Originally posted by: hohyss
I see. Thank you for your response. My concern is that the value I calculated from the website,
http://extreme.outervision.com/psucalculatorlite.jsp came out to be 603w.
So rather than keeping my old 550 w PSU, I decided to buy a new one.
If you can recommended anything else I'd be glad.
PSU calculators are...well let's be kind and call them inaccurate at best.
Here are AnandTech's own measurements of power used by the computer with various graphics cards:
http://www.anandtech.com/video/showdoc.aspx?i=3341&p=22
Without a heavy load on the CPU, a system with a 4870 uses around 280W. Even if you throw in another 200W for the load on the rest of the system (which is an overestimate anyway) you're still under 550W and comfortably under 650W.
Also keep in mind that the figures AnandTech reports are the power draw from the wall. What the PSU is actually delivering to the system (and what a good PSU is rated for) is roughly 20% smaller. That approximately 480W drawn from the wall would be maxing out a 380W PSU, not a 480W one. (Not that you want to be maxing out a PSU, but power draw from the wall does not directly equal the PSU rating.)
You would be fine with the 550W recommendation, but if you feel more comfortable with something larger, I'd recommend getting the Corsair 650TX, as it's one of the better values out there on 650W PSUs.
http://www.newegg.com/Product/...E16817139005&Tpk=650TX
52A of 12V goodness will run any single card out there without a problem.
Your original question is tough to nail down to a specific figure, and aigomorla was right. It depends on what kind of case you're looking to buy. HTPC cases tend to be a little bit more expensive than your average gaming case. Then there's the fact that my case has a list price of $90-100, but I got it with a $60 MIR, so I only paid $30. Very complicated question to answer, but the best way to do so would be to say that most gamers spend between $50 and $100 on their case. $50 is generally about the minimum you're going to pay for a good case unless there's a crazy deal.