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Samsung 990 PRO vs SK Hynix Platinum P51: Comparison
Samsung 990 PRO and SK Hynix Platinum P51 separate most on sequential read: Samsung 990 PRO at 7,450 MB/s, SK Hynix Platinum P51 at 14,700 MB/s, 49% in favor of SK Hynix Platinum P51. They match on form factor and warranty.
Read the full breakdown: What Changed on Consumercarts: September 2026
Which is better, Samsung 990 PRO or SK Hynix Platinum P51?
On paper, SK Hynix Platinum P51 has the edge on sequential read, at 14,700 MB/s vs Samsung 990 PRO at 7,450 MB/s.
What is the main difference between Samsung 990 PRO and SK Hynix Platinum P51?
The SK Hynix Platinum P51 is the faster drive, with a Speed Score of 10.0 against 8.4.
Specs and benchmarks
Speed Score
- Samsung 990 PRO
- 8.4/10-16%
- SK Hynix Platinum P51
- 10.0/10Best
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
- SK Hynix Platinum P51
- Other
Model Number
- Samsung 990 PRO
- 990 PRO
- SK Hynix Platinum P51
- Platinum P51
Series
- Samsung 990 PRO
- 990 PRO
- SK Hynix Platinum P51
- SK Hynix Platinum P51
Bus Interface
- Samsung 990 PRO
- PCIe 4.0 x4
- SK Hynix Platinum P51
- PCIe 5.0 x4
Form Factor
- Samsung 990 PRO
- M.2 2280
- SK Hynix Platinum P51
- M.2 2280
Sequential Read
- Samsung 990 PRO
- 7450 MB/s-49%
- SK Hynix Platinum P51
- 14700 MB/s
Controller
- Samsung 990 PRO
- Samsung Elpis
- SK Hynix Platinum P51
- SK hynix Alistar ACNT093
DRAM Cache
- Samsung 990 PRO
- LPDDR4
- SK Hynix Platinum P51
- DRAM
NAND Type
- Samsung 990 PRO
- Samsung V-NAND TLC
- SK Hynix Platinum P51
- TLC
Warranty
- Samsung 990 PRO
- 5 Years
- SK Hynix Platinum P51
- 5 Years
Which one should you pick?
Choose Samsung 990 PRO if you already have it on hand or find it at a lower price.
Choose SK Hynix Platinum P51 if you want the higher speed score (10.0 vs 8.4) and the higher sequential read (14700 MB/s vs 7450 MB/s).
Verdict
Samsung 990 PRO
8 / 10 Expert Rating
Still the best-engineered PCIe 4.0 drive.
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)