Hardware Spec Index

Tessarix PX-1891 Pro Dual M.2 PCIe Switch Card

PCIe Cards & NVMe Enclosures · Tessarix · SKU PX1891-PRO · Released 2025 · Updated 2026-10-18

Key facts

Benchmark index4,379 (PCIe Cards & NVMe Enclosures scale)
Category rank#18,519
Street price$239
Power6 W
Performance per dollar18.32
Released2025

Specifications

BrandTessarix
ModelTessarix PX-1891 Pro
TypeDual M.2 PCIe Switch Card
Host interfacePCIe 4.0 x8 with onboard PCIe switch (no bifurcation needed)
ThroughputUp to 14,000 MB/s aggregate
Drive supportM.2 NVMe 2230 / 2242 / 2260 / 2280
CoolingHeatsink + 40 mm fan
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
Altrix PX-4674 XT Dual M.2 PCIe Switch Card5,240$319Compare
Altrix PX-4384 Pro M.2 NVMe to PCIe 4.0 x4 Adapter1,429$39Compare
Tessarix PX-8617 Ultra USB4 40Gbps NVMe Enclosure3,418$159Compare
Tessarix PX-8452 Edge M.2 NVMe to PCIe 4.0 x4 Adapter2,142$69Compare
Strivon PX-1715 Edge USB 3.2 Gen 2x2 NVMe Enclosure5,378$349Compare
Altrix PX-2604 Edge USB 3.2 Gen 2 NVMe Enclosure1,341$29Compare

All PCIe Cards & NVMe Enclosures · JSON

Cite this page: Hardware Spec Index, “Tessarix PX-1891 Pro Dual M.2 PCIe Switch Card”, https://vextor7.com/item/5737 (accessed 2026-10-18).