Hardware Spec Index

Caldera SN-1255 XT 500GB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN1255-XT · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index5,423 (SSDs scale)
Category rank#18,521
Street price$69
Power5 W (active)
Performance per dollar78.59
Released2020

Specifications

BrandCaldera
ModelCaldera SN-1255 XT
Capacity500 GB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,800 MB/s
Sequential write4,100 MB/s
Random 4K read990K IOPS
NAND3D QLC, 238-layer
CacheDRAM-less (HMB)
Endurance180 TBW (0.33 DWPD)
Warranty3 years
HeatsinkHeatsink edition available

Related guides

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

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Cite this page: Hardware Spec Index, “Caldera SN-1255 XT 500GB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/698017 (accessed 2026-10-18).