fanxiang S880 1TB vs SanDisk Optimus GX PRO 850X 1TB
fanxiang S880 1TB is at least the equal of the other on every measure that decides this, and ahead on at least one.
| 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 | $249.99betterat Amazon.ca · captured 2026-09-13 | $379.99at Amazon.ca · captured 2026-09-13 |
| Price per TB | $249.99better | $379.99 |
| 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.
Price
fanxiang S880 1TB is $249.99 ($249.99 per TB); SanDisk Optimus GX PRO 850X 1TB is $379.99 ($379.99 per TB).
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
Against the other, fanxiang S880 1TB is even or ahead on every tracked measure and behind on none, which is the one case where the choice needs no compromise.
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.
- Which costs less per terabyte, fanxiang S880 1TB or SanDisk Optimus GX PRO 850X 1TB?
- fanxiang S880 1TB is $249.99 ($249.99 per TB); SanDisk Optimus GX PRO 850X 1TB is $379.99 ($379.99 per TB).
- Should you buy fanxiang S880 1TB or SanDisk Optimus GX PRO 850X 1TB?
- Against the other, fanxiang S880 1TB is even or ahead on every tracked measure and behind on none, which is the one case where the choice needs no compromise.