I'm noticing high +5V Standby voltage on my PC, especially when it is kept on for an extended period of time. If the voltage is around 5.5 V when the PC is started, it increases to 6V when the PC is kept on for say 6 hours. My Radeon 5750 conked off recently, I don't know if this could be the reason. Also, I replaced my CoolerMaster 500W Extreme Power PSU with the Corsair VX450 recently but the problem still persists. I don't know what could be causing this. I first noticed this when my Abit IP35 Pro started beeping and uGuru showed a warning when it exceeded 6V.
Any idea why this could be happening?