About the PSU, sadly no, we dont get that many brands in the mid end section... i can get that Topower, Cooler Master EPP 550w or a lil bit higher a Thermaltake TR600 luckily... and maybe i can get a Sentey ERP600 i think... judging by the specs, the Topower seems really good, since the CoolerMaster delivers pretty much the same than mine (+12v x2: 16a)
About the noise, since i turned it on, when it gets to the OS desktop (either Linux or Windows) it makes this strange frequency noise, like its getting the cpu load and making it noise. This happens WITH and WITHOUT the GPU plugged in, it was kinda quiet until i installed the catalyst drivers, then it got persistant, no crashing or bsod, even after gaming, tho... just that noise.
Im pretty sure it comes out of the PSU. im writing from my old rig right now, and there's no coil whine whatsoever coming out of it... its odd since it does it in the new rig even when i take the 4850 off...
What could it be? Check it out:
http://www.putlocker.com/file/DA5E72966EB617D6
About the sound, what is really strange is the fact that the sound wasnt working when i plugged in Linux (Ubuntu 12.04), then i ran Windows 7 x64, it worked after i installed the drivers (Nor Audio or Ethernet were working with the p&p drivers)
and now the CP is constantly giving me the "new connector plugged" and "unplugged", so i have no audio now, i reinstalled the drivers, tried new ones but problem persists.
And also, since i installed the drivers i get this "Digital Output" device i have no idea what it is (in my previous rig it wasnt shown by the realtek audio manager) and once even Ethernet stopped working too.
Tried changing stuff in the BIOS, nothing...
Something odd is that appears to be transmiting a similar frequency to my speakers even tho the sound board doesnt work, if i plug it, it sends noise to the speakers (look at the video above, youll see what im saying, i was pushing the volume up to make it hearable, but you get the point)