Power Supply Upgrade Input

Hello! My Rig is as follows:
Case: Titan Water case TWC-A88
Motherboard: Gigabyte EP45T-UD3P
Processor: Intel core 2 quad Q8400 @ 3.2Ghz
Processor Cooler: Case Liquid cooling
Liquid cooling: Case Liquid cooling
Memory: 4Gb DDR3 @ 1333
Graphics: Nvidia GeForce GTX 560 ti (fermi) SC(1536Mb)
SSD: None- Sata 7200 RPM @ 6mb
PSU: cyberpower 680watt
5 fans total in case

I want to upgrade my Mobo and processor and I am worried that my power supply wont be able to handle my rig.


I am and have been worrying that either my power supply or Mobo need to be replaced. When I over clock my video card or my processor and I mean lightly they tend to crash and I think its a lack of power. Can anyone help me out?
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More about power supply upgrade input
  1. Are you expecting to overclock the i5-2500K on an H77 chipset motherboard? Think again and then look for a Z77 chipset motherboard.

    I wouldn't trust any Cyberpower PC generic power supply. If it's an Apevia PSU that would probably explain your problem.
  2. I do believe it is the power supply because with my cooling and voltage set ups I am not even coming close to over heating. I just stressed tested my cpu and it sat under 80c.
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