How much wattage will I need to overclock my CPU and videoboard?

IF I want to overclock my I7 2600 Processor and videoboard. I would like to overclock the I7 2600 to 4.5Ghz and moderatly overclock the videoboard. I would also like to have a little extra wattage to futureproof this build as I would like the option to add and SLI a second 670 in the future.

Here is the current spec.

- (Bought) Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics
- ASUS SABERTOOTH Z77 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
- DDR 3 16 GB 1866 mhz (Patriot Brand)
- Black Enermax Hoplite SECC ATX Mid Tower Computer Case ECA3220, w/ Side Window and 12cm Blue/Red Combo-LED .
- CORSAIR CX Series CX750 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply
- COOLER MASTER Hyper 212 Plus RR-B10-212P-G1 "Heatpipe Direct Contact" Long Life Sleeve 120mm CPU Cooler Compatible with Intel 1155
- Seagate 1TB Serial ATA/300 Hard Drive
- Black LG UH12LS29 Internal SATA 12x LightScribe Blu-ray Optical Drive, w/ 3D Playback and M-DISC Support, 16x DVD+R/-R, 4MB Cache. OEM
- (Bought) GIGABYTE GV-N670OC-2GD GeForce GTX 670 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card
- (BOUGHT) Corsair Force Series GS 2.5in 360GB SATA III 6Gb/s Internal Solid State Drive (SSD), Model: CSSD-F360GBGS-BK. ds-dh

I got the video card today and it is a beast. fitting that it will be the heart of this beast. :D
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More about wattage overclock videoboard
  1. Best answer
    Use this to determine the PSU wattage required for your system.

    Additionally you need to make sure that you have enough current capacity on the 12v Rail(s) to safely operate your graphics card(s) plus you will need a PSU that has at least two 6 pin PCIe connectors and two 8 pin (or 6+2 pin) PCIe conectors to run two GTX 670 graphics cards. The Power supply you picked out does NOT meet those requirements. This one does:CORSAIR Enthusiast Series TX750 V2
  2. Best answer selected by nirrtix.
  3. accordingto the calculator I would need more than 750watts. So I would probably be looking at a 1000watt PSU
  4. I lowered the aging and now it says 670 should be enough... maybe I should stay safe and get the 850 watt. I want to be safer than sorry, but I am totally unsure what some of that information on that power thing means.
  5. Hmm, I was wondering why you were getting such a high recommended wattage. It certainly won't hurt anything to get the 850 watt PSU although a good quality 750 watt will work fine. Stick with good brands such as Corsair or Seasonic and you will be fine.
  6. will do! Thanks again.
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