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Will my PSU be enough for SLI 800 series?

#1YaLikeDagsPosted 8/17/2014 1:26:43 PM(edited)
Hoping to upgrade my current 670ftw card to one of the 800 series releases, will my current PSU be enough to power an SLI setup? I don't know if the power consumption specs have been released yet for the 800 cards, but I'm just assuming they'll be comparable or less than the 700 series.

Here's my current setup, 670 to be replaced as mentioned
PSU - Corsair HX750
i5-3570k
ASRock Z77 Extreme6 LGA 1155
CD/DVD burner
7200 RPM HDD
830 Series SSD
GTX 670 ftw (just one, not SLI)
4 sticks DDR3 ram
2 x usb devices
2 x 120mm fans

Been trying to use this http://www.extreme.outervision.com/psucalculatorlite.jsp but I have no idea if it's accurate or not. So would I be safe going SLI for say the 870 or 880?
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#2mrtywerPosted 8/17/2014 1:16:23 PM
Asks about power supply, does not post what kind/wattage. This thread is going places.
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MSI H87-G43 | Intel Core i5-4690 @ 3.5 Ghz | 8G Gskill Ripjaws X @ 1600 | Sapphire Radeon R7 260x
#3fataliPosted 8/17/2014 1:21:45 PM
Do you know how much power does the 800 series cards will use? because NOBODY else knows until they are announced.
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Mystery is the source of all true science.
#4YaLikeDags(Topic Creator)Posted 8/17/2014 1:27:28 PM
mrtywer posted...
Asks about power supply, does not post what kind/wattage. This thread is going places.


Well this is embarrassing. Updated the OP.
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#5KOTRwhoopsPosted 8/17/2014 2:26:56 PM
I have a very similar rig to your and run SLI 670s with a Corsair CX750 no problem. As new cards are more efficient (normally, someone correct me if I'm wrong), I'd suggest that you will be fine. I plan to replace my 670s with two 880s when they drop.
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#6Dieinafire1Posted 8/17/2014 2:30:35 PM
You will be fine
#7WerdnAndreWPosted 8/17/2014 2:42:41 PM
If its anything like the GTX 780, it will be fine.
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Corsair 500r ~ P8Z68-V Pro ~ i5 2500k ~ Hyper 212+ ~ Corsair 2x4gb ~ TX750w v2 ~ MSI 780 TF ~ F3 1TB ~ Crucial M4 128GB ~ Xonar DG ~ Tt Meka G1 ~ Asus PA248Q
#8Links_Big_KeyPosted 8/17/2014 9:39:48 PM
I had a Antec High Current Gamer 750W PSU that could handle 680SLI with both my CPU and GPUs OCed. I read that particular PSU was tested to actually pull 900W from the wall, though.

While you probably COULD run a true 750W on this theoretical rig, you would be better off selling the 750W on Craigslist for whatever you can get for it, and drop $150-$200 on a stronger PSU to compliment your $800-$1,000 GPUs.
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CMStormtrooper / SLI GTX 780ti SC / GIG z68 / 2500k@4.2 / 8GB RAM / 256GB+128GB Crucial M4s / AW Optx AW2310 120hz for FPS/ U2713HM 1440p IPS for other games
#9Sora_AnbuPosted 8/17/2014 10:50:53 PM
I'm running a full water loop and sli 680 with a seasonic850, even during heavy tasks in not straining it.
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#10YaLikeDags(Topic Creator)Posted 8/18/2014 1:54:44 AM
Sounds like I'm safe, but who knows. In case I did end up needing to upgrade the PSU (how likely would that be? not sure how close I'm cutting it with my current PSU) what sort of wattage would I be best upgrading to?
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I like Caravans more.