Hardware Spec Index

Mirenta SN-9861 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD

SSDs · Mirenta · SKU SN9861-ULTRA · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index11,028 (SSDs scale)
Category rank#25,070
Street price$339
Power10 W (active)
Performance per dollar32.53
Released2025

Specifications

BrandMirenta
ModelMirenta SN-9861 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 5.0 x4, NVMe 2.0
Sequential read14,900 MB/s
Sequential write12,700 MB/s
Random 4K read2,310K IOPS
NAND3D TLC, 176-layer
CacheLPDDR4 DRAM, 4 GB
Endurance2,400 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, “Mirenta SN-9861 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/95543669 (accessed 2026-10-21).