MCIO x16 breakout boards tested: 2-slot width cuts risers from 4-8 down to 2
TheZachMueller · x · 2026-09-22
The author shares a hands-on test of cheap MCIO x16 and x8/x8 breakout boards, which have almost no documentation. After initial worry about the x16 spacing, they found the boards are exactly 2-slot wide, so max-Q GPUs can sit side by side directly — cutting the riser count from 4-8 to just 2 for a direct-GPU build.
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