Well, it doesn't work properly then. Someone posted at another forum that he got picture at half of the screen and like a green artefact at the other half using this method. So I wouldn't call it running 480p.
Do you have the mini radiator cooler? I Jerry rigged a heatsink and 5volt fan from a dead graphics card on mine, but eventually wanna get a real cooler/fan.
My 1500ish games is all hand picked and scraped it's taken me months but zero trash well except MAME.... Tried deleting clones and broke the originals uugghh