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Acer FA100 vs Western Digital WD Black SN770: Comparison
Acer FA100 vs Western Digital WD Black SN770 sequential write compared
Sequential write is where these two genuinely part company, Acer FA100 2700 MB/s against Western Digital WD Black SN770 4900 MB/s, a 45% lead for Western Digital WD Black SN770. Speed Score backs the spec sheet up. Western Digital WD Black SN770 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 SN770, 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 SN770. Dram cache is not the same on both, DRAM-less on the Acer FA100 versus DRAM-less with HMB on the Western Digital WD Black SN770.
Acer FA100 vs Western Digital WD Black SN770: which one fits your build
The Acer FA100 suits everyday laptops and desktops with a PCIe 3.0 M.2 slot. It also earns its place with budget upgrades needing 2000 GB of NVMe storage in a standard M.2 2280 slot. It is not the one for anyone wanting PCIe 4.0 speeds, since this drive tops out at 3300 MB/s reads. Take the Western Digital WD Black SN770 for mainstream desktop and laptop upgrades wanting strong Gen 4 speed without flagship pricing. It is equally the pick for buyers who don't need a DRAM cache for their typical workload; HMB closes most of the practical gap. Avoid it for handheld or Steam Deck upgrades needing the smaller 2230 form factor. WD's own SN770M, covered elsewhere on this site, is built for that specific use case. Our rating of the Western Digital WD Black SN770 (8.4/10): one of the strongest mainstream value picks in the entire PCIe 4.0 tier.
What Acer FA100 and Western Digital WD Black SN770 have in common
Everything else lines up. Form factor and 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 SN770
- 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 SN770
- Western Digital
Model Number
- Acer FA100
- Acer FA100 (Micron B27B)
- Western Digital WD Black SN770
- SN770
Series
- Acer FA100
- FA100
- Western Digital WD Black SN770
- WD Black SN770
Drive Type
- Acer FA100
- Internal
- Western Digital WD Black SN770
- Internal
Bus Interface
- Acer FA100
- PCIe 3.0 x4
- Western Digital WD Black SN770
- PCIe 4.0 x4, NVMe
Form Factor
- Acer FA100
- M.2 2280
- Western Digital WD Black SN770
- M.2 2280
Sequential Read
- Acer FA100
- 3300 MB/s-36%
- Western Digital WD Black SN770
- 5150 MB/s
Sequential Write
- Acer FA100
- 2700 MB/s-45%
- Western Digital WD Black SN770
- 4900 MB/s
DRAM Cache
- Acer FA100
- DRAM-less (HMB)
- Western Digital WD Black SN770
- DRAM-less with HMB
NAND Type
- Acer FA100
- TLC
- Western Digital WD Black SN770
- TLC (DRAM-Less, HMB)
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 SN770 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 (4900 MB/s vs 2700 MB/s).
Price comparison
| Retailer | Acer FA100 | Western Digital WD Black SN770 |
|---|---|---|
| Best Buy | View on Best Buy | |
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
Western Digital WD Black SN770
8.4 / 10 Expert Rating
One of the strongest mainstream value picks in the entire PCIe 4.0 tier.