Hardware Spec Index

Novexa SN-6638 Ultra 2TB PCIe 5.0 NVMe M.2 2280 SSD

SSDs · Novexa · SKU SN6638-ULTRA · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index11,180 (SSDs scale)
Category rank#23,320
Street price$299
Power9 W (active)
Performance per dollar37.39
Released2024

Specifications

BrandNovexa
ModelNovexa SN-6638 Ultra
Capacity2 TB
Form factorM.2 2280
InterfacePCIe 5.0 x4, NVMe 2.0
Sequential read13,900 MB/s
Sequential write10,800 MB/s
Random 4K read2,150K IOPS
NAND3D TLC, 232-layer
CacheLPDDR4 DRAM, 2 GB
Endurance1,200 TBW (0.33 DWPD)
Warranty5 years
HeatsinkIncluded (recommended for sustained loads)

Related guides

NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 5.0 ExplainedPCIe 4.0 vs PCIe 5.0

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Cite this page: Hardware Spec Index, “Novexa SN-6638 Ultra 2TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/19950801 (accessed 2026-10-22).