ok but understand this OP if a power supply says it is a 250 watt and is say 75% efficient it can only sustane 187 watts and if you run at this max all the time it will not last very long and will run very hot. We are not trying to cruch you plan it is not a good idea to do this400 and 450 watt power supplies are very cheap $50 range for a good one..
Ok ,I'll change the Power Supply Unit. But my computer is a Dell Inspiron 545s (it has a slim cabinet )
. Please give me a list of PSU's which would be cheap and easily fit to my cabinet.
Also My PCI - Express Version is 2.0
Will the GTX 650 (PCI-E 3.0) fit in my slot ?