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Acer FA100 vs Western Digital WD_BLACK SN770M: Comparison
Acer FA100 vs Western Digital WD_BLACK SN770M sequential write compared
The gap that matters here is sequential write: Acer FA100 2700 MB/s against Western Digital WD_BLACK SN770M 4850 MB/s, which puts Western Digital WD_BLACK SN770M 44% ahead. Speed Score backs the spec sheet up. Western Digital WD_BLACK SN770M scores 7 to 6.4, 9% clear. Add sequential read to that, 3300 MB/s on the Acer FA100 versus 5150 MB/s on the Western Digital WD_BLACK SN770M, and the pattern holds. They differ on bus interface too, PCIe 3.0 x4 on the Acer FA100 versus PCIe 4.0 x4, NVMe on the Western Digital WD_BLACK SN770M. There is a split on nand type as well, TLC on the Acer FA100 versus TLC, DRAMless on the Western Digital WD_BLACK SN770M. They differ on dram cache too, DRAM-less on the Acer FA100 versus DRAM-less with HMB on the Western Digital WD_BLACK SN770M. There is a split on form factor as well, M.2 2280 on the Acer FA100 versus M.2 2230 on the Western Digital WD_BLACK SN770M.
Acer FA100 vs Western Digital WD_BLACK SN770M: which one fits your build
Buy the Acer FA100 for everyday storage use where 3300 MB/s reads are fast enough. It is equally the pick for budget laptop or desktop upgrades wanting 2000 GB on a PCIe 3.0 x4 M.2 slot. Avoid it for buyers wanting PCIe 4.0 performance, as this drive is limited to 3300 MB/s reads. Take the Western Digital WD_BLACK SN770M for handheld gaming PC and Steam Deck owners who want to upgrade or expand internal storage. This drive's compact 2230 form factor is purpose-built for that specific installation. It is not the one for standard desktop or laptop builds using the larger 2280 form factor. The WD Blue SN580, covered elsewhere on this site, fits that more common installation instead.
Where the two are identical
Everything else lines up. Drive type read the same on both, so those are not worth weighing.
Specs and benchmarks
Speed Score
- Acer FA100
- 6.4/10-9%
- Western Digital WD_BLACK SN770M
- 7.0/10Best
How fast this drive is, rated from its read and write speeds, cache and NAND type. 10 is the fastest.
Brand
- Acer FA100
- Acer
- Western Digital WD_BLACK SN770M
- Western Digital
Model Number
- Acer FA100
- Acer FA100 (Micron B47R)
- Western Digital WD_BLACK SN770M
- SN770M
Series
- Acer FA100
- FA100
- Western Digital WD_BLACK SN770M
- WD_BLACK SN770M
Drive Type
- Acer FA100
- Internal
- Western Digital WD_BLACK SN770M
- Internal
Bus Interface
- Acer FA100
- PCIe 3.0 x4
- Western Digital WD_BLACK SN770M
- PCIe 4.0 x4, NVMe (M.2 2230)
Form Factor
- Acer FA100
- M.2 2280
- Western Digital WD_BLACK SN770M
- M.2 2230
Sequential Read
- Acer FA100
- 3300 MB/s-36%
- Western Digital WD_BLACK SN770M
- 5150 MB/s
Sequential Write
- Acer FA100
- 2700 MB/s-44%
- Western Digital WD_BLACK SN770M
- 4850 MB/s
DRAM Cache
- Acer FA100
- DRAM-less (HMB)
- Western Digital WD_BLACK SN770M
- DRAM-less with HMB
NAND Type
- Acer FA100
- TLC
- Western Digital WD_BLACK SN770M
- TLC, DRAMless
Which one should you pick?
Choose Acer FA100 if you already have it on hand or find it at a lower price.
Choose WD_BLACK SN770M if you want the higher speed score (7.0 vs 6.4), the higher sequential read (5150 MB/s vs 3300 MB/s) and the higher sequential write (4850 MB/s vs 2700 MB/s).