980 ti Sli 760 watt psu... success?

[takoofapoc]

Third thread in the 980 ti sli series for me haha. Here, and here, are my other posts leading up to this finale.... hopefully. Anyways, to brief those not following... I recently purchased a second MSI 980 Ti 6gb OC'd edition for my rig (used on ebay), and I was not sure if I would be able to support 2 of these gpu's with just Corsair AX 760 watt psu. I got alot of good  advice from many helpful individuals (Thanks btw), many of whom believed 760 watts would be enough considering my psu's efficiency, and I think you guys were right thankfully! Have not tested this setup with any games yet, but did a Unigine valley benchmark to see the stability of it, and the performance scaling from my previous benchmarks. 

 

Build-

PCPartPicker part list: http://pcpartpicker.com/list/sbfkwV
Price breakdown by merchant: http://pcpartpicker.com/list/sbfkwV/by_merchant/

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor  ($328.99 @ SuperBiiz) 
CPU Cooler: Noctua NH-U12S 55.0 CFM CPU Cooler  ($59.50 @ OutletPC) 
($5.88 @ OutletPC) 
Motherboard: Gigabyte GA-Z170X-UD5 ATX LGA1151 Motherboard  ($174.33 @ OutletPC) 
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory  ($89.99 @ Newegg) 
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory  ($89.99 @ Newegg) 
Storage: PNY CS1311 240GB 2.5" Solid State Drive  ($66.99 @ Best Buy) 
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive  ($49.49 @ OutletPC) 
Video Card: MSI GeForce GTX 980 Ti 6GB Video Card (X2)
Case: Corsair 750D ATX Full Tower Case  ($139.99 @ NCIX US) 
Power Supply: Corsair 760W 80+ Platinum Certified Fully-Modular ATX Power Supply  ($148.99 @ Newegg) 
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer  ($18.88 @ OutletPC) 

 

Single OC'd results- 4346 (+115 core, +205 mem)

Sli no OC results- (lower min fps because of no OC?)

 

Also, here are some hw monitor screenshots to give some of the details of my clock speeds, and what not, but let me know if anything looks off please .

 

 

GPU1

 

GPU2

 

GPU-z and CPU-z

 

HWMonitor (open before I began stress testing with benchmark)

 

 

So what do you guys think? I believe everything looks stable, but I will have to test this out by actually playing some games haha. Thanks for all the help!  

 

[Guest]

Your system barely exceeds 600W, so you still have some headroom.

[HKZeroFive]

Looks fine... glad to be of help!

[scottyseng]

It should be fine, I have a single 980 Ti with a 2500K (Both overclocked...still sad your two 980 Ti cards overclock better than mine does...1500MHz max). On corsair link and my UPS unit, under load it's roughly 420W. I'm pretty sure you're fine at 750W, even overclocked.

 

I hope to pick up more used 980 Tis for my NAS. They work good for rendering. haha.

[Krzych]

Just get some simple device that will measure your power draw from the wall, not the most accurate, but you will an idea whats going on. But you most likely won't exceed 650W power draw for highest load in games that heavily use both CPU and GPU and can fully utilize 2 cards. Some reviews are reporting 660-670 W peaks but those are X99 based systems. 

 

Here is Polish review: 

System specs at 4:20 and power draw at 15:45 (578W)

 

[jjohnthedon1]

9 hours ago, Krzych said:

Just get some simple device that will measure your power draw from the wall, not the most accurate, but you will an idea whats going on. But you most likely won't exceed 650W power draw for highest load in games that heavily use both CPU and GPU and can fully utilize 2 cards. Some reviews are reporting 660-670 W peaks but those are X99 based systems. 

 

Here is Polish review: 

System specs at 4:20 and power draw at 15:45 (578W)

 

4:20 ;p

[i_build_nanosuits]

Launch battlefield 1 multiplayer, realize it makes your system pump +40% from the wall compared to anything you've ever dones with your computer before including running valley AND cinebench at the same time...realize you need a new PSU ASAP: this is the story of me last week and that ended last night with the installation of the EVGA 750 G2 i had to order to power my system properly.

[Coaxialgamer]

you'll be fine. I'm running dual 290X's on that amount of power . 

[takoofapoc]

6 hours ago, i_build_nanosuits said:

Launch battlefield 1 multiplayer, realize it makes your system pump +40% from the wall compared to anything you've ever dones with your computer before including running valley AND cinebench at the same time...realize you need a new PSU ASAP: this is the story of me last week and that ended last night with the installation of the EVGA 750 G2 i had to order to power my system properly.

Ran gta benchmark, timespy, rise of the tomb raider benchmark, battlefront, and many other titles already. Have not had any problems yet. Hopefully that means I am ok, but yea I know I should not press my luck haha. Won't be adding much more to this build without considering a new psu.... Thank you for your warning though, I will take it into consideration as I do more testing.

[takoofapoc]

4 hours ago, Coaxialgamer said:

you'll be fine. I'm running dual 290X's on that amount of power . 

I hope you are correct haha. No adverse signs yet. Other than my GPU in the top slot running a bit hot at max stress (like 75c....) Thats the only thing that has me a bit worried. Might need to add a fan or two on the bottom of the case to increase airflow out.

[takoofapoc]

6 hours ago, jjohnthedon1 said:

4:20 ;p

Thank you, yea thats pretty close to my system config, gave me a good idea of my power draw. But only time will tell I suppose, thank you for your help  . Hopefully my psu does not 420 blaze it anytime soon.....

[takoofapoc]

6 hours ago, jjohnthedon1 said:

4:20 ;p

Oops quoted your post instead of the original poster haha, whoops... you were informative as well though

 

[takoofapoc]

16 hours ago, Krzych said:

Just get some simple device that will measure your power draw from the wall, not the most accurate, but you will an idea whats going on. But you most likely won't exceed 650W power draw for highest load in games that heavily use both CPU and GPU and can fully utilize 2 cards. Some reviews are reporting 660-670 W peaks but those are X99 based systems. 

 

Here is Polish review: 

System specs at 4:20 and power draw at 15:45 (578W)

 

Thank  you, gave me a good idea of my wiggle room here, but will have to maybe order one of those devices off amazon or something.

[takoofapoc]

17 hours ago, scottyseng said:

It should be fine, I have a single 980 Ti with a 2500K (Both overclocked...still sad your two 980 Ti cards overclock better than mine does...1500MHz max). On corsair link and my UPS unit, under load it's roughly 420W. I'm pretty sure you're fine at 750W, even overclocked.

 

I hope to pick up more used 980 Tis for my NAS. They work good for rendering. haha.

Yea I am happy with the performance of this brand of 980 ti from MSI. The used one I bought off ebay is in excellent condition just as the buyer described. Good experience this time, but I am sure people have some horror stories from buying used components from ebay... I was just cautious and got lucky maybe a lil bit? Always check feedback haha.

[Mick Naughty]

Got my old setup back together. Minus the 1kpsu. About to destroy this "850" watt. 

 

Guess the 9 series is worth it for efficiency. 

[takoofapoc]

10 hours ago, Mick Naughty said:

Got my old setup back together. Minus the 1kpsu. About to destroy this "850" watt. 

 

Guess the 9 series is worth it for efficiency. 

Oh yea, look at that water loop..... sexy stuff. So with everything there, it draws 800 from the wall under load? Did I just get lucky then or do you have some crazy OC on the cpu and gpu's?

[Mick Naughty]

2 minutes ago, takoofapoc said:

Oh yea, look at that water loop..... sexy stuff. So with everything there, it draws 800 from the wall under load? Did I just get lucky then or do you have some crazy OC on the cpu and gpu's?

Well my cards are power hungry. They are hard clocked, their boost clock is 1006 from the hydro copper bios and I oc them to 1201, I can go into the 1250's but I don't see any gains. That pic is from me playing black ops 3. With my old 3770k oc'ed at 4.5ghz.

 

The setup didn't look like it does how though. I just had enough spare parts to build another pc so now I use it for surround gaming.

[takoofapoc]

7 minutes ago, Mick Naughty said:

Well my cards are power hungry. They are hard clocked, their boost clock is 1006 from the hydro copper bios and I oc them to 1201, I can go into the 1250's but I don't see any gains. That pic is from me playing black ops 3. With my old 3770k oc'ed at 4.5ghz.

 

The setup didn't look like it does how though. I just had enough spare parts to build another pc so now I use it for surround gaming.

Nice, thats reminds me.... I need a new monitor. Getting some annoying screen tearing on some games since I'm too stubborn to enable v-sync. 60hz just won't do anymore...