Interface
Samsung 990 EVO Plus 4TBPCIe 4.0 ×4 / 5.0 ×2 / NVMe 2.0
Samsung 990 PRO 4TBPCIe 4.0 ×4 / NVMe 2.0
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What changes?
The differences at a glance
Manufacturer facts for these exact variants. The order does not declare a performance winner.
DRAM cache
Samsung 990 EVO Plus 4TBUnknown
Samsung 990 PRO 4TB4 GB
Cache arrangement
Samsung 990 EVO Plus 4TBHMB (Host Memory Buffer)
Samsung 990 PRO 4TB4 GB DRAM
990 EVO Plus 4TB: 1 unknown fields · 990 PRO 4TB: 3 unknown fields. Unknown does not mean absent.
Compare capacity and cache, not just peak speed
Manufacturer speeds are maxima under stated test conditions. They do not show sustained writing after the cache fills. TBW is a write-endurance warranty limit, not a predicted failure date; time limits also apply. Check M.2 length, interface and heatsink clearance in the host manual. Price per TB uses nominal decimal capacity and a confirmed delivered total.
| Specifications | Samsung990 EVO Plus 4TBMZ-V9S4T0BWRemove | Samsung990 PRO 4TBMZ-V9P4T0BWRemove |
|---|---|---|
| Interface | PCIe 4.0 ×4 / 5.0 ×2 / NVMe 2.0 | PCIe 4.0 ×4 / NVMe 2.0 |
| Sequential read, up to | 7250 MB/s | 7450 MB/s |
| Sequential write, up to | 6300 MB/s | 6900 MB/s |
| DRAM cache | Unknown | 4 GB |
| Random read, up to | 1050000 IOPS | Unknown |
| Factory heatsink | No | Unknown |
| Drive height, up to | 2.38 mm | Unknown |
| Cache arrangement | HMB (Host Memory Buffer) | 4 GB DRAM |
| Shop offers | No verified offers yet | No verified offers yet |
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