Hardware Spec Index

Tessarix PX-4251 Ultra M.2 NVMe to PCIe 4.0 x4 Adapter

PCIe Cards & NVMe Enclosures · Tessarix · SKU PX4251-ULTRA · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index1,239 (PCIe Cards & NVMe Enclosures scale)
Category rank#28,805
Street price$29
Power6 W
Performance per dollar42.72
Released2019

Specifications

BrandTessarix
ModelTessarix PX-4251 Ultra
TypeM.2 NVMe to PCIe 4.0 x4 Adapter
Host interfacePCIe 4.0 x4 (passive)
ThroughputUp to 7,500 MB/s (drive-limited)
Drive supportM.2 NVMe 2230 / 2242 / 2260 / 2280
CoolingPassive heatsink
Bus powerSlot-powered
CompatibilityUEFI boot supported; check slot bifurcation

Related guides

NVMe SSDs ExplainedPCIe Lanes ExplainedUSB4 ExplainedThunderbolt 5 ExplainedPCIe 5.0 Explained

Similar PCIe Cards & NVMe Enclosures

ModelBenchmarkPriceCompare
Tessarix PX-9652 Edge M.2 NVMe to PCIe 4.0 x4 Adapter3,051$139Compare
Veltrix PX-8903 Prime USB 3.2 Gen 2 NVMe Enclosure1,324$29Compare
Altrix PX-5451 Prime PCIe 4.0 x16 Riser Cable3,272$139Compare
Tessarix PX-2125 Edge Quad M.2 PCIe 4.0 x16 Card4,258$229Compare
Altrix PX-9796 Pro USB 3.2 Gen 2 NVMe Enclosure1,775$49Compare
Altrix PX-9481 Plus USB 3.2 Gen 2x2 NVMe Enclosure2,061$59Compare

All PCIe Cards & NVMe Enclosures · JSON

Cite this page: Hardware Spec Index, “Tessarix PX-4251 Ultra M.2 NVMe to PCIe 4.0 x4 Adapter”, https://vextor7.com/item/7947360 (accessed 2026-10-20).