Most accurate PSU calculator?

R

Rinzler

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Dec 29, 2011
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EDIT: I've decided on one, thanks for the info. :)


I'm about to build a new computer and need to decide on a PSU, I tried a few different calculators and came up with different results, from 550w to 850w.

So, my question is this; is there an accurate psu calculator?

... or if anyone wants to recommend one for this system.

1 GTX 980 Windforce --- might need 300w alone?
1 Z97X soc
1 i7 4790k --- might overclock to 4.2GHz
2 8GB 1600 RAM sticks
1 HDD
1 SSD
1 bluray drive
1 CPU fan
3 case fans
~8 USB items

I won't be overclocking the RAM or the GPU(outside of factory OC). And no sli/crossfire in this computer's future.


Thanks in advance!
 
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Personally I don't trust any of the "calculators" as they're basically all inaccurate in my experience. My system runs around 350W at full tilt, the "calculators" say 500+ easy.

I'd aim for something in the 600W range, it'll be enough and still give you plenty of headroom.
 
The 980 doesn't require 300W on it's own. People keep mis-reading the reviews. That's ~300W pulled for the machines AT THE WALL. See the config in my sig, I'm rolling perfectly fine with a Seasonic Platinum 520W.
 
A 500 watt power supply would be more than sufficient for your system.

The most accurate PSU calculator is the OCN one made by Phaedrus.
 
Seasonic SS-660XP2 if price is no object.

Fully modular, Rock stable and highly efficient, if I was building now that's probably what I would get
 
HardOCP's GTX 980 test system, reasonably similar to yours (3770k @ 4.8Ghz) pulled 312W from the wall under full load.

If price is an object, the Rosewill Capstone 550W is on both newegg and amazon for $70, the XFX Core Edition 550W for $50 at the moment, or even the Corsair CX500 500W for $30 after rebate on newegg.
 
Just eyeballing your system I would have said 500W. USB, hard drives, ram, and fans don't have any significant effect unless you have dozens of them.

I'd probably throw a 650 in there just so you can go SLI down the road. You say no plans, but plans change.
 
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