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Samsung 990 PRO vs Western Digital WD Black SN770: Comparison
Samsung 990 PRO and WD Black SN770 separate most on sequential read: Samsung 990 PRO at 7,450 MB/s, WD Black SN770 at 5,150 MB/s, 31% in favor of Samsung 990 PRO. Sequential Write splits them by another 29%, again favoring Samsung 990 PRO. They match on form factor and warranty.
Read the full breakdown: SSD Specs Explained: What Actually Matters When You Buy
Which is better, Samsung 990 PRO or Western Digital WD Black SN770?
On paper, Samsung 990 PRO has the edge on sequential read, at 7,450 MB/s vs WD Black SN770 at 5,150 MB/s.
What is the main difference between Samsung 990 PRO and Western Digital WD Black SN770?
The Samsung 990 PRO is the faster drive, with a Speed Score of 8.4 against 7.0.
Specs and benchmarks
Speed Score
- Samsung 990 PRO
- 8.4/10Best
- Western Digital WD Black SN770
- 7.0/10-17%
How fast this drive is, rated from its read and write speeds, cache and NAND type. 10 is the fastest.
Brand
- Samsung 990 PRO
- Samsung
- Western Digital WD Black SN770
- Western Digital
Model Number
- Samsung 990 PRO
- 990 PRO
- Western Digital WD Black SN770
- SN770
Series
- Samsung 990 PRO
- 990 PRO
- Western Digital WD Black SN770
- WD Black SN770
Bus Interface
- Samsung 990 PRO
- PCIe 4.0 x4
- Western Digital WD Black SN770
- PCIe 4.0 x4, NVMe
Form Factor
- Samsung 990 PRO
- M.2 2280
- Western Digital WD Black SN770
- M.2 2280
Sequential Read
- Samsung 990 PRO
- 7450 MB/s
- Western Digital WD Black SN770
- 5150 MB/s-31%
Sequential Write
- Samsung 990 PRO
- 6900 MB/s
- Western Digital WD Black SN770
- 4900 MB/s-29%
DRAM Cache
- Samsung 990 PRO
- LPDDR4
- Western Digital WD Black SN770
- DRAM-less with HMB
NAND Type
- Samsung 990 PRO
- Samsung V-NAND TLC
- Western Digital WD Black SN770
- TLC (DRAM-Less, HMB)
Heatsink
- Samsung 990 PRO
- Available
- Western Digital WD Black SN770
- Not Included
Warranty
- Samsung 990 PRO
- 5 Years
- Western Digital WD Black SN770
- 5 Years
Which one should you pick?
Choose Samsung 990 PRO if you want the higher speed score (8.4 vs 7.0), the higher sequential read (7450 MB/s vs 5150 MB/s) and the higher sequential write (6900 MB/s vs 4900 MB/s).
Choose WD Black SN770 if you already have it on hand or find it at a lower price.
Verdict
Samsung 990 PRO
8 / 10 Expert Rating
Still the best-engineered PCIe 4.0 drive.
Western Digital WD Black SN770
8.4 / 10 Expert Rating
One of the strongest mainstream value picks in the entire PCIe 4.0 tier.
More comparisons in SSDs
Compare Samsung 990 PRO with
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- Samsung 990 PRO vs Acer Predator GM7000 (IG5236 + Micron B47R)
- Samsung 990 PRO vs ADATA XPG Gammix S70 (PCIe 4.0 NVMe/7,400 MB/s Read/6,400 MB/s Write/Full-Size Gaming Flagship)