fanxiang S880 1TB vs SanDisk Optimus GX PRO 850X 1TB
At least one of these has no price the site currently tracks, so what follows weighs specifications alone.
| Specification | FanxiangS880 1TB | SanDiskOptimus GX PRO 850X 1TB |
|---|---|---|
| Capacity (GB) | 1000 | 1000 |
| Sequential read (MB/s) | 7300 | 7300 |
| Sequential write (MB/s) | 6600 | 6600 |
| Current best price | £134.99at Amazon.co.uk · captured 2026-09-13 | — |
| Price per TB | £134.99 | — |
| DRAM cache | — | Yes |
| NAND type | tlc | tlc |
How these two compare
Sequential throughput
fanxiang S880 1TB states 7300 MB/s read and 6600 MB/s write; SanDisk Optimus GX PRO 850X 1TB states 7300 MB/s read and 6600 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
DRAM cache
On the cache question: the catalog does not state whether fanxiang S880 1TB carries a DRAM cache, and SanDisk Optimus GX PRO 850X 1TB carries a DRAM cache. 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
On the flash itself: fanxiang S880 1TB uses TLC, and SanDisk Optimus GX PRO 850X 1TB 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.
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, fanxiang S880 1TB or SanDisk Optimus GX PRO 850X 1TB?
- fanxiang S880 1TB states 7300 MB/s read and 6600 MB/s write; SanDisk Optimus GX PRO 850X 1TB states 7300 MB/s read and 6600 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
- Should you buy fanxiang S880 1TB or SanDisk Optimus GX PRO 850X 1TB?
- 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.