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Where did I say it would take a big performance hit? I was just confirming that yes, they can perform at lower speeds.

What Mac mini came with a nvidia gpu?

Sorry this was more so towards the person you quoted lol. And that many people don't really understand the real performance at different bandwidth levels so I'm just getting it out there :p

Check my earlier post on the thread. I connected my mac mini to a MSI 660 desktop gpu using the thunderbolt port and ViDock enclosure.
 
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