Samsung 990 Pro A Top Tier Name Brand NVMe
The Samsung 990 Pro is the perfect PCIe Gen 4 NVMe SSD, if you ignore the price. While that is easy for us to admit, it's unfortunately a bit harder to explain why.
At GTT, we find it kind of difficult and annoying to talk about storage devices because at the end of the day, that's really all they are: storage. The main specs to cover are usually just price, speeds, PCIe generation, and capacity. There isn't a whole lot to talk about on the surface, but we promise to deliver the actual, underlying reasons why this premium, name brand NVMe is absolutely worth purchasing as a gamer.
GTT Quick Score: 9.2/10
Quick Summary:
For most, its going to work perfectly. There is no direct downsides, it quite literally will do anything, its great for downloading games, transferring large files for work, decreasing loading screens to near what almost feels instantaneous when on, and takes care of texture pop-in issues when compared to old drives like HDDs. This is simply achieved from its extremely high speeds on PCIe Gen 4, sitting around 7,450MB/s Sequential Read Speed and 6,900 MB/s Sequential Write Speed.
Why this matters for gaming:
These extreme speeds matter for gaming because long wait times become a thing of the past. Faster asset streaming means fewer immersion-breaking texture pop-ins, and near-instant load times take the friction out of your gaming sessions.
Additionally, combining this level of speed with a high storage capacity means you rarely have to worry about managing space. Even if you do need to constantly cycle your library, your download installation speeds stay incredibly high and consistent. Finally, a massive benefit of choosing a premium, name-brand drive is the underlying hardware, their advanced NAND flash technology and dedicated DRAM cache memory do a lot of heavy lifting behind the scenes that most users don't even realize, ensuring the drive doesn't slow down under heavy, sustained workloads.
Samsung 990 Pro: What Are The Specs?
Technical Specification | Samsung 990 Pro Details | Why It Matters for Gaming |
|---|---|---|
Interface Protocol | PCIe Gen 4.0 x4 / NVMe 2.0 | Maxes out the full bandwidth of the Gen 4 slot, giving you lightning fast data pipelines directly into the CPU. |
Sequential Reads | Up to 7,450 MB/s | Speeds up initial system boot times, background game installations, and file transfers to keep things feeling instantaneous. |
Sequential Writes | Up to 6,900 MB/s | Eradicates download bottlenecks when installing massive modern game files or downloading heavy game patches on high-speed internet connections. |
Random Read / Write | 1,400,000 / 1,550,000 IOPS | Directly translates to faster asset loading and world streaming inside open-world game titles, helping eliminate unexpected asset-pop-in and micro-stutters. |
Onboard Cache | 2GB LPDDR4 DRAM | Houses a physical, dedicated fast access pool to manage file locations, meaning the drive won't lag or drop to a crawl during massive background data tasks. |
SLC Caching Pool | Intelligent TurboWrite 2.0 (226GB dynamic buffer) | Employs an ultra fast temporary storage buffer to handle heavy file operations smoothly before saving them permanently to the main memory. |
Hardware Controller | In-House Samsung "Pascal" Chip | Built with integrated hardware automation to process read/write files efficiently, offering incredibly stable thermal management under sustained heavy use. |
Drive Lifespan | 1,200 TBW Endurance / 5-Year Warranty | Guaranteed to survive writing up to 1,200 total terabytes of data over its lifetime, meaning you can delete and redownload massive game libraries constantly without worrying about drive wear. |
Samsung 990 Pro: Pros & Cons
Pros
Samsung Magician Software: Checking vitals for all your M.2s has never been easier than with Samsung's software. You can monitor health, protect data, fully wipe the drive clean with secure erase, and manage your Samsung drive updates. It is even usable with any M.2 brand you own, minus a few brand-specific features and details.
Fastest Gen 4 NVMe: If you want the fastest Gen 4 drive, even if the real-world difference isn't massive compared to mid-range options, this is pretty much the top-tier drive to purchase.
Cons
Cost: This drive is very expensive. Samsung is consistently the most costly type of NVMe storage you can buy. Between usually ($430 - $640) depending heavily on purchase location and sales.
Check For Bugs: In its early launch days, these drives released with a notorious firmware bug that caused the drive's reported health to wear and tear down rapidly. While it is highly unlikely to encounter this out of the box in 2026, you should still immediately double-check Samsung Magician to make sure your firmware is fully up to date.
Real World Performance
Here is our comparison for the Samsung 990 Pro vs WD Black SN850X and then how well the Samsung 990 Pro holds up daily for gaming and general day to day use.
Specification | Samsung 990 Pro | vs. WD Black SN850X |
|---|---|---|
Peak Read and Write Speeds | Hits incredibly fast maximum speeds up to 7450 MB/s read and 6900 MB/s write. It pushes the absolute boundaries of the PCIe 4.0 interface to move files instantly. | Reaches slightly lower but still insane peak speeds of 7300 MB/s read and 6600 MB/s write. In day-to-day use and loading screens, you will not notice a visual difference. |
Random Response (IOPS) | Pushes up to 1,400,000 read IOPS. This massive throughput excels at loading thousands of tiny individual game files or textures smoothly, wiping out asset pop-in. | Manages a highly competitive 1,200,000 read IOPS. It maintains rapid access times that completely handle high refresh rate streaming asset tasks effortlessly. |
Sustained SLC Cache Buffer | Uses a dynamic 226GB high speed buffer pool. Perfect for typical game downloads and file transfers, though speeds will dip down to around 1400 MB/s if you completely exhaust the buffer. | Features a much larger, massive 600GB dynamic buffer pool. This large size is an absolute beast for huge video exports or installing massive uncompressed mod packs without losing speed. |
Hardware Controller Efficiency | Powered by the Samsung Pascal chip, which is highly praised for its power efficiency. It runs noticeably cooler at idle, making it easier to manage with standard motherboard heatsinks. | Runs a proprietary WD Black G2 chip. It delivers incredible raw peak performance but tends to draw more power and run noticeably toastier when pushed hard. |
Software Extras | Integrates with Samsung Magician software for deep health checks and firmware updates, giving you total manual control over optimization profiles. | Pairs with the WD Black Dashboard, which unlocks a dedicated Game Mode 2.0 to pre-load assets faster and keep the drive from dipping into low-power states. |
Daily Use & Performance
Overall, we find it to be one of the best M.2's, the speeds are accurate and consistently allows us to boot into windows in seconds, download large 4k textures for games in minutes, and play games with no stutters when it comes to storage. Of course, follow the rules and don't overfill your drive leaving some extra space depending your storage size.
Now, with everything already said, what could possibly improve those speeds for gaming performance or daily use? Actually, one major thing is the NAND flash configuration, and most importantly here, the dedicated DRAM cache on the NVMe. Samsung handles this beautifully. Without a DRAM cache, your SSD has to constantly search the slower primary NAND storage just to find out where your data is located. When a modern game rapidly streams massive texture files on the fly, a DRAM-less drive can easily get overwhelmed, causing those previously mentioned issues like micro-stutters and late in-game texture pop-in. Having that dedicated, high-speed cache allows the drive to pull up asset maps instantly, completely mitigating those stutters. Which also means keeping your eyes out for NVMe's, usually budget drives, that are DRAM-less.
Who Shouldn't Purchase The Samsung 990 Pro
The Samsung 990 Pro is great and all and pretty much does everything you need but there is a dramatically good chance this isn't everyone's first pick. Why?
Budget Comes First: This has to be one of the most expensive Gen 4 NVMes ever released. We can share with honesty that if you can't afford this, try a cheaper option. If you don't mind slightly reduced Gen 4 speeds, give a great budget NVMe a go, like the Crucial P3 Plus Gen 4 NVMe.
Need More Speed: There is a good chance that a Gen 5 M.2 NVMe might be better suited for you instead, assuming you are dealing with heavy workloads where you will genuinely benefit from those extreme, overkill speeds.
Game Tested Tech Score: 9.2/10
The Verdict
The verdict is that it's another recommendation from us. If you don't have any budget concerns and are okay with Gen 4 speeds. Then you are going to find that this is one of the best NVMe products on the market. Absolutely grab this M.2.
Our Personal Advice
The only personal advice we can really give when purchasing the Samsung 990 Pro just to look out for deals, check for updates early, and keep your PC budget in mind. Storage speed isn't the be all end all to gaming performance and higher FPS numbers.