After purchasing an MSI R9 280 for my Dell XPS 8300 and putting in a new 725w PSU I've determined this GPU is not compatible with my motherboard. Now I'm considering building a new computer. Would it be advisable or even possible to use the intel i7 2600 3.4 ghz CPU or the 4 ram sticks from my XPS 8300? I am relatively new to all this so any tips or suggestions greatly appreciated. Thanks.