i just bought a r9 290 and my psu can't really hold it. random system crashes occur every 2-3 hours. PC specs are FX8320@3.7ghz; 8gb(2x4) RAM; r9 290 sapphire tri-x; 2tb wd purple hdd. my power supply is na njoy 600w Agon series (works as described on their webpage, so don't tell me that its not from a reputable brand). i have a very limited budget and from what i understand i need around 700w for a psu. my budget is 150levs(~75euro) here are some things i've seen: Chieftec Super 700W PFC Sirtec EP-750S, 750W Floston FL700 Extra Chieftec Turbo 750W Zalman PSU 700W APFC ZM700-LX FORTRON HYPER 700 FORTRON 700W FSP700 50ARN 88+ Coolermaster B700 ver.2 the last two are right at the top of my budget and would bleed me dry for 3 months forward so that's how bad the situation is. any advice is accepted.