Old parts from 2009Hey guys,
Here's the system I built recently. It's pretty quiet to me, except when it's late at night as the power supply's fan does get audible. The PSU also makes some coil whine whenever the processor increases its multiplier above 13.0x, which I do not perfectly understand yet since the coil whine dissapears under load, e.g. when running a torture test via Prime95.
Feel free to ask any questions! Thanks

Specs are:
Gigabyte GA-MA78GM-S2H (rev 1.1) (Southbridge cooler replaced with a Zalman ZM-NB47J)
AMD 5000+ Black Edition (3.0 Ghz @ 1.275V, 1.6 Ghz @ 0.900V, 1.0 Ghz @ 0.800V overclocked and undervolted via CrystalCPUID)
Noctua NH-U12P with Noctua NF-P12 @ 500RPM idle, 600RPM load
Integrated HD3200 (750 Mhz)
Corsair XMS2 TWIN2X4096-6400C5 PC2-6400 2x2GB
Western Digital SE16 640GB WD6400AAKS
Antec NSK3480 with Noctua NF-P12 @ 500RPM idle, 600RPM load as exhaust
LG GH22NS30 DVD Writer
Antec Earthwatts 380W
Windows Vista Ultimate 32 bit with AMD/ATI Catalyst 8.10
As for temperature, everything runs fine under Prime95 Small FFT test. Processor temperature peaks at 40C, and the motherboard chipset peaks at 98C (though it's obvious that it is misreporting). As for the hard drive, I have no idea what happened to its thermal diode.
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Edit: 2014-12-24I've gone ahead and made a few adjustments to my system. I've upgraded the processor to the AMD Phenom 9550 (traded from a friend and I am currently undervolting with K10Stat) and I bought an old XFX 5770 from a friend. The XFX video card's stock cooler was making a grinding sound and I replaced it with the Arctic Accelero L2 Pro, which is a nifty quiet (but not silent) cooler. Its fan is removable also, so it makes cleaning much easier.
Other changes include adding Crucial 2x2GB ram to the system and adding a spare 80 mm fan @ 9V (with the Noctua Low Noise Adapter) to the front that runs during the Summer.
The current system is quiet, but nowhere near silent. The loudest component is the power supply, which ramps up quite a bit during gaming. No doubt, the combo of an AMD 9550 and an AMD 5770 is pushing the power supply hard.
Here are the specifications:
AMD Phenom 9550 2.2 Ghz (K10Stat undervolting: 2.2 Ghz @ 1.0750V, 1.1 Ghz @ 0.8375V)
Gigabyte GA-MA78GM-S2H (rev 1.1)
Corsair XMS2 TWIN2X4096-6400C5 PC2-6400 2x2GB
Crucial DDR2 667MHz PC2-5300 CL5 2x2GB
Western Digital SE16 640GB WD6400AAKS
Noctua NH-U12P with Noctua NF-P12 @ 500 RPM with SpeedFan
Antec NSK3480 with Noctua NF-P12 @ 600 RPM with SpeedFan
LG GH22NS30 DVD Writer
Antec Earthwatts 380W
XFX Radeon 5770 with Arctic Cooling Accelero L2 Pro @ 800RPM idle and @ 1300 RPM load (fan profile configured with MSI AfterBurner 3)
AMD Catalyst 14.12
Windows 8.1 Pro (x64)






