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Acer FA100 vs Western Digital WD Black SN850X: Comparison
Acer FA100 vs Western Digital WD Black SN850X: the sequential read difference
On sequential read the spread is 55%, Acer FA100 3300 MB/s against Western Digital WD Black SN850X 7300 MB/s, so Western Digital WD Black SN850X takes it. The benchmark result agrees. Speed Score puts Western Digital WD Black SN850X 24% ahead, 8.4 against 6.4. Add sequential write to that, 2700 MB/s on the Acer FA100 versus 6600 MB/s on the Western Digital WD Black SN850X, and the pattern holds. Acer FA100 also leads on nand layers, 176 on the Acer FA100 versus 112 on the Western Digital WD Black SN850X.
Acer FA100 vs Western Digital WD Black SN850X: which one fits your build
Buy the Acer FA100 for everyday storage use where 3300 MB/s reads are fast enough. It also earns its place with 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 SN850X for PlayStation 5 owners specifically wanting a drive engineered around that console's exact requirements. This is a genuine, specific strength independently confirmed across reviews. The same goes for PC gaming builds on PCIe 4.0 wanting a strong, well-rounded alternative to Samsung's 990 PRO. Comparable performance with WD's own engineering approach. It is not the one for the most budget-conscious PCIe 4.0 buyers. The WD_BLACK SN770, covered elsewhere on this site, delivers solid gaming performance at a meaningfully lower price.
Frequently asked questions
Do the Acer FA100 and Western Digital WD Black SN850X differ on bus interface?
Yes. Bus Interface reads PCIe 3.0 x4 on the Acer FA100 versus PCIe 4.0, NVMe on the Western Digital WD Black SN850X.
Is the NAND Type the same on the Acer FA100 and Western Digital WD Black SN850X?
It is. Both are listed at TLC, so it is not a reason to pick one over the other.
Specs and benchmarks
Speed Score
- Acer FA100
- 6.4/10-24%
- Western Digital WD Black SN850X
- 8.4/10Best
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 SN850X
- Western Digital
Model Number
- Acer FA100
- Acer FA100 (Micron B47R)
- Western Digital WD Black SN850X
- SN850X
Series
- Acer FA100
- FA100
- Western Digital WD Black SN850X
- WD_BLACK SN850X
Drive Type
- Acer FA100
- Internal
- Western Digital WD Black SN850X
- Internal
Bus Interface
- Acer FA100
- PCIe 3.0 x4
- Western Digital WD Black SN850X
- PCIe 4.0, NVMe
Form Factor
- Acer FA100
- M.2 2280
- Western Digital WD Black SN850X
- M.2 2280
Sequential Read
- Acer FA100
- 3300 MB/s-55%
- Western Digital WD Black SN850X
- 7300 MB/s
Sequential Write
- Acer FA100
- 2700 MB/s-59%
- Western Digital WD Black SN850X
- 6600 MB/s
Controller
- Acer FA100
- IG5216
- Western Digital WD Black SN850X
- SanDisk 20-82-20035
Controller Vendor
- Acer FA100
- InnoGrit
- Western Digital WD Black SN850X
- SanDisk
DRAM Cache
- Acer FA100
- DRAM-less (HMB)
- Western Digital WD Black SN850X
- DRAM
NAND Type
- Acer FA100
- TLC
- Western Digital WD Black SN850X
- TLC
NAND Vendor
- Acer FA100
- Micron
- Western Digital WD Black SN850X
- SanDisk
NAND Layers
- Acer FA100
- 176
- Western Digital WD Black SN850X
- 112-36%
Which one should you pick?
Choose Acer FA100 if you want the higher NAND layers (176 vs 112).
Choose WD Black SN850X if you want the higher speed score (8.4 vs 6.4), the higher sequential read (7300 MB/s vs 3300 MB/s) and the higher sequential write (6600 MB/s vs 2700 MB/s).
Price comparison
| Retailer | Acer FA100 | Western Digital WD Black SN850X |
|---|---|---|
| Amazon | View on Amazon | |
| 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.