it shows that for AMD Phenom II 965, r9 270, 4gb ddr3 ram, one ssd, one hdd and 3 - 120mm fans recommended psu is 340 watts, because that is my second older rig and there is 850w Seasonic M12II Evo sitting there since i changed it for Seasonic Prime 850w in my gaming rig, but 850w is too much for older rig since im not playing on it or playing a little, and want send that 850w Evo to my friend who is poor so question would be is system mentioned above will be good with 500w psu like Seasonic M12II Evo 500w