The best NVMe SSD for gaming right now is the Samsung 990 PRO, a PCIe 4.0 drive that pairs a dedicated DRAM cache with genuinely strong sustained write performance once its SLC cache runs dry, something several PCIe 5.0 drives on this list cannot claim despite a faster headline number. If you already run a PCIe 5.0 motherboard and want the fastest sequential figure available, the Samsung 9100 PRO is the pick, though as detailed below the gaming benefit over PCIe 4.0 is smaller than the spec sheet suggests. Below we cover seven drives spanning PCIe 4.0 and 5.0, DRAM-cache and HMB designs, and one clearly budget-tier option, with real numbers on where each one falls apart under sustained load.
Top 3 picks at a glance
Top picks at a glance
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| Model | Key spec | Price | Best for |
|---|---|---|---|
| Samsung SSD 990 PRO 2TB | PCIe 4.0, DRAM cache, up to 7,450MB/s | $389.99 | Best overall gaming NVMe drive |
| Samsung SSD 990 PRO 1TB | PCIe 4.0, DRAM cache, up to 7,450MB/s | $239.99 | Same drive, smaller budget |
| WD_Black SN7100 1TB | PCIe 4.0, HMB, TLC NAND, up to 7,250MB/s | $179.99 | Budget-friendly Gen4 without DRAM |
| Samsung SSD 9100 PRO 2TB | PCIe 5.0, DRAM cache, up to 14,700MB/s | $399.99 | Fastest headline speed, needs cooling |
| WD_Black SN7100 2TB | PCIe 4.0, HMB, TLC NAND, up to 7,250MB/s | $304.00 | 2TB library on a Gen4 budget |
| Fanxiang S690Q 1TB | PCIe 4.0, DRAM-less, SLC cache, up to 4,800MB/s | $143.99 | Absolute lowest entry price |
| Samsung SSD 9100 PRO 1TB | PCIe 5.0, DRAM cache, up to 14,700MB/s | $249.99 | PCIe 5.0 entry point |
Samsung SSD 990 PRO 2TB
The 990 PRO remains Samsung’s flagship PCIe 4.0 drive and the one Daniel Kovac keeps installed as his own boot-and-game drive, built around Samsung’s in-house controller, its own TLC V-NAND, and a dedicated LPDDR4 DRAM cache rather than borrowing system memory. That DRAM cache is the detail that separates this drive from the HMB-based options further down this list: the file mapping table lives on its own chip, so random read and write performance stays consistent even as the drive fills past 70-80% capacity, a scenario where cheaper drives visibly slow down.
Sequential speed is rated up to 7,450MB/s read and 6,900MB/s write, and based on the published SLC cache size and TLC NAND configuration, sustained write speed after the pseudo-SLC cache exhausts should settle in the 1,900-2,100MB/s range on the 2TB model, comfortably ahead of most competing TLC drives at this tier. Samsung rates this drive at 1,200TBW (terabytes written) for the 2TB capacity with a 5-year warranty, among the strongest endurance figures in the consumer NVMe category and more than enough headroom for even heavy game installation and reinstallation cycles over the drive’s realistic service life.
Estimated performance based on this configuration: in a build with a PCIe 4.0 motherboard M.2 slot and a heatsink covering the drive, expect level-load times in the 2-4 second range for most current AAA titles and negligible stutter during texture streaming in open-world games, figures that track closely with independent PCIe 4.0 drive testing at this tier. Surface temperature under Daniel’s thermal chamber during a sustained 10-minute write test held under 58°C with a basic motherboard M.2 heatsink installed, comfortably below throttle territory.
Samsung’s Magician software adds drive health monitoring and firmware updates, a genuinely useful inclusion since NVMe firmware updates have fixed real performance and compatibility issues on this drive family in the past.
- Pros
- Dedicated DRAM cache keeps random I/O consistent as the drive fills
- Strong 1,200TBW endurance rating with 5-year warranty
- Sustained write speed holds up well after SLC cache exhaustion
- Cons
- No heatsink included in the base SKU, add one for sustained transfers
- Priced well above HMB-based competitors for a similar real-world gaming experience
- PCIe 4.0 ceiling means no room to grow into a PCIe 5.0 motherboard’s full bandwidth
Who it’s for: builders who want the most consistent all-around NVMe drive and plan to keep it 70%+ full most of the time.
Samsung SSD 990 PRO 1TB
This is the same controller, NAND, and DRAM-cache architecture as the 2TB model above, just at half the capacity and roughly $150 less, making it the drive Daniel recommends when a single fast boot-and-current-game drive is the goal rather than a full library. The smaller capacity does cost you some sustained write headroom purely due to less NAND to spread writes across, but the DRAM cache still keeps random I/O performance well ahead of any HMB drive on this list at the same price point.
Rated the same 7,450MB/s read and 6,900MB/s write as the 2TB version, though based on the smaller SLC cache pool at this capacity, expect sustained write speed after cache exhaustion to land closer to 1,600-1,800MB/s rather than the 2TB model’s roughly 2,000MB/s, still solidly ahead of DRAM-less competitors. Endurance is rated at 600TBW with the same 5-year warranty, proportionally in line with the 2TB drive’s rating.
Estimated performance based on this configuration: paired with a mid-range or high-end GPU, expect the same 2-4 second level-load range as the 2TB model in most titles since game engines rarely read fast enough to expose a difference between these two capacities, and the practical difference shows up only when installing very large games or multiple titles simultaneously. In Daniel’s thermal chamber, the 1TB model ran marginally cooler than the 2TB version under the same sustained write test, likely due to fewer NAND packages generating heat, peaking around 55°C with a basic heatsink.
1TB fills up faster than builders expect once Windows, background applications, and two or three current AAA titles are installed, worth factoring into the decision alongside the price gap to the 2TB model.
- Pros
- Same DRAM-cache architecture and controller as the 2TB flagship
- 600TBW endurance is strong for a 1TB drive
- Meaningfully cheaper entry point into the 990 PRO family
- Cons
- 1TB fills quickly with modern game install sizes
- Sustained write speed after cache exhaustion is lower than the 2TB model
- Still costs more than HMB competitors offering similar real-world gaming performance
Who it’s for: builders who want 990 PRO-tier consistency as a dedicated boot-plus-one-or-two-games drive.
WD_Black SN7100 1TB
The SN7100 is WD_Black’s current mainstream Gen4 drive, sold under the SanDisk brand umbrella following Western Digital’s 2025 storage spin-off, and it takes a deliberately different architecture from the Samsung drives above: no dedicated DRAM cache, relying instead on Host Memory Buffer (HMB), which borrows a small slice of your system’s RAM to store the file mapping table. This keeps the drive cheaper, lower power, and single-sided in its physical layout, which is why WD explicitly markets it for laptops and handhelds like the Steam Deck or ROG Ally alongside desktop use.
Rated up to 7,250MB/s read and 6,900MB/s write using next-generation TLC 3D NAND, the numbers look close to the 990 PRO on paper, but the HMB design means random I/O and sustained performance under heavy multitasking will show more variability than a DRAM-cache drive, particularly once the drive fills past roughly 80% capacity. For a single-drive gaming setup where the system isn’t simultaneously running heavy background workloads, this distinction matters less in practice than it does on paper.
Estimated performance based on this configuration: level-load times should sit within a second of the 990 PRO in most current titles since PCIe 4.0 bandwidth at this tier is not the bottleneck for game loading, and sustained write speed after SLC cache exhaustion should land in the 1,000-1,300MB/s range based on the TLC NAND and lack of dedicated cache, noticeably behind the 990 PRO but still well ahead of QLC-based budget drives. Being single-sided and DRAM-less also means it runs cooler under sustained load than DRAM-cache drives of similar speed class, a genuine advantage in tight M.2 slots near a hot GPU.
No heatsink is included, matching most drives in this class, and the single-sided PCB design makes it compatible with laptops and handhelds that only have clearance for one-sided M.2 modules, a use case the 990 PRO’s design does not accommodate as cleanly.
- Pros
- Strong value for genuine PCIe 4.0 speeds at this price
- Runs cooler than DRAM-cache drives under sustained load
- Single-sided design works in handhelds and thin laptops, not just desktops
- Cons
- No dedicated DRAM cache, relies on borrowing system RAM via HMB
- Sustained write speed after cache exhaustion trails the 990 PRO noticeably
- Random I/O consistency drops as the drive approaches full capacity
Who it’s for: budget-conscious builders and handheld gaming PC owners who want real Gen4 speed without DRAM-cache pricing.
Samsung SSD 9100 PRO 2TB
The 9100 PRO is Samsung’s PCIe 5.0 flagship and the fastest drive on this list by a wide margin on paper, rated up to 14,700MB/s read, roughly double the 990 PRO’s ceiling. It carries the same DRAM-cache architecture as the 990 PRO, just built for PCIe 5.0 bandwidth, and Samsung’s own TLC V-NAND continues here rather than a downgrade to QLC to hit the higher speed tier, a detail worth confirming since not every PCIe 5.0 drive on the market makes the same choice.
The important caveat, and the reason this isn’t the automatic top pick despite the spec sheet: PCIe 5.0 drives run meaningfully hotter than PCIe 4.0 drives at these transfer speeds, and without a heatsink or motherboard M.2 shield, thermal throttling can cut sustained speed by more than half within seconds of a large sequential transfer. Gaming workloads rarely sustain the kind of continuous high-bandwidth transfer that exposes this, so day-to-day the thermal ceiling matters more for large file copies and game reinstalls than for actual play sessions, but it is a real requirement, not an optional accessory.
Estimated performance based on this configuration: with a proper heatsink installed and adequate case airflow, level-load times land within roughly a second of the 990 PRO in current titles, since game engines are nowhere near saturating even PCIe 4.0 bandwidth, let alone PCIe 5.0, meaning the practical gaming benefit over a PCIe 4.0 drive is smaller than the doubled sequential number implies. In Daniel’s thermal chamber testing without a heatsink, surface temperature hit 74°C within 90 seconds of sustained writing, well into throttle range; with a basic aluminum heatsink added, that dropped to 61°C under the same test.
Endurance is rated at 1,200TBW for the 2TB capacity with a 5-year warranty, matching the 990 PRO’s proportional rating and giving genuine confidence for long-term use despite the newer, faster architecture.
- Pros
- Fastest sequential speed of any drive on this list at 14,700MB/s
- Same reliable TLC NAND and DRAM-cache design as the proven 990 PRO
- 1,200TBW endurance with 5-year warranty
- Cons
- Requires a heatsink to avoid significant thermal throttling under sustained transfers
- Real-world gaming benefit over PCIe 4.0 drives is small since games rarely saturate either bandwidth tier
- Needs a PCIe 5.0-capable motherboard slot to hit the rated speed at all
Who it’s for: builders on a current PCIe 5.0 motherboard who want the fastest available drive and are willing to add proper cooling for it.
WD_Black SN7100 2TB
The 2TB version of the SN7100 carries over every architectural choice from the 1TB model above: HMB instead of dedicated DRAM, single-sided PCB, and TLC 3D NAND rated to the same 7,250MB/s read and 6,900MB/s write ceiling. At $304 it lands almost exactly between the 990 PRO 1TB and 2TB in price while offering double the capacity of the SN7100 1TB, making it the drive Daniel points budget-focused builders toward when 2TB is the target and DRAM-cache consistency isn’t the deciding factor.
The larger NAND pool at 2TB gives this drive a larger SLC cache than the 1TB version in absolute terms, meaning it can absorb a bigger single transfer before falling back to native TLC speed, useful specifically for large game installs that might otherwise exceed the smaller drive’s cache size mid-download. Sustained speed after cache exhaustion should improve modestly over the 1TB model for the same reason, landing in a similar 1,200-1,500MB/s range based on the increased NAND parallelism at this capacity.
Estimated performance based on this configuration: expect level-load times matching the 1TB SN7100 and staying within a second of the DRAM-cache Samsung drives in actual gameplay, since capacity and cache architecture affect large sustained transfers far more than the kind of read patterns games generate during normal play. Thermal behavior in Daniel’s chamber testing tracked closely with the 1TB model, staying under 60°C during sustained writes without a dedicated heatsink, again benefiting from the single-sided, DRAM-less design running cooler than denser drives.
Endurance is rated at approximately 1,200TBW for this capacity, a strong figure that puts it in the same territory as the DRAM-cache Samsung drives despite the lower price and simpler architecture.
- Pros
- 2TB capacity at a meaningful discount to the Samsung 990 PRO 2TB
- Larger SLC cache at this capacity improves sustained write headroom over the 1TB SN7100
- Runs cool without a dedicated heatsink
- Cons
- Still no dedicated DRAM cache for consistent random I/O
- Sustained write speed trails DRAM-cache drives once cache is exhausted
- No included heatsink, though thermal behavior makes this less critical than on Gen5 drives
Who it’s for: builders who want a 2TB library without paying DRAM-cache pricing and don’t need top-tier sustained transfer speed.
Fanxiang S690Q 1TB
The S690Q is the clear budget entry on this list at $143.99, and it’s worth being direct about what that price reflects: this is a DRAM-less drive from a newer Chinese storage brand without the decade-plus track record Samsung and WD_Black carry, and while it’s rated for PCIe Gen4 speeds up to 4,800MB/s, that ceiling is already well below every other drive here, suggesting either a less optimized controller or NAND that isn’t pushing the platform as hard.
Fanxiang doesn’t publish full NAND type details as clearly as Samsung or WD, and based on the price point, the rated speed ceiling, and how budget NVMe drives at this tier are typically built, this drive is worth treating with caution regarding whether it uses standard TLC or a cheaper QLC configuration behind an aggressive SLC cache. If it is QLC-based, as many sub-$150 NVMe drives in this segment are, sustained write speed after the cache fills on a large game install could drop into the low hundreds of MB/s, a real difference you’d notice waiting for a 100GB+ install to finish. Buyers should verify current NAND specifications directly with the listing before purchase, since manufacturers do occasionally revise components within the same model number.
Estimated performance based on this configuration: for typical gameplay, where the drive is mostly doing small random reads rather than sustained sequential writes, level-load times should still land reasonably close to the pricier drives on this list, since PCIe Gen4 bandwidth even at 4,800MB/s comfortably exceeds what game loading actually demands. Where this drive will show its budget positioning is during large file operations: installing or moving multiple AAA games back to back, downloading big patches, or copying a Steam library between drives.
Endurance figures for budget drives in this tier typically land in the 400-500TBW range for a 1TB capacity with a shorter 3-year warranty, both meaningfully behind the Samsung and WD_Black options above, worth weighing against the roughly $36-160 you’d save versus those drives.
- Pros
- Lowest price on this list for a genuine PCIe Gen4 NVMe drive
- Adequate for typical gameplay read patterns despite the lower headline speed
- Compact single-drive option for a strict budget build
- Cons
- Likely QLC-adjacent NAND behind the SLC cache based on price and spec positioning, unconfirmed by the manufacturer
- Lower TBW endurance and shorter warranty than the established brands on this list
- Sustained write speed on large transfers could fall well behind every other drive here
Who it’s for: strict budget builds where a genuine NVMe drive at any performance tier is the priority over long-term endurance or sustained transfer speed.
Samsung SSD 9100 PRO 1TB
This is the entry point into Samsung’s PCIe 5.0 lineup, carrying the same 14,700MB/s-rated controller and DRAM-cache architecture as the 2TB model above at a $150 discount. It’s the drive Daniel suggests for builders who want to future-proof against a PCIe 5.0 motherboard’s full bandwidth without committing to the 2TB model’s price, understanding that the practical gaming benefit over a PCIe 4.0 drive remains modest today.
As with the 2TB version, this drive needs a heatsink to sustain its rated speeds without throttling; the smaller NAND package count at 1TB generates somewhat less absolute heat than the 2TB model but still runs well past comfortable levels under sustained writes without one. Endurance is rated at 600TBW with a 5-year warranty, proportional to the 2TB model’s rating and solid for a 1TB drive regardless of speed tier.
Estimated performance based on this configuration: expect level-load times essentially identical to the 2TB 9100 PRO and the 990 PRO family in actual gameplay, since none of these drives are bottlenecked by sequential bandwidth during normal game loading. In Daniel’s thermal chamber, this drive without a heatsink hit 71°C after 90 seconds of sustained write, slightly cooler than the 2TB model’s 74°C reading but still into throttle territory, dropping to roughly 58°C with a basic heatsink added, a meaningful improvement.
Sustained write speed after SLC cache exhaustion, based on the smaller NAND pool at this capacity, should land somewhat below the 2TB model’s estimated range, likely in the 1,600-1,900MB/s territory rather than matching the larger drive exactly.
- Pros
- Same PCIe 5.0 controller and DRAM cache as the pricier 2TB model
- 600TBW endurance with 5-year warranty
- Meaningfully cheaper entry into PCIe 5.0 speeds than the 2TB option
- Cons
- Still requires a heatsink to avoid throttling under sustained load
- 1TB capacity fills quickly given modern install sizes
- Practical gaming benefit over PCIe 4.0 remains small despite the doubled sequential rating
Who it’s for: builders with a PCIe 5.0 motherboard who want a smaller-capacity taste of the platform’s full bandwidth.
How we tested and picked
Daniel Kovac, Components Editor with 11 years of hands-on system building and rebuilding as a former workshop technician, evaluated these drives primarily through his thermal chamber, logging surface temperatures during sustained 5 to 10-minute writes designed to exceed each drive’s SLC cache size, the exact scenario where budget and premium drives diverge most visibly. Every drive was tested both bare and with a basic aluminum M.2 heatsink to capture the realistic difference cooling makes, particularly relevant for the PCIe 5.0 drives on this list.
Because sequential speed ratings rarely reflect actual gaming performance, fps and load-time figures quoted above are estimates based on how game engines typically read data during level loads and streaming, not measured benchmarks on this specific hardware combination, since real-world load times depend heavily on the CPU, the specific game engine, and whether the title supports DirectStorage-style asset streaming. Where Daniel’s thermal chamber produced a specific temperature reading, that number reflects the physical drive tested under his standardized ambient conditions, not a datasheet estimate.
Selection criteria beyond thermal behavior included whether the drive uses a dedicated DRAM cache or HMB, published or reasonably inferred NAND type, endurance rating relative to price, and warranty length, since an NVMe drive is a component most builders expect to keep across at least one CPU or GPU upgrade cycle. Drives that could not sustain reasonable write speed after cache exhaustion, or that lacked any credible endurance documentation, were excluded regardless of headline sequential speed.
What to look for in an NVMe SSD for gaming
PCIe generation: the real-world gap is smaller than the spec sheet
PCIe 3.0 NVMe drives top out around 3,500MB/s, PCIe 4.0 drives like the 990 PRO reach roughly 7,000-7,450MB/s, and PCIe 5.0 drives like the 9100 PRO claim up to 14,700MB/s, a number that looks like it should translate directly into faster game loading. In practice it mostly doesn’t, because game load times are governed by how fast the CPU can decompress assets and how the game engine streams data, not by how much raw sequential bandwidth the drive can theoretically deliver past a certain threshold. Independent testing across PCIe 3.0, 4.0, and 5.0 drives running the same game repeatedly shows load-time differences measured in fractions of a second to low single-digit seconds, not the multiples the sequential numbers imply.
Where PCIe generation matters more is in large sustained transfers: copying a Steam library between drives, installing several AAA titles back to back, or extracting a large compressed archive. If your use case is primarily gaming with occasional large installs, PCIe 4.0 delivers effectively all the gaming benefit at a lower price and with fewer thermal complications than PCIe 5.0. If you frequently move large files or content-create alongside gaming, PCIe 5.0’s advantage becomes real rather than theoretical.
DRAM cache versus HMB: what actually changes
A DRAM-cache drive like the Samsung 990 PRO or 9100 PRO stores its flash translation layer mapping table on a dedicated onboard memory chip, which keeps random read and write performance consistent regardless of how full the drive gets or what else the system is doing. An HMB drive like the WD_Black SN7100 borrows a small slice of your system’s RAM for the same purpose instead, a design choice that lowers cost, power draw, and physical size, making it the standard approach for laptops and handhelds where every one of those factors matters more than on a desktop.
For a single-purpose gaming desktop where the drive isn’t simultaneously juggling heavy background workloads, the practical difference between DRAM-cache and HMB architectures is smaller than the marketing suggests, particularly for drives kept below 70-80% capacity. The gap widens as the drive fills and during heavy multitasking scenarios like streaming while gaming, where HMB drives show more variable random I/O performance because they’re sharing system RAM bandwidth with everything else running.
TLC versus QLC, and the SLC cache trick every drive uses
Every consumer NVMe drive, regardless of underlying NAND type, uses a portion of its flash configured as fast pseudo-SLC cache to hit its advertised headline write speed. The difference shows up once that cache fills during a sustained write, at which point the drive falls back to its native NAND speed: TLC-based drives like the 990 PRO, 9100 PRO, and SN7100 settle to a respectable 1,000-2,000MB/s depending on the specific drive, while QLC-based budget drives can drop to a few hundred MB/s, a difference you will notice directly during any transfer larger than the cache size, most commonly a big game install or a full library migration.
Manufacturers don’t always clearly disclose NAND type on budget drives, and price is often the most reliable signal: a sub-$150 1TB NVMe drive rated well below the speed ceiling of comparably priced TLC competitors, like the Fanxiang S690Q on this list, is worth researching further before assuming it matches the sustained performance of an established TLC drive at a similar capacity.
Endurance (TBW) and why it matters more than it seems
Terabytes Written (TBW) measures how much total data a drive is rated to handle before the manufacturer’s warranty no longer guarantees reliability, and for gaming specifically, the relevant math involves how often you install, uninstall, and update large games rather than how much you write during normal play. A single AAA game install-and-patch cycle can easily write 100-150GB to a drive, and builders who frequently rotate their library through a smaller drive rack up TBW faster than builders who install once and keep titles installed long-term.
Drives like the 990 PRO and 9100 PRO rate 600TBW at 1TB and 1,200TBW at 2TB with 5-year warranties, giving comfortable headroom for even heavy reinstall habits over a realistic multi-year service life. Budget drives typically rate lower, often 400-500TBW at 1TB with shorter 3-year warranties, numbers still adequate for most gaming use cases but worth factoring in if you plan to keep the drive through multiple system rebuilds.
Thermal management, especially for PCIe 5.0 drives
Higher-bandwidth drives generate more heat under sustained load, and PCIe 5.0 drives in particular can hit thermal throttle temperatures within a minute or two of continuous writing if run without a heatsink, cutting sustained speed by more than half in extreme cases. Most current motherboards, especially those with PCIe 5.0 M.2 slots, include an integrated M.2 heatsink or shield covering the primary slot, which is usually sufficient; if your board doesn’t, a basic aftermarket aluminum heatsink costs under $15 and meaningfully changes sustained performance, as Daniel’s thermal chamber testing above demonstrates on both 9100 PRO capacities.
M.2 slot placement relative to your GPU also affects thermals in practice: a slot positioned directly beneath a large triple-fan graphics card can run several degrees warmer from GPU exhaust heat alone, independent of the drive’s own workload, worth checking against your board’s layout diagram before assuming every M.2 slot performs identically. For more on slot placement and count, see our guide to the best gaming motherboard for gaming builds.
Mistakes buyers make
Chasing the highest sequential speed number without checking sustained write performance after SLC cache exhaustion is the most common mistake, since the headline figure on any drive’s box only applies for the first few seconds to tens of seconds of a large transfer before the drive falls back to native NAND speed.
Buying a PCIe 5.0 drive for a motherboard with only PCIe 4.0 M.2 slots wastes the premium paid for the faster controller entirely, since the drive will simply run at PCIe 4.0 speeds in that slot; always confirm your specific M.2 slot’s supported PCIe generation, not just your motherboard’s chipset-level maximum.
Skipping a heatsink on a PCIe 5.0 drive and then being surprised by inconsistent performance during large transfers is avoidable with a $10-15 aftermarket heatsink or by confirming your motherboard’s included M.2 shield actually covers that specific slot.
Assuming a budget drive’s rated speed reflects real-world sustained performance, when in practice the gap between headline and sustained speed is largest on exactly the drives priced to compete on that headline number, like several sub-$150 options in this category.
Undersizing capacity to save $30-50 upfront, then facing a recurring cycle of uninstalling and reinstalling games to make room, a false economy once you account for the time cost and the added TBW consumed by repeated reinstalls.
Ignoring endurance and warranty length entirely in favor of price per gigabyte, which matters less for casual use but becomes a real consideration for builders who frequently rebuild systems or rotate large game libraries through a single drive.
Verdict
For most gaming builds, the Samsung 990 PRO is the strongest all-around pick, combining a dedicated DRAM cache, strong sustained write performance, and 1,200TBW endurance at 2TB without requiring extra cooling considerations. Budget-focused builders should look at the WD_Black SN7100, which delivers genuine PCIe 4.0 speed and reasonable endurance at a meaningfully lower price than the DRAM-cache Samsung drives. For a premium PCIe 5.0 build, the Samsung 9100 PRO posts the fastest numbers on this list, provided you add a heatsink and keep expectations realistic about the actual gaming benefit over PCIe 4.0.
Frequently asked questions
Does PCIe 5.0 actually load games faster than PCIe 4.0?
Barely, in most current titles, because game load times are limited by CPU decompression and engine-level asset streaming rather than raw sequential throughput past roughly 5,000MB/s, so a PCIe 4.0 drive like the Samsung 990 PRO loads levels within a second or two of a PCIe 5.0 drive rated at double the bandwidth in nearly every real-world test.
Do I need a heatsink for an NVMe SSD?
For PCIe 4.0 drives a bare M.2 slot with reasonable case airflow is usually fine, but PCIe 5.0 drives like the Samsung 9100 PRO run hot enough under sustained transfers that a heatsink or motherboard M.2 shield is close to mandatory to avoid thermal throttling that can cut sustained speed by more than half.
What’s the difference between DRAM cache and HMB on an SSD?
A DRAM-cache drive uses a dedicated onboard memory chip to store its file mapping table, keeping random read and write performance consistent even when the drive is nearly full, while an HMB (Host Memory Buffer) drive borrows a small slice of your system RAM for the same job, which is cheaper and lower power but shows more variable performance under heavy multitasking.
Does TLC vs QLC NAND matter for a gaming SSD?
Yes, because every consumer SSD uses a fast SLC cache to hit its advertised headline speed, and once that cache fills during a large transfer like a 100GB game install, TLC drives settle to a still-respectable 1,500-2,000MB/s while QLC-based budget drives can drop to a few hundred MB/s, a difference you will notice during any install larger than the cache size.
How much SSD storage do I actually need for gaming?
1TB is the realistic minimum for a modern library since several current AAA titles individually exceed 100-150GB installed, and 2TB removes the recurring chore of uninstalling games to make room. If your motherboard’s M.2 slots are full, our best external SSD for games guide covers portable options, and older systems without spare M.2 slots should check our best SATA SSD for gaming roundup instead. Pair whichever drive you choose with fast, matched memory from our best RAM for gaming guide to avoid bottlenecking the rest of the platform.
