Differences are marked in red SPATIUM M480 PRO PCIe 4.0 NVMe M.2 1TB SPATIUM M480 PRO PCIe 4.0 NVMe M.2 2TB SPATIUM M480 PRO PCIe 4.0 NVMe M.2 4TB Model Name SPATIUM M480 PRO PCIe 4.0 NVMe M.2 Capacity 1TB 2TB 4TB Controller PHISON E18 Flash Memory 3D NAND DRAM Cache 1GB DDR4 2GB DDR4 2GB DDR4 Form Factor M.2 2280 Interface PCIe Gen4 x4, NVMe 1.4 Compatibility PCIe Gen4 / Gen3 / Gen2 / Gen1 Dimensions 80.00mm (L) x 22.00mm (W) x 2.15mm (H) Sequential Read up to (MB/s) 7400 Sequential Write up to (MB/s) 6000 7000 7000 Random Read 4KB up to (IOPS) 750,000 1,000,000 1,000,000 Random Write 4KB up to (IOPS) 1,000,000 Maximum Operating Power (W) 9.5 10.5 11.3 Idle Power PS3 (mW) 40 45 50 Low Power L1.2 (mW) 3 Operating Temperatures 0°C – 70°C Storage Temperatures -40°C – 85°C Terabytes Written (TBW) 700 1400 3000 Mean Time Between Failure (MTBF) Up to 1,600,000 Hours Limited Warranty 5 Years, or the coverage for the maximum TBW as stated, whichever comes first. Advanced Features TRIM (Performance Optimization, OS Support required) SMART (Self-Monitoring, Analysis and Reporting Technology) LDPC (Low Density Parity Check) ECC Algorithm End to End Data Path Protection APST (Autonomous Power State Transition) AES256/Pyrite (Encryption, Data Security)