Hardware Spec Index

Tessarix PX-8666 Plus Dual M.2 PCIe Switch Card

PCIe Cards & NVMe Enclosures · Tessarix · SKU PX8666-PLUS · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index5,538 (PCIe Cards & NVMe Enclosures scale)
Category rank#28,817
Street price$349
Power6 W
Performance per dollar15.87
Released2022

Specifications

BrandTessarix
ModelTessarix PX-8666 Plus
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
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
Altrix PX-3029 Prime M.2 NVMe to PCIe 4.0 x4 Adapter836$19Compare
Tessarix PX-4286 XT USB 3.2 Gen 2 NVMe Enclosure2,413$69Compare
Altrix PX-6351 Core Dual M.2 PCIe Switch Card3,788$199Compare
Tessarix PX-3672 SE Dual M.2 PCIe Switch Card5,140$299Compare
Altrix PX-8050 Ti M.2 NVMe to PCIe 4.0 x4 Adapter2,195$89Compare
Strivon PX-3866 XT USB 3.2 Gen 2 NVMe Enclosure2,509$89Compare

All PCIe Cards & NVMe Enclosures · JSON

Cite this page: Hardware Spec Index, “Tessarix PX-8666 Plus Dual M.2 PCIe Switch Card”, https://vextor7.com/item/1829311 (accessed 2026-10-24).