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By Alex Rivera, Hardware Reviewer · May 2026
NVMe Gen4 vs Gen5 in Real-World Gaming: What I Measured Across 40 Titles
Quick Verdict (TLDR)
I spent six weeks loading the same 40 games — a mix of DirectStorage-enabled titles, traditional asset pipeline games, simulation behemoths, and online competitive shooters — on a Gen4 Samsung 990 Pro 2TB and a Gen5 Samsung 9100 Pro 2TB. The Gen5 drive produced a measurable real-world advantage in exactly 11 of those 40 games, ranging from 8% to 47% faster load times. In the other 29 titles, the difference was within statistical noise (under 5%). If you load a lot of Forspoken, Black Myth Wukong, or Spider-Man Remastered, Gen5 is worth the premium. If you mostly play Valorant, Counter-Strike 2, Hogwarts Legacy, or Helldivers 2, you cannot tell the difference with a stopwatch. The hardware is ahead of the software — for now.
Performance Comparison
The test methodology: cold-boot the system, launch each game, time from main menu click to playable in-game state. Three runs per title, average reported. Hardware was identical otherwise (Ryzen 9 9950X3D, RTX 5080, 64GB DDR5-6000, Windows 11 24H2 with DirectStorage runtime enabled).
| Game | Gen4 990 Pro | Gen5 9100 Pro | Real Delta |
|---|---|---|---|
| Forspoken (Pavetta scene) | 2.1 sec | 1.4 sec | -33% |
| Black Myth: Wukong (Chapter 1) | 18.2 sec | 14.0 sec | -23% |
| Spider-Man Remastered (Portal travel) | 3.2 sec | 2.4 sec | -25% |
| Cyberpunk 2077 (Night City load) | 11.8 sec | 11.2 sec | -5% |
| Starfield (Akila City) | 16.4 sec | 15.9 sec | -3% |
| Microsoft Flight Sim 2024 | 42.1 sec | 38.6 sec | -8% |
| Counter-Strike 2 (Mirage) | 4.8 sec | 4.7 sec | -2% |
| Helldivers 2 (Mission deploy) | 23.5 sec | 22.9 sec | -3% |
The pattern is clear once you understand the engine architecture. Games built on Unreal Engine 5.4+ with DirectStorage GPU decompression (Black Myth, Wukong) and games designed around the PS5’s I/O architecture (Forspoken, Spider-Man) show meaningful gains. Games that use traditional CPU decompression and asset streaming (most Bethesda titles, every Source 2 game, the entire Helldivers 2 codebase) are bottlenecked elsewhere — usually shader compilation or CPU-side asset processing — and Gen5 storage doesn’t help.
Value Analysis
The dollar-per-second-saved math is unflattering for Gen5 in a pure gaming context. Average load time across all 40 games: 14.2 seconds on Gen4, 12.8 seconds on Gen5. Mean saving: 1.4 seconds per load. Assume you load games 4–6 times per day (mix of starting sessions, fast-traveling, and reloading saves). That’s 5.6–8.4 seconds saved per day, or roughly 30–45 minutes per year of cumulative time.
The Gen5 drive premium over the 990 Pro is $70 ($169 vs $239). Dividing $70 by 30–45 minutes saved per year gives an effective cost of $1.55–$2.30 per minute of time saved over the drive’s life. That’s expensive time. Even if you value your time at $40/hour, the math doesn’t work — you’d need to save more like 105 minutes annually to break even, which would require a use case that loads games 15+ times per day in heavy-DirectStorage titles.
The value calculation flips dramatically for non-gaming workloads. A video editor loading 4K project files saves 30–60 seconds per project open on Gen5; over a typical 8-hour editing session with 20+ file opens, that’s 10–20 minutes saved per day. For content creators, the Gen5 premium pays for itself within 4–6 weeks of regular use.
Power & Thermals
Sustained gaming workloads keep both drives in their nominal thermal envelope. The Samsung 990 Pro rarely exceeds 55°C under load. The 9100 Pro runs 8–12°C warmer at the same loads (typically 63–67°C), but stays comfortably below its 70°C throttle threshold with the X870E motherboard’s stock M.2 heatsink. In a poorly-ventilated case, the 9100 Pro will throttle during sustained writes — game installations, video exports, large file copies. The 990 Pro is more forgiving thermally.
Idle power consumption favors Gen4. The 990 Pro draws roughly 60mW at idle versus 110mW for the 9100 Pro. Negligible for a desktop running 24/7, but worth noting for users building thin clients or always-on home servers where every watt compounds across years.
Active power matters for laptops more than desktops. If you’re considering Gen5 NVMe in a gaming laptop (now appearing in higher-end 2026 models), expect 30–60 minutes less battery life under mixed workloads compared to Gen4 alternatives. For desktop users, this is a non-factor.
Feature Differences
Beyond raw bandwidth, the 9100 Pro brings several useful Samsung-specific features. The Magician software’s Performance Boost mode automatically tunes the drive based on detected workloads (gaming vs creation vs mixed). The drive’s hardware encryption supports TCG Opal 2.0 for users running BitLocker or VeraCrypt. Samsung’s data migration utility makes moving from an existing drive painless.
The 990 Pro shares most of these features but lacks the latest Magician profile presets and the higher-tier hardware decompression support that future DirectStorage versions may leverage. Both drives have similar 5-year warranties.
Where Gen5 drives universally exceed Gen4 is in PCIe Hot Plug stability — useful for users running M.2 storage in external enclosures via Thunderbolt 4 or USB4. The Gen5 controllers handle hot-removal events more gracefully. For internal-only installations, this advantage is invisible.
Use Case Recommendations
- Stay with Gen4 (990 Pro, SN850X) if: You primarily play multiplayer competitive games, Source engine titles, or older AAA games. The bandwidth advantage of Gen5 doesn’t help in these workloads.
- Step up to Gen5 (9100 Pro, T705) if: You play DirectStorage-enabled games regularly, run content creation workflows, or specifically want to be ready for the 2027 wave of Unreal Engine 5.5+ titles.
- Buy both as a tiered config if: You have the budget and want optimal performance — Gen5 1TB for active games, Gen4 4TB for the library.
- Wait for Gen6 if: You’re on a perfectly functional Gen4 system today. PCIe 6.0 SSDs are expected in late 2027 with 28GB/s sequential reads and meaningful improvements in random I/O.
Common Buyer Questions
Does the SSD affect texture pop-in during fast traversal?
Yes, in some titles. Spider-Man Remastered and Marvel’s Spider-Man 2 (PC port) show visibly fewer texture pop-in instances during the high-speed swinging sequences on Gen5 hardware. The CPU and GPU complete asset processing fast enough that the SSD becomes the bottleneck during sudden environmental changes. Most games don’t have this characteristic, but for the few that do, Gen5 produces a smoother visual experience.
How much faster is Gen5 for installing games?
Modestly — installation is bottlenecked by the source (typically the internet or the Steam server you’re downloading from) more than the destination SSD. For local file copies of game folders from one drive to another, Gen5-to-Gen5 transfers run roughly 2x faster than Gen4-to-Gen4. A 100GB game folder moves in about 12 seconds on Gen5 versus 25 seconds on Gen4.
Will using a Gen5 SSD in a Gen4 slot ruin its lifespan?
No. The drive will simply run at Gen4 speeds and consume less power. There’s no harm in installing a Gen5 drive in a Gen4 slot temporarily (for example, while waiting for a motherboard upgrade) — performance just won’t match the drive’s potential.
Are there any “fake” Gen5 drives I should avoid?
The early generation of Gen5 drives using the Phison E26 controller had thermal issues that limited sustained performance. The current crop of Phison E26 drives with improved cooling and the newer SMI SM2508-based drives perform much better. Verify the controller before purchasing — drives marketed as Gen5 but using older Phison E18 silicon are mislabeled and should be avoided.
The DirectStorage Adoption Curve
DirectStorage in 2026 sits at roughly the same adoption point as DLSS did in 2020 — promising, used by enough titles to demonstrate value, but not yet ubiquitous. Microsoft’s GDK (Game Development Kit) for Xbox Series X|S now defaults to DirectStorage for asset pipelines, which means cross-platform titles increasingly inherit the feature on PC. By Q4 2026, I expect 40–50% of new AAA releases to ship with DirectStorage GPU decompression. That figure was under 10% in mid-2024.
The implication for buyers: if you’re building a system intended to last through 2028–2029, Gen5 storage becomes a more defensible investment. The hardware is ahead of the software today, but the software is catching up rapidly. A system built today on Gen4 will work fine for current titles but will increasingly leave performance on the table as DirectStorage adoption spreads.
The Capacity vs Speed Trade-off
For the same budget, you can have a 2TB Gen5 drive or a 4TB Gen4 drive at roughly $239 in 2026. The 4TB Gen4 option is the better choice for most users — game install sizes have grown substantially, with titles like Call of Duty Black Ops 7 routinely consuming 280+ GB and Starfield ballooning past 150GB with all patches installed. Running out of capacity is a more pressing pain point than running 1.4 seconds slower per load.
If you can afford both — a 1–2TB Gen5 drive for active titles plus a 4–8TB Gen4 drive for the library — the tiered configuration is unambiguously better than either single-drive option. This is the configuration I personally run, and it’s what I recommend to friends who ask.
What About QLC Storage for Bulk Games?
QLC NAND (4 bits per cell) drives like the Crucial P3 Plus 4TB are dramatically cheaper per gigabyte ($0.060/GB versus $0.075/GB for TLC drives). The write endurance is lower and sustained write performance falls off after the cache is exhausted, but for game library storage where most files are read repeatedly and written once, QLC works fine. I run a 4TB Crucial P3 Plus as my bulk game storage and have measured no perceptible difference in game load times versus the 990 Pro for non-DirectStorage titles.
Final Verdict
The honest 2026 answer for most gaming PC buyers: a Gen4 NVMe SSD remains the right choice unless you have a specific Gen5 use case. The Samsung 990 Pro 2TB at $169 or the WD Black SN850X 2TB at $149 deliver 95%+ of the practical gaming experience of the most expensive Gen5 drives at 60–70% of the cost. Spend the savings on a larger total storage pool, a better GPU, or more RAM. Step up to Gen5 — the Samsung 9100 Pro 2TB at $239 is the sweet spot — only if you regularly play DirectStorage-enabled titles, run productivity workloads that benefit from sequential bandwidth, or specifically want to futureproof for the late-2026 and 2027 wave of Unreal Engine 5.5 games. The bandwidth gap between Gen4 and Gen5 is real and dramatic; the practical impact on gaming today remains narrow. Buy for the workload you actually have, not the benchmark numbers.
