SanDisk SSD PCIe 5.0 NVMe

The WD_BLACK SN8100 is the fastest Gen5 SSD we've tested, with 14,900 MB/s reads and top-tier random performance. It's expensive and runs hot, but the included heatsink helps. Worth it if you need maximum speed and have the cash.

This thing is a monster. Sequential reads hit 14,900 MB/s and writes aren't far behind at 14,000 MB/s. Random performance is equally ridiculous, 2,300K read IOPS and 2,400K write IOPS put it in the top tier of anything we've tested. The TLC NAND and DRAM cache keep things consistent under load, which matters more than peak numbers for real work. Endurance is solid at 4,800 TBW, well above average but not the highest we've seen. The one thing to watch is heat. Several owners mention it gets toasty, so use the included heatsink or your motherboard's M.2 cover and keep some airflow moving.

Against the Samsung 9100 PRO, the SN8100 trades blows on raw speed but Samsung tends to offer better software and a longer warranty. The WD Black SN850X is the value play here, still very fast but Gen4 and significantly cheaper. The Kingston FURY Renegade G5 and Micron T710 are both strong Gen5 competitors, but the SN8100 edges them out on peak sequential numbers in our database. If you need maximum throughput right now, this is the one. If you can live with slightly slower speeds, the SN850X saves you real money.

Pricing is all over the place. In the US you'll see it anywhere from USD 790 to USD 1,006 depending on the retailer, so shop around before you buy. Canadian buyers face an even wider spread, CAD 1,080 to CAD 1,800. The best US deal we're seeing is on the lower end of that range, but you'll need to check current listings. This is a premium drive with a premium price, and the 8th percentile affordability score confirms it. You're paying for the fastest Gen5 speeds available, not a bargain.

The WD_BLACK SN8100 is a 4TB PCIe 5.0 drive that sits at the absolute top of our speed charts. 14,900 MB/s read and 14,000 MB/s write are best-in-class numbers, and the 2,300K random read IOPS mean it's not just fast on big file transfers. It's built for workstations and gaming rigs that need to move serious data without waiting around.

It's not cheap, and it runs hot. But if you're pushing large video projects, AI datasets, or just want the fastest load times money can buy, this drive delivers. The included heatsink helps, but you'll still want decent airflow in your case.

Skip this if you're building a portable rig or laptop with tight thermal constraints, the portable score of 24.6 out of 100 tells the story. Also skip it if you're just gaming casually or doing office work, a Gen4 drive like the SN850X will feel nearly identical for half the price. If you need a drive that sips power and stays cool, look elsewhere.

Buy this if you're a content creator, data scientist, or gamer who wants the absolute fastest storage available and has the budget to match. The 4TB capacity means you won't be juggling files, and the speed means you won't be waiting on them either. It's overkill for everyday use, but that's kind of the point.