Trying to build a super budget hack. Any good prebuilts I can stick a gpu into and get going? Thanks!

I’ve been looking at some dell optiplex’s but nothing has grabbed my entire attention yet. Figured I’d ask around before purchasing. Just have an Intel cpu and I plan on throwing a 580 or something in with it. I have a 500gb ssd already as well so storage is not needed for any prebuilts. Thanks!