Not sure what you mean by 'speed of motherboard'. Most curernt motherboards will do the job. Gigabyte, ASUS (not the ASRock line), and MSI should work well. You may find even better deals if you look for a CPU and MB combo. Sites like NewEgg sell combos like that and you can save money on purchasing a 'combo deal'. Although you haven't mentioned it, get 8 GB of RAM for your new system. It will handle anything short of massive (and I mean massive) amounts of Skyrim mods. 
>>>>>Not sure what you mean by 'speed of motherboard'.<<<<<
chas>>>>>....a basic pc can be done on the cheap with a $50 MB but i dont think a cheap build will work for a decent gaming PC. a better MB will be needed fro decent gaming.
PD>>>>Although you haven't mentioned it, get 8 GB of RAM for your new system. It will handle anything short of massive (and I mean massive) amounts of Skyrim mods.
s
chas>>>>i could be wrong but most modern MBs have 4 slots for RAM capable of 4 8g sticks of RAM at 32gs.....i think XP was 2 slots for RAM.
so i guess 2 4gs sticks of DDR3 1600 will = 8gs.... i was definitly looking at a cabinet with plenty of good cooling vents and 8-16gs of DDR3 1600 RAM.
in the PC wizards opinion, if i get a good MB with 8-16gs or more hDDR3 1600 will it still need a card because it will need alot of fans for cooling for the card?
Edited by chas, 17 March 2015 - 12:27 AM.