Team Group 4TB SSD

4TB of SATA storage for USD 337 to USD 375, with capacity in the 93rd percentile of our database. Speed is a modest 550 MB/s read, putting it in the 32nd percentile, and the DRAM-less QLC design means random performance is weak. It's a great budget game library or media drive, not a boot drive.

Let's be real about the numbers. 550 MB/s sequential read and 510 MB/s write is SATA III territory, and that puts this drive in the 32nd percentile for speed in our database. For context, the top NVMe drives we track are pushing 7,000+ MB/s. This isn't a competition. The VULCAN Z is roughly ten times slower than a modern Gen4 NVMe drive. But here's the thing: for bulk storage, game libraries, media, and backups, 550 MB/s is still plenty fast. You'll load games noticeably quicker than from a mechanical hard drive, and file transfers won't make you want to throw your PC out the window.

The DRAM-less design and QLC NAND show up in the random performance numbers, which sit in the 23rd percentile. That's a weak spot. Sustained writes to a nearly full drive will slow down as the SLC cache fills up. One buyer mentioned using these in a TrueNAS setup and hitting write errors within a month, which tracks with what we'd expect from pushing a budget QLC drive into a demanding multi-drive environment. For a single drive in a desktop or external enclosure, you'll probably never notice. For anything RAID-heavy or write-intensive, look elsewhere.

Stacked against the Samsung 9100 PRO, Western Digital Black SN850X, Kingston FURY Renegade G5, Crucial T500, and Seagate FireCuda 530R, the VULCAN Z loses every speed benchmark by a mile. Those are all NVMe drives pushing 7,000+ MB/s, while this SATA drive tops out at 550 MB/s. But here's the twist: most of those competitors don't offer 4TB at anywhere near this price. The Crucial T500 and WD Black SN850X in 4TB configurations typically cost significantly more. The VULCAN Z's 93rd percentile capacity ranking is its superpower. If you're building a gaming PC and want a dedicated game library drive, this makes way more sense than spending double on an NVMe drive you'll never fully utilize. If you're booting your OS or doing heavy video editing, any of those NVMe competitors will run circles around it.

At USD 337 to USD 375 across three US listings, you're paying roughly USD 0.085 to USD 0.094 per gigabyte. That's cheap for 4TB, but the spread matters. The lowest price we're seeing is USD 337, and the highest is USD 375. That's a USD 38 difference for the exact same drive. Shop around before you click buy. The affordability score lands in the 29th percentile, which sounds bad until you remember that most drives in our database are smaller and cheaper. For raw capacity per dollar, this is actually one of the better deals out there. Just don't expect NVMe performance at this price point.

The T-FORCE VULCAN Z packs 4TB into a 2.5-inch SATA shell for around USD 337 to USD 375, which puts its capacity in the 93rd percentile of our database. That's the headline here. You're getting a massive amount of storage in a form factor that'll drop into just about anything with a SATA port, from old laptops to game consoles to NAS boxes. The trade-off is speed. At 550 MB/s read and 510 MB/s write, this drive sits in the 32nd percentile for speed, which is about what you'd expect from SATA III. It's not going to impress anyone coming from an NVMe drive.

The QLC NAND and DRAM-less design tell the real story. This is a budget-focused capacity play, not a performance drive. Team Group rates it for 800 TBW, which lands in the 65th percentile for endurance. That's decent for a QLC drive, but the 3-year warranty is shorter than what you'll find on higher-end options. The 4.4-star rating across 999 reviews suggests most buyers know exactly what they're getting and are happy with it. If you need a big, cheap storage drive and don't care about blazing speeds, this fits the bill.

Skip this if you're building a high-performance system or doing anything write-intensive. The 32nd percentile speed ranking and 23rd percentile random performance mean video editors, content creators, and anyone who regularly moves large files will feel the pain. The DRAM-less QLC design also makes it a poor choice for NAS or RAID setups, as one TrueNAS user discovered the hard way. If you need a boot drive, spend the extra money on an NVMe drive like the Crucial T500 or WD Black SN850X. And if you're planning to fill this drive past 80% capacity and hammer it with writes, the QLC NAND will slow to a crawl. This is a storage drive, not a workhorse.

The T-FORCE VULCAN Z 4TB is a capacity play, pure and simple. You're getting 4TB of storage in the 93rd percentile for capacity at a price that undercuts most NVMe alternatives. The 550 MB/s read speed is fine for game libraries, media storage, and backups. The 800 TBW endurance rating is respectable for QLC. But the DRAM-less design and 23rd percentile random performance mean this is not a boot drive and not a heavy workload drive. If you understand that going in, it's a solid buy. If you're expecting NVMe-level responsiveness, you'll be disappointed.