Hello I have asus z87-pro,intel i5 4670k,Asus r9 270x,2 HDD(sata) 2x2GB RAM.I been saving money on Power supply,and I have some cheap CoolerMaster 500W power supply I got it with CM case,I am not sure which model it is on the box writes(RS-500-PCAP-I3).When I shut down pc on power button it's getting turned on after 1-2secounds,this might be also wrong connected pins,I am not an expert but reset button and led light works fine.I want to buy more RAM and I currently dont have budget for all and my question is could all this work fine on 500W with 5 more case coolers without DVD-RW or I should urgently change PSU?Everything is on stock speed