What Voltage/Wattage Power Supply Should I Get?

Hello, I *may* be upgrading my old Dell Vostro 400's video card, and I need to know if I need to get a new power supply.

Current Components:
Power Supply: Delta Electronics DPS-300AB-26A (300W I believe)
CPU: Intel Core 2 Duo E6550 Conroe
Motherboard: Dell 0RN474
Sticks Installed: 3 (2x 1GB + 1x 2GB = 4GB)

Video Card:
OLD: Foxconn 8600GTS-256N (GeForce 8600 GTS)
NEW: ASUS ENGTX550 (GeForce GTX 550)

Hard Drive: WDC WD2500JS-75NCB3
(If I left something out, please tell me and I will get that information.)

Thanks! :D
4 answers Last reply
More about voltage wattage power supply
  1. That should be enough power for your system if you are not overclocking, if you are going to be overclocking, get a 400W...
  2. Really depends on what GPU you get. 430W will suffice but if you want say a 7870 XT then you will need minimum 500W. Make sure to get a quality supply like this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151074

    Or this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013
  3. he said he was upgrading to the GeForce GTX550
  4. Shockeray said:
    he said he was upgrading to the GeForce GTX550

    That GPU doesn't require much, if any power, so that Seasonic 430W will suffice.
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