MZ-77Q4T0 vs SB-RKT5-4TB
Samsung MZ-77Q4T0 (4TB) versus Sabrent SB-RKT5-4TB (4TB)
Verdict
For a NAS cache or any write-heavy pool, the SB-RKT5-4TB is the safer pick - the MZ-77Q4T0 uses QLC NAND, which wears out faster and slows down badly under sustained writes. Only consider the MZ-77Q4T0 for light, read-mostly storage.
| MZ-77Q4T0 | SB-RKT5-4TB | |
|---|---|---|
| Capacity | 4 TB | 4 TB |
| Form factor | 2.5 | M.2 |
| Interface | SATA | NVMe |
| NAND type | QLC | TLC |
| Endurance (TBW) | 1,440 TB | 3,000 TB |
| DWPD | - | - |
| DRAM cache | Yes | Yes |
| Power-loss protection | No | No |
| Sustained write | 160 MB/s | - |
| Price / TB | $229.23 | $239.71 |
Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB uses the cheapest live price where available.