Silicon Power 4TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD

Written analysis

Silicon Power 4TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD at a glance

The Silicon Power 4TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD is a 4000 GB M.2 2280 SSD using PCIe 4.0 x4, NVMe 1.4. The controller is Phison E21T. Flash type is TLC 176-Layer. Cache is listed as Host-Memory-Buffer (HMB).

Rated sequential throughput is 5000 MB/s read and 4500 MB/s write. Random throughput is 570K read IOPS and 600K write IOPS. The calculated specification score is 63.7.

Best fit: General storage workloads where compatibility and price matter more than peak transfer rates.

Endurance and thermals

Rated endurance is 2400 TBW, or approximately 600 TBW per TB of capacity. The listed warranty is 5 years.

Current value

At $510, the drive costs $127.49 per TB. Performance / price is 18.7 and capacity value is 75.0. Compare these values with nearby drives below; interface generation and headline speed alone do not determine value.