are usually minimal. Increasing capacity will do no harm, and in fact, your system will run better. Go for the 400 or larger.
Very few on line outlets ship for free for so small an amount.
The PSU that came with it is a 300 watt. I purchased a 400 watt not knowing for sure if they needed to be the same wattage. I do have a PSU from another computer that is 250 watts. Could someone let me know if I can only use a 300 watt to replace it? Could i use the lower wattage one i have? Are there any other stipulations I should know about? Also recommendations on where to get a decent PSU online with free and or faster delivery?
thank you very much!