I am looking to upgrade my hard drive, and since my MoBo is outdated, i have to update that, and also my CPU/Processor. I found a great deal, I think, at Newegg.ca, I was wondering, would 400 watts be enough to power
500w should be enough for that build if its a decent psu. What psu do you plan to get? Stick with the top brands such as corsair etc as the cheapo generic crap dont put out the power they say and can f up your pc.
I wasn't planning on getting a new PSU as i have a budget of ~500 and at this time thats what the combo costs, I might upgrade in the future, at the moment I am not sure what brand, it is inside the silver box.
If it is a cheap generic PSU that came pre-installed in the case, it is probably of very low quality, probably overrated by a good 25%-33%, and not suitable to power a modern PC. A quality 450W-500W PSU would be sufficient for your system. Look for full range active PFC (no little voltage switch) and some level of 80+ certification for efficiency.