Help With Estimating My Max System Wattage?

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dragonborn123

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Nov 19, 2013
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Here's my build: http://pcpartpicker.com/p/26ENV (However, for the purposes of this wattage estimation, I'm using the 8320 because I'm considering getting it instead.)

When I calculating my wattage, I'm getting 546W at max, with OCed GPU and CPU. 144W for the 8320 (125W + 15% for OC), 303W for the 280X (250W + 53W based on power consumption tests here), and 99W for the rest of my build for a grand total of 546W. This also is not including any case fans, the cooler I will eventually get for OCing, or an SSD I might get in the future. So my actual wattage might even be a little higher than that.

Am I totally off base with these calculations? The estimated wattage seems REALLY high for my build. Do I really need a 750W PSU?
 
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g-unit1111

g-unit1111

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Most wattage calculators are grossly inaccurate as they base the wattage off poorly made power supplies. That build looks really good, a couple of minor changes I would make would be to get an optical drive and CPU cooler, and change the CPU to FX-6350. Otherwise all looks good!
 
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dragonborn123

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Nov 19, 2013
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I didn't do the calculations with a calculator, but by using listed wattage for the parts, calculating for OC, and then adding them together. I don't really doubt that I screwed up the numbers, but I'm just concerned about what my system wattage actually is, and what I'll need.

I plan on adding an optical drive and cooler (the cooler I'll add when the performance of my rig starts falling off and I need to OC). As for 6350, I'm really thinking I'll probably get the 8320, I've heard a ridiculous number of recommendations for it. And considering its just a 8350 with a slower clock, OC should do wonders for it.

I don't know though, I still need to do my research on the 8320. What's your take, would you recommend the 8320 or the 6500 and why?
 
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g-unit1111

g-unit1111

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Depends on how many graphics cards you plan to run. A single won't require more than a 600W, but a dual GPU setup will require 750W or more.
 
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jimthenagual

jimthenagual

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Solution
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dragonborn123

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Nov 19, 2013
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But what about OCing? From what I've been reading, I could be adding ~75W of power consumption at max OC. Plus, I plan on adding a couple extra parts in the future.

I'm not entirely certain the numbers are correct, but my estimated power consumption according to my own calculations and this calculator would be ~550W, possibly a little more. And isn't the goal to be running at no more than 80% load?
 
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dragonborn123

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Thanks, these were very informative. My only concern is if the first two links include OC in their wattage estimation. If not, then I may need to add quite a bit more wattage (plus the headroom) to these calculations.
 
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