btx pc case

anyone else dealing with this bs? I have a dell optiplex 760 I put in a nvida card from 2007 and now I want a XTREME gamer pc case example '
every good case i find is a atx though and it seems that only dell komputers use this BTX style motherboard any I did find some cases that use a btx case that are nice but they are practically impossible to find now

 

BTX never really caught on except by the manufacturers, the best available today being Dell.

A good place to find old cases like this is your local craigslist, but that's only if they're not throwing them out onto the street. I actually picked up my Precision 670 (a twin of the XPS in the first picture) for free when the owner was throwing it out. And it's a dual cpu xeon workstation that's still pretty cool to use.