Here's the hardware of a pc that my cousin will but soon and he asked me to choose it for him: corsair vengeance ram 16gb, 1600mhz ram, 2x8gb ddr3 ram / seagate barracuda 1tb, 64mb cache, 7200rpm hard drive / Samsung 840 evo, 250gb ssd / gigabyte geforce gtx 770 WINDFORCE video card, 4gb gddr5, 256bit/ Asus 24x DVD burner / cooler master haf 922 case / antec high current gamer (i hesitate between the 620w and 750w, which of these two is the most recommanded for the consumption of the computer?) power supply, modular, 80 plus bronze / amd fx 8350 (i hesitate between the amd fx 9370. Will it be too hot if these is the cooler master hyper 212 evo like cpu cooler and is it enought mature?) / gigabyte ga-990fx3-ud3 motherboard, socket amd3+ (if I use the cpu amd fx 9370, for which bios I will need to upgrade?) / cooler master hyper 212 EVO cpu cooler. Do my pieces are good and compatibles? If also, can can you answer of my hesitations please and if A pièce doesn't match with the others, can I have suggestion of replace the piece(s) who doesn't work with the other(s) ? If all yes, do my computer is good globally or the performances of the pieces are 'proportionnals'? If not all is good, can I have suggestion of pieces to change for that all become good please?