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<div class="quote-container"><span>Quote:</span>
<div class="quote-block">Originally Posted by <strong>Phaedrus2129;13919034</strong> <br>
I count dual gpu cards as a single card. A single HD6990 would be fine on a 550W. Two (quadfire) would need an 850W.</div>
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Alright, thanks for clearing it up, sounds about right. <img alt="smile.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/smile.gif"><br><br>
At first I thought my XFX 750w Black Edition was not enough for my sig rig, but looks it like it is waaaaay more than enough. <img alt="tongue.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/tongue.gif"><br><br>
Thanks again! <img alt="wink.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/wink.gif">
 

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Thank you for this, it's very helpful.<img alt="smile.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/smile.gif"> Perhaps a sticky?
 

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Thanks for the great info!
 

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Lol My sig rig would have been fine on a 450W PSU, but i saw that ultra LSP 750W on the shelf right next to the OCZ Fatal1ty 500W (which was on sale).... and i was like.... zomg! soo cheap!!!! i take it home, slap it in, and it starts running a little loud, for around 60% load... so i did some research.... and go figure, its a rebadged POS >.<<br /><br>
Im not even kidding, when i shut down my rear case fan, my 2 front fans, my top 140mm, and my Graphics card fan to 20%, i can hear it over a single CM R4, this makes me want to just pick up the PSU and throw it out the window..... but hey, ill make use of that 40 bucks while its still working.
 

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Thanks for making this Phaedrus, hopefully it will prevent some of the many overestimates of power requirements recommended to people in threads on this site!<br><br>
I'd go as far as saying that the majority of users on here have too much power for what they are running, and all too often I see these same mistaken users recommending far to powerful PSUs to people. I'll just link to this thread in the future! Long overdue a rough guide like this is I think...
 

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Well done <img alt="biggrin.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/biggrin.gif"> this is good info for everybody
 

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many ppl will get the benefits from this kind of thread. thanks <img src="/images/smilies/redface.gif" border="0" alt="" title="Embarrassment" class="inlineimg" />
 

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Great!! Thanks
 

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Wow, this is really nice. Handy tool too!
 

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cool stuff, should be helpful for a lot of people.<br><br>
wish i knew why my system draws soo much power lol. I would love to add a third 6970 but i dont want a new psu and with my current draw i dont think i could <img alt="frown.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/frown.gif">
 

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great write up and just what OCN needed, Thanks!
 

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Wow this is some great info. Now I can finally stop being a baby and SLI my 580. <img alt="wubsmiley.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/wubsmiley.gif">
 

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Am I the only one that does not understand this? I am sure there will be others as well.<br><br>
Pay attention to + or -<br><br>
Example hardware:<br>
So if I had a GTX590 & a Sandy Bridge i5/i7, I would subtract -25W from 550W? and then whats with +0W?<br><br>
Got my mind <img alt="wheee.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies//wheee.gif"> & <img alt="confused.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/confused.gif">.<br><br>
Please throw an example out here to clarify this for me.
 

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Discussion Starter #35
I made a quick edit to make a little clear.<br><br>
For your system, you have a GTX590. So that's base wattage = 550W.<br><br>
You have a Sandy Bridge CPU. So subtract 25W.<br><br>
That gives you 525W. So something like a SeaSonic S12II 520W or rebrand would work great for you.<br><br>
+0W means that something does not affect your wattage at all, or by an insignificant amount. So it doesn't change your final number at all.
 

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<div class="quote-container"><span>Quote:</span>
<div class="quote-block">Originally Posted by <strong>Phaedrus2129;13946313</strong> <br>
*snip*</div>
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Awesome, Thanks.<img alt="thumb.gif" class="bbcode_smiley" src="http://files.overclock.net/images/smilies/thumb.gif">
 

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Quick and dirty<br><br><img alt="me_gusta_by_megustaplz_d30cns2_Texbex_officially_off_the_market-s510x510-172469-535.jpg" class="bbcode_img" src="http://files.sharenator.com/me_gusta_by_megustaplz_d30cns2_Texbex_officially_off_the_market-s510x510-172469-535.jpg">
 

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This can lead people to buying cheaper PSU's that don't have sufficent Amps. This guide needs to mension Amps. People might buy a 6990 and a Generic 550w with only 20A on the 12v!
 

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Discussion Starter #39
<div class="quote-container"><span>Quote:</span>
<div class="quote-block">Originally Posted by <strong>BradleyW;13954952</strong> <br>
This can lead people to buying cheaper PSU's that don't have sufficent Amps. This guide needs to mension Amps. People might buy a 6990 and a Generic 550w with only 20A on the 12v!</div>
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Except that I explicitly tell people to buy based on the OCN Recommended PSU guide. And all PSUs on that list have adequate +12V current rating for their wattage.
 

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<div class="quote-container"><span>Quote:</span>
<div class="quote-block">Originally Posted by <strong>BradleyW;13954952</strong> <br>
This can lead people to buying cheaper PSU's that don't have sufficent Amps. This guide needs to mension Amps. People might buy a 6990 and a Generic 550w with only 20A on the 12v!</div>
</div>
The idea is that they don't buy a generic 550W unit because they follow subsequent instructions:<br><div class="quote-container"><span>Quote:</span>
<div class="quote-block">Originally Posted by <strong>Phaedrus2129;13918387</strong> <br>
Tally up your base wattage and modifiers, and you should now have my recommended wattage. Now go here:<br><b><span style="font-size:12px;"><a class="bbcode_url" href="http://www.overclock.net/power-supplies/183810-faq-recommended-power-supplies.html">OCN Official Recommended PSUs</a></span></b><br>
And pick a PSU within +/- 50W of your recommended wattage that fits your budget.</div>
</div>
 
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