SanDisk Optimus GX 7100 2TB PCIe 4.0 x4 NVMe M.2 2280

The Optimus GX 7100 hits 1,400K random write IOPS, which lands it in the 96th percentile and makes it one of the fastest Gen 4 drives for gaming workloads. Sequential speeds of 7,250 MB/s read and 6,900 MB/s write are also well above average. Just know that endurance is middle of the pack and pricing swings wildly from $370 to $494, so shop around before you buy.

Let's talk about those random IOPS because that's where this drive earns its keep. 1,400K random write IOPS is the kind of number that makes loading screens disappear and keeps frame times smooth when games are streaming assets in the background. The 96th percentile random ranking means this drive handles scattered small-file operations better than almost anything else we've tested in this category. If you're playing open-world games that constantly pull in textures and geometry, this is exactly what you want.

The sequential numbers are no slouch either. 7,250 MB/s read and 6,900 MB/s write put it ahead of most Gen 4 drives we track, though drives like the Samsung 9100 PRO and WD Black SN850X can edge it out in specific workloads. The DRAM-less design is the trade-off here. SanDisk's nCache technology does a decent job masking the lack of a DRAM buffer, but sustained heavy writes will eventually show the limitation. For gaming and everyday use, you probably won't notice. For constant video editing or massive file transfers, you might.

Against the WD Black SN850X, the Optimus GX 7100 actually wins on random write IOPS, 1,400K versus the SN850X's typical numbers in our database. But the SN850X has a DRAM cache and better endurance, so it's the more balanced drive for mixed workloads. The Samsung 9100 PRO is a Gen 5 drive, so it'll smoke this thing on sequential speeds, but you'll pay a lot more for that privilege. The Crucial T500 is probably the closest competitor in terms of price and performance, and it trades blows depending on the workload. The Kingston FURY Renegade G5 and Seagate FireCuda 530R are both solid alternatives if you want DRAM and better endurance at a similar price point. The Optimus GX 7100's real edge is that random performance, which is genuinely top-tier for a Gen 4 drive.

Pricing on this drive is all over the place. US listings range from $370 to $494, which is a $124 spread across just 3 vendors. That's a huge gap for the same 2TB drive, so shopping around actually matters here. At the low end, you're getting 96th percentile random performance for a price that's competitive with other high-end Gen 4 drives. At the high end, you're paying a premium that's harder to justify. The affordability percentile sits at 22nd, which tells you this drive is priced above most of its peers. If you can find it near that $370 mark, the value proposition gets a lot more interesting. If you're looking at $494, you should probably check what the WD Black SN850X or Crucial T500 are going for first.

The SanDisk Optimus GX 7100 hits 7,250 MB/s sequential reads and 6,900 MB/s writes, which puts it in the 92nd percentile for speed in our database. That's fast enough to make it one of the better Gen 4 drives on the market, even if it's not quite at the absolute top. The random performance is where this thing really flexes though. 1,000K read IOPS and 1,400K write IOPS land it in the 96th percentile for random operations, which is basically best-in-class territory for a PCIe 4.0 drive.

But here's the catch. This is a DRAM-less drive using TLC NAND, and that shows up in the endurance numbers. It sits at the 57th percentile for endurance, which is solidly middle of the pack. For a gaming-focused drive that's probably fine, but it's worth knowing before you commit. The 5-year warranty helps soften that blow a bit, and SanDisk's 8th generation BiCS TLC NAND has a decent track record. Just don't expect this to be a write-heavy workstation drive.

If you're a content creator who regularly moves large files or does sustained 4K video editing, this drive's 57th percentile endurance and DRAM-less design will eventually frustrate you. The lack of a DRAM cache means sustained write speeds can dip when the drive is pushed hard for long periods. You'd be better served by the WD Black SN850X or Crucial T500, both of which offer DRAM and better endurance for similar money. Also, if you're on a tight budget, the 22nd percentile affordability ranking means this drive commands a premium that might not fit your wallet. There are plenty of solid Gen 4 drives in the $250 to $300 range that'll handle gaming just fine without the top-tier random performance.

The SanDisk Optimus GX 7100 is a gaming-focused drive that delivers where it counts. The 96th percentile random performance is the headline here, and it's backed up by strong sequential speeds that'll handle DirectStorage games without breaking a sweat. The DRAM-less design and middling endurance are the trade-offs, and the price needs to be right. If you can snag this near the $370 end of the spectrum, it's a compelling option for a gaming rig or laptop. At $494, you're better off looking at the SN850X or T500. The 5-year warranty and SanDisk's reputation for reliability help offset the endurance concerns, but this isn't the drive for heavy content creators who hammer their storage daily.