Team Group T-FORCE VULCAN Z 4TB SATA III 2.5"

4TB of SATA storage at the 93rd percentile for capacity, but speed is stuck at the 32nd percentile. It's a QLC DRAM-less drive with 800 TBW endurance and a 3-year warranty. Buy it for bulk storage, not for your boot drive.

Sequential reads hit 550 MB/s and writes hit 510 MB/s. That's the ceiling for SATA III, so the drive is maxing out the interface, but the interface itself is the bottleneck. In our database, this lands at the 32nd percentile for speed, which translates to underwhelming compared to even budget NVMe drives. Random performance is worse, sitting at the 22nd percentile, which is a weak spot for a DRAM-less QLC design.

The QLC NAND and lack of DRAM cache mean sustained writes can dip once the SLC cache fills up. Some retailer listings mention write speeds of 470 MB/s rather than 510, so real-world performance may vary depending on the workload. For loading games or playing media files, you'll be fine. For heavy file transfers or running an OS, this drive will feel sluggish compared to modern alternatives.

Stacked against the Kingston FURY Renegade SFYRDK/4000G, the VULCAN Z looks like it's from another decade. The Kingston is an NVMe drive with dramatically higher sequential and random speeds, but it costs more per GB and requires an M.2 slot. The Samsung 9100 PRO and Western Digital Black SN850X are similarly in a different performance class entirely. Where the VULCAN Z wins is compatibility and capacity per dollar. If your system only has SATA ports or you need a cheap 4TB drive for a game library, this makes sense. If you have an M.2 slot available, even a mid-range NVMe drive will run circles around it.

Pricing in the US ranges from USD 337 to USD 375 across three listings. That's a USD 38 spread, so it's worth shopping around before you buy. The best deal we're seeing is at the lower end of that range, and at that price you're paying roughly USD 0.085 per GB, which is reasonable for 4TB of SATA storage. But affordability only ranks at the 29th percentile overall, so this isn't the budget king it might appear to be at first glance. You're paying a premium for capacity, not performance.

The Team Group T-FORCE VULCAN Z 4TB is a SATA III drive that tops out at 550 MB/s read and 510 MB/s write. That puts it in the 32nd percentile for speed in our database, which is about what you'd expect from a 2.5-inch SATA drive in a world gone NVMe. But the 4TB capacity lands at the 93rd percentile, and that's the real story here. You're getting a lot of room for not a lot of money, relatively speaking.

Endurance sits at 800 TBW, which is solidly middle of the pack at the 65th percentile. The 3-year warranty is fine but not generous. And there's a catch: this is a QLC drive with no DRAM cache, despite the product title mentioning TLC in some listings. For bulk storage and game libraries, that's workable. For an OS drive, you'll feel the difference.

Skip this if you're building a new system with an M.2 slot. The 32nd percentile speed ranking and 22nd percentile random performance mean even a budget NVMe drive will feel dramatically faster. Also skip it if you need a boot drive, the DRAM-less QLC design will make Windows feel sluggish. And if you're running a NAS with heavy write loads, the 800 TBW endurance and reported reliability issues in RAID setups make this a risky choice. This is a storage drive for games and media, nothing more.

The VULCAN Z 4TB is a capacity play, not a performance play. The 93rd percentile capacity ranking is the headline, and for storing games, media, or backups, that's genuinely useful. But the 32nd percentile speed and 22nd percentile random performance mean this drive should stay far away from your OS. At USD 337 to USD 375, it's a reasonable deal for bulk SATA storage, but don't expect it to feel fast. If you need 4TB and you're stuck on SATA, this is a solid choice. If you have an M.2 slot, spend your money elsewhere.