I'm considering getting the oldest motherboard and i7 cpu that supports 64gb of RAM, as an upgrade for my i7-3770 desktop, which still feels fast enough, but o

I'm considering getting the oldest motherboard and i7 cpu that supports 64gb of RAM, as an upgrade for my i7-3770 desktop, which still feels fast enough, but only has 16gb. They're so cheap on ebay, and it would be a way to get avx-2 support too. The risk is that 2nd hand may have reliability problems of course.