I have a 450W PSU from Chieftec. I upgraded my graphics card from Geforce 7200GS to 9800GT and now the problem started. After ten minutes of full load (3DMark) i get a long beep and the computer restarts. I tried opening case door to rule out overheating but no help. The graphics card has no speaker and case speaker sounds different so it has to be PSU speaker. The rest of my rig is:
Sound, TV card.
Sometimes it isnt as easy as just adding them, depends on the manufacturer...theres a few calculations so im told.
Standard calc - (14*12) + (15*12) = 348w. Add the 145w that are on the 3.3 and 5 and you got 493w which exceeds the PSU's total output so i wouldnt assume you are getting full power off the 12v's anyhoo.
Either way, as i understand it (correct me if im wrong someone please!) one of those rails is for CPU only, and the other is for everything else requiring 12v rail.
Get a second opinion either way, i must admit im no PSU whore so just hang around for someone to confirm that. (im curious to know if i worked that out right as well )
Its either that, or a fault on your GPU, which i doubt. Could always test the GPU in a mates rig to rule that out though. Nice AV btw
t he guy from the shop had offer me this power source Allied 400W ALLIED-400W-SE and he sad that its enough should i believe him or not? please help me whit this issue before i'l buy this power source.