this post was submitted on 27 Jun 2026
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AMD GPUs used to be really good at this. Not sure how well it works nowadays, with generally higher resolutions and thus higher bandwidth requirements. I'd imagine it involves a lot of trial and error with displayport chaining.
Matrox cats are even better. 8 displays per card.
TIL Matrox still exists. I think I used to have one of their cards in the 90s, but I don't remember which.
A modern computer can easily fit 4 low-end GPUs plus the onboard one. Most things that used the slots are onboard the motherboard or USB now.
That's not what it looks like in my PC, but I guess you might be right. Although it seems that most motherboards, people can actually afford come with far fewer full PCIe slots.
If you can afford 15 huge monitors, you can splurge on the motherboard with extra PCI-E slots.