a:It only matters if the wattage is high enough. psu's are not really linked to platforms. You will most probably need more wattage later as you upgrade.
b:Generally, if it fits on the mobo(which will hold 3 cards) it fits in the case.
Get the ASUS P7P55D-E Pro for USB 3.0 & SATA 6 Gps for $20 more. Especially if you plan to keep the mobo for a few years.
You need to decide on the gpu's 1st before the psu. Judging by your post, I don't think you got the money for a CF setup right now. So I suggest you go with a single gpu and a bit beefier psu for later gpu upgrades. Like the HD 5770. What games do you plan? What's your budget for everything?
Ok i am looking for a good gaming pc , which can be upraded in future when i get more funds , I have about £700 not sure what that is in USD , I dont need Optical and Hard drives , nor Operating system so all i have been looking at is CPU,GPU,PSU,RAM and Mainboard , If anyone has any good suggestions i would like to hear them , I looking for something that will be alot better than what i have now which is
Basically i want to better everything i have now and be able to play games at high spec , reason.... i want to go back to pc gaming as i have grown tired of consoles , all to be played on my 37" 1080p LCD tv.
If anyone has any good suggestions i would like to hear them , I looking for something that will be alot better than what i have now which is
I learned that if one uses for lot of gaming with a single gaming card etc. then it's enough to choose like a Corsair 550W PSU, otherwise it's better to look for a 650W or even 750W (depending upon your PC gaming card type, numbers, power drawn etc).
In my case, considering for a Corsair 550/650W PSU (Core i5-750 + one Sapphire Radeon HD 5770 1 GB card). Honestly, don't know if I need a 650W for very sure though it cost some $10 more. Anyway, have a look at them: