Four GPUs in one Virtual Machine: Testing Quad-Crossfire in a VM

Опубликовано: 04 Апрель 2026
на канале: Pavol Elsig
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In this video, we will set up and benchmark a virtual machine with two Radeon R9 295X2's.

Passthrough helper: https://github.com/pavolelsig/passthr...

IOMMU viewer:
https://github.com/pavolelsig/IOMMU-v...

For more about improving performance:
https://wiki.archlinux.org/index.php/...
https://www.linux-kvm.org/index.php?t...
Source of vfio_bind.sh:
https://wiki.installgentoo.com/index....

Specs:
i7 3930k @ 4.5Ghz
32GB DDR3 @2400Mhz
2x295X2 GPU @ 1100Mhz, Mem @ 1500, +50 Power limit


Benchmarks used
Uningine Valley: https://benchmark.unigine.com/valley
3D Mark Time Spy: https://benchmarks.ul.com/3dmark