I am about to attempt an upgrade to an Intel 955 motherboard and 950 Pentium D CPU. It appears with minimal to no hacking away at the case that I can make it work, but I have seen what appears to be the 832GMs case on eBay stating that it DOES NOT support the 955 Intel MB. I don't care much if I have to use a Dremel and remove small pieces of metal from the back of the case, as long as the sides and front remain untouched. I've had to hack the hell out of a NVIDIA 9800GT's plastic casing to make it fit in the PCI-E slot before (without compromising the heatsink/vent integrity). I haven't been able to find squat for information on this system, no BIOS upgrades on Gateway's site to see if I can get it to support a dual core, much less finding any other BTX cases to switch to (I really like this one), and I'm pretty sick of it all. Its quite a nice case and a sweet accent to the entertainment center, as we use it with a Logitech wireless mouse/keyboard kit, its the center of attention, but this CPU is a bit slow even with a decent video card and 4gb RAM. I am awaiting the parts to arrive, so that I can begin. Needless to say, I'm pretty determined to make this work for me. Please let me know if you went a similar route, as I will try to remember to come back and post my results. Wish me luck man!