How to upgrade old computer psu? Tags: Prebuilt Power Computer Systems Last response: November 20, 2012 10:34 PM in Systems Share tonyantonio November 20, 2012 9:45:14 PM I have this old computer I am upgrading and it has a 3oo watt power supply I am thinking to upgrade it, so will new psu's work wth it More about : upgrade computer psu Traildriver November 20, 2012 10:30:01 PM What hardware do you have and what are you planning to with it? tonyantonio November 20, 2012 10:34:44 PM Just a video card and ram Its a dell Optilex 745C Can't find your answer ? Ask ! Publish Related resources Looking to upgrade video card on old computer Forum Upgrade and old computer - Budget 600-900 Forum How much is my old computer worth? Forum New Upgrade on Computer (4 years old ) Forum Upgrade a old computer ??? Forum Upgrade an old computer to play new games Forum 7870... and a 6-year old PSU Forum Help with upgrading old computer please Forum Upgrading a old computer Forum PSU , useage, advice, SLI (resell of my old parts as a whole computer ) Forum Old HP computers; sparks fly out of PSU when plugged in; help? Forum Need help upgrading my old computer ? Forum Will this cooler fit in this case and could i use my old psu in it? Forum Re-use old PSU for new build, good idea or not? Forum New casual gaming setup for my 5 year old 620 W modular PSU ? Forum Upgrading PSU , how does a computer handle changes in power? Forum Good to use old PSU ? Forum Upgrade - new MB CPU SSD with some old parts Forum Gaming Build: Budget $2,300 Forum How would a a10-5800k and hd 6670 do irl. Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !