Your old mobo is an atx, so any atx mobo should fit.
Pick a cpu and then shop for a mobo that supports it.
ok so i have a older predell alienwere desktop and i wanna upgrade the monther board this is the one i have
https://www.cnet.com/products/evga-nforce-680i-sli-motherboard-atx-lga775-socket-nforce-680i-sli-series/specs/
what i am wondering is if there are ant mobo's out there that would fit the case i have and can run a core i5 processer and atleast 16 gigs of ram the case i ahve is an old area 51 destop
the computer modle number is
alienware area 51 7500 r5

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