Altrix SN-4955 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Altrix · SKU SN4955-ULTRA · Released 2023 · Updated 2026-10-22
Key facts
| Benchmark index | 6,502 (SSDs scale) |
|---|---|
| Category rank | #9,276 |
| Street price | $109 |
| Power | 7 W (active) |
| Performance per dollar | 59.65 |
| Released | 2023 |
Specifications
| Brand | Altrix |
|---|---|
| Model | Altrix SN-4955 Ultra |
| Capacity | 1 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 4,800 MB/s |
| Sequential write | 3,600 MB/s |
| Random 4K read | 970K IOPS |
| NAND | 3D TLC, 238-layer |
| Cache | DRAM-less (HMB) |
| Endurance | 600 TBW (0.33 DWPD) |
| Warranty | 5 years |
| Heatsink | None |
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, “Altrix SN-4955 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/43677572 (accessed 2026-10-22).