Looks exactly like mine. Had do the filing of the floppy tray base and leave the lid off too. I'm running mine at 5v, much quieter and no crashes I can attribute to it yet. Need to look at a power supply fan option now. Way too loud.
is it a 80mm or 92mm fan in the PSU?
If 80mm and 19.46 cfm is enough ill say a Fractal Design Silent Series R2 series 14dB fan.
If you need to move more air ill say the Noctua NF-R8 hands down, 17dB and 31,2 cfm airflow and it's a Winner in the 80mm class for me.
if 92mm fans same applies either Noctua NF-B9 or Fractal Design 92mm Silent Series R2.
I would pick a non PWM fan from Noctuna for a PSU to be safe, they are of great quality and last forever and they are preforming good while keeping quiet also their color scheme somewhat fits old computers
