MZ-77Q4T0 vs WDS400T1R0C
SSD head-to-head - specs, value and live price side by side.
Verdict
For a NAS cache or write-heavy pool, the WDS400T1R0C is the safer pick - the MZ-77Q4T0 uses QLC NAND, which wears out faster and slows badly under sustained writes (light, read-mostly use only).
Value at a glance
Price / TB
MZ-77Q4T0
$223.56
WDS400T1R0C
$249.01
Endurance (TBW)
MZ-77Q4T0
1,440 TB
WDS400T1R0C
5,100 TB
Price history
US · cheapest per day
MZ-77Q4T0 $894
WDS400T1R0C $996
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| MZ-77Q4T0 | WDS400T1R0C | |
|---|---|---|
| Capacity | 4 TB | 4 TB |
| Form factor | 2.5 | M.2 |
| Interface | SATA | NVMe |
| NAND type | QLC | TLC |
| Endurance (TBW) | 1,440 TB | 5,100 TB |
| DWPD | - | 0.7 |
| DRAM cache | Yes | Yes |
| Power-loss protection | No | No |
| Sustained write | 160 MB/s | - |
| Cost / TBW | $0.621 | $0.195 |
| Price / TB | $223.56 | $249.01 |
| Buy |
$894
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Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB uses the cheapest live price. Buy links are Amazon affiliate.
MZ-77Q4T0
No Backblaze failure data for this model.
WDS400T1R0C
No Backblaze failure data for this model.