Key takeaways
- DRAM cache. Higher-end drives like the 990 Pro use onboard DRAM, while efficient DRAM-less designs such as the SN7100 use host memory buffer. For gaming the difference is small, but DRAM-less drives can slow when heavily filled.
- NAND type. TLC generally holds speed better than QLC. The Crucial P3 Plus uses QLC and is slower, though cheap per terabyte.
- Endurance and warranty. Look at terabytes-written ratings and the warranty period. The SN7100 carries five years per Tom’s Hardware.
- Power draw. A lower-power drive, such as the Crucial T500 in one comparison, can run cooler in a compact case or laptop.
- Software. Makers provide dashboards for firmware updates and health monitoring, which are worth installing.
For most gaming PCs, a 2TB PCIe 4.0 NVMe drive such as the Samsung 990 Pro, WD Black SN7100 or WD Black SN850X is the sensible pick, a budget buyer can look at the Crucial P310 or Kingston NV3 class, and a PCIe 5.0 drive like the Samsung 9100 Pro or WD Black SN8100 only makes sense if you also edit video, move huge files or simply want the fastest option your motherboard supports. Reviewers broadly agree that game load times are close to identical between PCIe 4.0 and 5.0, so the extra speed mostly shows up in benchmarks. All figures below are the makers’ stated numbers or outlets’ reports.
Gaming NVMe SSDs at a glance
| Drive | Interface | Best for | Stated specs | Limits |
|---|---|---|---|---|
| Samsung 990 Pro | PCIe 4.0 | Best overall gaming drive per Tom’s Hardware | Up to 7,450 MB/s read, 6,900 MB/s write | Runs warm under sustained load, heatsink version or motherboard heatsink advised |
| WD Black SN7100 | PCIe 4.0 | Efficient all-rounder, handhelds and PCs | 1TB and 2TB up to 7,250 MB/s read and 6,900 MB/s write, 4TB up to 7,000 and 6,700, five-year warranty | Listed as DRAM-less with host memory buffer by Tom’s Hardware, one review disagrees |
| WD Black SN850X | PCIe 4.0 | Gaming and console storage upgrades | Up to 7,300 MB/s read, 6,600 MB/s write | Being succeeded by newer models in some lists |
| Crucial T500 | PCIe 4.0 | Cooler running, value | One comparison reports average draw of about 4.2 W against 5.5 W for the 990 Pro | Comparison sources are blogs, not lab tests |
| Crucial P310 / Kingston NV3 | PCIe 4.0 | Budget | Cited as budget choices in roundups | Lower sustained speeds, fewer extras |
| Crucial P3 Plus | PCIe 4.0 | Large library, tight budget | QLC NAND as reported | Slower, especially when writing a lot |
| Samsung 9100 Pro | PCIe 5.0 | Flagship speed, creators | Up to 14,800 MB/s read | Draws more power and runs hotter than the 990 Pro, higher cost |
| WD Black SN8100 | PCIe 5.0 | Best PCIe 5.0 for gaming per PC Gamer | Gen 5 class speeds | Needs good cooling |
| Crucial T705 | PCIe 5.0 | Heavy file work | Reported as first to pass 14,000 MB/s | Overkill for most games |
| Lexar NM1090 Pro / Crucial P510 | PCIe 5.0 | Budget Gen 5 | Called best budget high-end options by Tom’s Hardware and PC Gamer | Still need heat management |
PCIe 4.0 or PCIe 5.0: what matters for games
PCIe 5.0 drives post much higher sequential figures, with the Samsung 9100 Pro rated up to 14,800 MB/s read, nearly double the 990 Pro’s 7,450 MB/s. In games, however, load times depend on CPU decompression, asset streaming and engine design as much as on the drive. One review puts real game load times between the two generations as essentially identical, and a comparison article notes that DirectStorage titles do not yet saturate PCIe 4.0 bandwidth.
That is not to say PCIe 5.0 is useless. StorageReview reports the 9100 Pro reaching about 23.77 GB/s in a GDeflate DirectStorage test, well above the 990 Pro and the SN850X. If you also render video, move raw footage or install many large games at once, that headroom can matter. But for a pure gaming rig, the extra cost per terabyte and extra heat are often better spent on a bigger drive, a faster graphics card or more memory.
Capacity, cost and the 2TB sweet spot
Modern game installs are huge, so capacity matters more than raw speed. A 1TB drive fills quickly once you add the operating system, a few big titles and updates. Reviewers repeatedly point to 2TB as the practical minimum for a primary gaming drive. A common approach from PC Gamer is to pair a fast boot drive with a larger, slower PCIe 4.0 or budget drive for the game library. That avoids paying a premium for storage that will mostly hold files you only play occasionally.
Capacity also affects stated performance. Western Digital lists the SN7100 at 6,800 MB/s read and 5,800 MB/s write for the 500GB model, but 7,250 and 6,900 for 1TB and 2TB, and 7,000 and 6,700 for 4TB. Small drives often have lower write speeds and lower endurance ratings, such as the 300TB written rating Tom’s Hardware lists for the 500GB SN7100 compared with 1,200TB for the 2TB version.
Features that affect real use
- DRAM cache. Higher-end drives like the 990 Pro use onboard DRAM, while efficient DRAM-less designs such as the SN7100 use host memory buffer. For gaming the difference is small, but DRAM-less drives can slow when heavily filled.
- NAND type. TLC generally holds speed better than QLC. The Crucial P3 Plus uses QLC and is slower, though cheap per terabyte.
- Endurance and warranty. Look at terabytes-written ratings and the warranty period. The SN7100 carries five years per Tom’s Hardware.
- Power draw. A lower-power drive, such as the Crucial T500 in one comparison, can run cooler in a compact case or laptop.
- Software. Makers provide dashboards for firmware updates and health monitoring, which are worth installing.
Heat and compatibility
NVMe drives throttle when they overheat. One review of the 990 Pro says it can reach about 75 degrees Celsius without a heatsink in an enclosed case and suggests a heatsink version or a motherboard heatsink. PCIe 5.0 drives run hotter and need larger coolers. PCGamesN reports that the heatsink version of the 9100 Pro stays in check without throttling.
Before you buy, confirm that your motherboard has a free M.2 2280 slot and which generation it supports. A PCIe 5.0 drive in a PCIe 4.0 slot will still work but at the slot’s lower speed. Some boards share bandwidth between M.2 slots and SATA ports, so consult the board manual. Heatsink height also matters if you have a graphics card sitting close to the slot.
For PlayStation 5 storage expansion, the SN850X is cited by retail-oriented outlets as widely compatible, but the console has its own heat and size requirements, so follow Sony’s published guidance for M.2 upgrades.
Protecting your data
A fast drive is still a single point of failure. SSDs can fail suddenly, and unlike hard drives they often give little warning, so keep important saves, photos and documents backed up somewhere else. Many games sync saves to a cloud account, but mods, custom settings and personal files usually do not. An external drive or a second internal drive that holds copies of your key folders costs little compared with the time lost rebuilding a system.
Keep drive firmware current through the maker’s utility, leave some free space on the drive so it can manage wear and speed, and avoid filling it to the last gigabyte. If a drive stops appearing in the operating system, shut the PC down and avoid repeated attempts to write to it, since further activity can make recovery harder. At that point a professional recovery service is the safer route.
Budget tiers
Budget: Crucial P310, Kingston NV3 or Biwin Black Opal NV7400 offer PCIe 4.0 performance good enough for games. Mid-range: Samsung 990 Pro, WD Black SN7100, WD Black SN850X and Crucial T500 give you the best balance of speed, endurance and features. Premium: Samsung 9100 Pro, WD Black SN8100 and Crucial T705 are the PCIe 5.0 choices for creators who want the fastest drives.
Pick X if you …
| If you … | Pick | Why |
|---|---|---|
| Want a safe default for a gaming PC | Samsung 990 Pro, 2TB | Top overall pick at Tom’s Hardware |
| Care about efficiency and heat | WD Black SN7100 or Crucial T500 | Lower power draw reported |
| Upgrade a console or want a gaming-labelled drive | WD Black SN850X | Wide compatibility reported |
| Need lots of space cheaply | Crucial P310, Kingston NV3 or P3 Plus | Lower cost per terabyte |
| Edit video and game | Samsung 9100 Pro or WD Black SN8100 | PCIe 5.0 headroom |
| Want Gen 5 on a budget | Lexar NM1090 Pro or Crucial P510 | Cheaper high-end options |
Alternatives
- SATA SSDs. Slower but fine for bulk game storage when M.2 slots run out.
- External NVMe enclosures. Add portable storage for games, with USB speed limiting performance.
- Hard drives. Cheapest per terabyte, but games load slower and some titles expect an SSD.
- Last-generation drives. Previous-generation PCIe 4.0 models are often reduced when newer versions arrive.
Frequently Asked Questions
Is PCIe 5.0 worth it for gaming?
Reviewers say it is not needed for most players. Load times are close to PCIe 4.0 in everyday play, and Gen 5 drives cost more and run hotter. It makes more sense for content creation.
How much storage do I need?
2TB is a comfortable starting point for a gaming PC. Add a second drive if you keep many large games installed.
Do I need a heatsink?
Many motherboards include M.2 heatsinks. Use them or a heatsink version of the drive, especially for 990 Pro and PCIe 5.0 models.
Will a PCIe 4.0 drive work in a PCIe 3.0 slot?
Yes, it will run at the slower slot speed. Check the board manual for slot details.
Does DRAM-less matter?
For gaming, usually not much. Heavy sustained writes and nearly full drives can expose differences.
Are QLC drives fine for games?
They can be, for read-heavy game libraries, but sustained writes are slower than TLC drives.

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