Capacity
Samsung 990 EVO Plus 4TB4000 GB
Samsung 990 PRO 1TB1000 GB
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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.
Interface
Samsung 990 EVO Plus 4TBPCIe 4.0 ×4 / 5.0 ×2 / NVMe 2.0
Samsung 990 PRO 1TBPCIe 4.0 ×4 / NVMe 2.0
DRAM cache
Samsung 990 EVO Plus 4TBUnknown
Samsung 990 PRO 1TB1 GB
990 EVO Plus 4TB: 1 unknown fields · 990 PRO 1TB: 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 1TBMZ-V9P1T0BWRemove |
|---|---|---|
| Capacity | 4000 GB | 1000 GB |
| 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 | 1 GB |
| Endurance | 2400 TBW | 600 TBW |
| 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) | 1 GB DRAM |
| Shop offers | No verified offers yet | No verified offers yet |
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