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Old May 26, 2013, 06:48 PM
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Quote:
Originally Posted by ipaine View Post
You will be fine for SLI as I have that PSU and have two 580s on it and the 780s draw less power so everything should be good.
Thanks for the vote of confidence. I will add another tomorrow and wait for the CPU cooling kit to come from Daz!
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Old May 26, 2013, 07:13 PM
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Curious what the power draw comparisons are between 580's n 780's, was running Tri SLi 580's with no issues so figuring 3 * 780's shouldn't be either
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Old May 26, 2013, 07:20 PM
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Originally Posted by rjbarker View Post
Curious what the power draw comparisons are between 580's n 780's, was running Tri SLi 580's with no issues so figuring 3 * 780's shouldn't be either
Your PSU should be fine bud. You have a 1.2K Watts PSU.
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Old May 26, 2013, 07:50 PM
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Quote:
Originally Posted by hero1 View Post
My PSU is Corsair AX850 80Gold+ so it should be good for SLI as it is certified for it!
odd in reviews they state 70a seems something is amiss to 80 cert when I get 840 + 10 for 3/5 rail

should have 960 watts on 12v rail to be true 80 cert
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Last edited by KaptCrunch; May 26, 2013 at 08:10 PM.
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Old May 26, 2013, 11:01 PM
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Originally Posted by hero1 View Post
Your PSU should be fine bud. You have a 1.2K Watts PSU.

Thanks, I know what PSU I have, was looking for someone to post up some comparison numbers. I know I was pushing things with 3 580's high OC's and high OC on my old 980X.

Also running substantial OC on my 3930k....if anyone has numbers would be great
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Old May 27, 2013, 01:33 AM
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Adding a second GTX 780 won't give you a %100 increase in performance. More like %60~70 with the latest drivers.

As for FPS, You didn't mention the software or settings, but on average you can increase the performance of a stock GTX 780 by %15.
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Old May 27, 2013, 03:08 AM
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Personally I would try a single card and see if your happy with it.. If not go dual try it out and return if not happy before your 30 days are up.
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Old May 27, 2013, 03:58 AM
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Quote:
Originally Posted by rjbarker View Post
Curious what the power draw comparisons are between 580's n 780's, was running Tri SLi 580's with no issues so figuring 3 * 780's shouldn't be either
All things being equal you should see a 5-10% drop in power consumption.
The only point that I don't have raw data on really is the CPU you have, Good actual numbers.

Otherwise the GPU stack is more efficent so power consumption should be down.

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  #19 (permalink)  
Old May 27, 2013, 07:44 AM
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Thanks Soul.....5-10% drop is better than the same or slight increase ;)
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Old May 27, 2013, 08:31 AM
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Quote:
Originally Posted by KaptCrunch View Post
odd in reviews they state 70a seems something is amiss to 80 cert when I get 840 + 10 for 3/5 rail

should have 960 watts on 12v rail to be true 80 cert
I see what you mean, however, according to the review, the unit seems to increase efficiency after burn in. Also, they stated that after the burn in the rating is very close to 80+ Gold. The thing is: I am wondering whether or not Corsair will be willing to take this unit back on the grounds that it is not a true 80+ and doesn't have specified continuous power output and exchange it for something bigger which I am willing to pay the difference. Or, should I just sell it and get the platinum series?
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