ADATA Ultimate SU650 2TB vs TeamGroup CX2 2TB
At least one of these has no price the site currently tracks, so what follows weighs specifications alone.
| Specification | ADATAUltimate SU650 2TB | TeamGroupCX2 2TB |
|---|---|---|
| Capacity (GB) | 2000 | 2000 |
| Sequential read (MB/s) | 520 | 540better |
| Sequential write (MB/s) | 450 | 490better |
| Current best price | — | £200.93at Amazon.co.uk · captured 2026-09-12 |
| Price per TB | — | £100.47 |
| Endurance (TBW) | 1120better | 400 |
| Warranty (years) | 3 | 3 |
| DRAM cache | — | No |
| NAND type | — | tlc |
How these two compare
Sequential throughput
ADATA Ultimate SU650 2TB reads at 520 MB/s and writes at 450 MB/s; TeamGroup CX2 2TB reads at 540 MB/s and writes at 490 MB/s. Both ride the SATA bus, which caps sequential transfer near 550 MB/s in either direction — the ceiling every SATA drive works against — so what more decisively separates them is sustained and random behaviour, the DRAM cache, and endurance.
Endurance
ADATA Ultimate SU650 2TB is rated for 1120 TBW and TeamGroup CX2 2TB for 400 TBW — the total the maker warrants you can write over the drive's life. A typical desktop writes only a few terabytes a year, so either rating is many years of headroom; the figure matters mainly as a relative signal of how hard each is built to be driven.
DRAM cache
On the cache question: the catalog does not state whether ADATA Ultimate SU650 2TB carries a DRAM cache, and TeamGroup CX2 2TB is DRAM-less. The DRAM keeps the flash-translation table close, sparing a lookup on nearly every access; a drive without it leans on host memory or its own flash, which usually shows as slower sustained random writes rather than in the headline sequential numbers.
NAND and warranty
On the flash itself: ADATA Ultimate SU650 2TB's NAND is not stated, and TeamGroup CX2 2TB uses TLC. NAND tiers count bits per cell — more bits pack more capacity into the same silicon but shorten write endurance and slow sustained writes, which is why QLC sits below TLC on lasting performance even when the sequential numbers match. ADATA Ultimate SU650 2TB carries a 3-year warranty and TeamGroup CX2 2TB carries a 3-year warranty — the length the maker will stand behind the drive, and usually a proxy for the endurance it is rated to.
Which to buy
The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.
Common questions about this pair
- Which is faster, ADATA Ultimate SU650 2TB or TeamGroup CX2 2TB?
- ADATA Ultimate SU650 2TB reads at 520 MB/s and writes at 450 MB/s; TeamGroup CX2 2TB reads at 540 MB/s and writes at 490 MB/s. Both ride the SATA bus, which caps sequential transfer near 550 MB/s in either direction — the ceiling every SATA drive works against — so what more decisively separates them is sustained and random behaviour, the DRAM cache, and endurance.
- Should you buy ADATA Ultimate SU650 2TB or TeamGroup CX2 2TB?
- The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.