I just bought an HP Omni 27 1057c from Sams Club. I like it a lot, but I want more performance. discovered that the integrated Intel HD 2500 graphics is almost useless for most games. I found a website that says it can be upgraded at http://www.pcmag.com/article2/0,2817,2398314,00.asp. The computers specs can be found at Sams Club website or at HP website HP Product Specs.
So what do you think? Can I upgrade Motherboard and Video Card?