first of all, thanks for any advice, and i am not good in english, so sorry for any mistake.
i just build up two system as;
1. i5-2500k, asus p68z-v, asus psu 550w, asus gtx 560 oc, corsair vengeance 1600 4g, 1920*1080 resolution, windows 7 64bit, my question should i get new psu for it? i mean 750w up? asus brand? corsair or xigmatek? can i add another 4g of ram by using kingston hyper x?
2. i7-2600k, asus p68z-v pro, asus 650w psu, asus gtx 550 ti, kingston hyper x 4g 1600, 1920*1080 resolution, windows 7 64bit, also my question should i get asus 560 ti top or gigabyte 560? adding another 4g ram (kingston hyperx) will get any difference? i am kinda think of get 750w or maybe 800w psu, is it wasting?
is it intel processor more to nvidia? and ati more to amd?
so i should stick to nvidia? i like to try radeon 6xxx, but i don't know whether intel processor good using ati card?