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SLI 680's not working properly with 3770k?

post #1 of 14
Thread Starter 
tl;dr - swapped out new CPU and the second 680 isn't being utilized anymore. Updated everything to no avail, both worked previously with 2700K installed on same rig.


Ok so my buddy just got all of his new components for his upgrade to his gaming rig, list is as follows

2x - EVGA 680 4gb cards
1x - 3770k
1x - ASUS Maximus Mobo
3x - Dell 30" 1600p monitors

We are in the process of getting it all up an running but hit a weird bump in the road. When we got the 2 GPU's in we swapped out his old 580 and dropped those bad boys in and they both powered up without a problem using his old motherboard and his 2700k. Then the motherboard came in and we swapped that out, and again both cards fired up no problem using the 2700k and Maximus board. Then the 3770k showed up, and we were excited to finally use the 3.0 lanes to their full potential, but nothing. Only 1 cards is actually functioning, they both power up and the fan spins, but the 2nd card doesn't do anything. Updated all the drivers straight from the nVidia site, checked to make sure everything was seated properly (which it was since all we did was put the new CPU in), and even tried a firmware update on the motherboard, all to no avail. Any ideas on what we should try/look for next?
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post #2 of 14
Quote:
Originally Posted by xRehab View Post

tl;dr - swapped out new CPU and the second 680 isn't being utilized anymore. Updated everything to no avail, both worked previously with 2700K installed on same rig.


Ok so my buddy just got all of his new components for his upgrade to his gaming rig, list is as follows

2x - EVGA 680 4gb cards
1x - 3770k
1x - ASUS Maximus Mobo
3x - Dell 30" 1600p monitors

We are in the process of getting it all up an running but hit a weird bump in the road. When we got the 2 GPU's in we swapped out his old 580 and dropped those bad boys in and they both powered up without a problem using his old motherboard and his 2700k. Then the motherboard came in and we swapped that out, and again both cards fired up no problem using the 2700k and Maximus board. Then the 3770k showed up, and we were excited to finally use the 3.0 lanes to their full potential, but nothing. Only 1 cards is actually functioning, they both power up and the fan spins, but the 2nd card doesn't do anything. Updated all the drivers straight from the nVidia site, checked to make sure everything was seated properly (which it was since all we did was put the new CPU in), and even tried a firmware update on the motherboard, all to no avail. Any ideas on what we should try/look for next?

 

 

Double check that SLI is enabled in the drivers? I know it sounds stupid but.. yeah.

post #3 of 14
Thread Starter 
Quote:
Originally Posted by splinterize View Post


Double check that SLI is enabled in the drivers? I know it sounds stupid but.. yeah.
dude at this point I'm expecting it to be something so blatantly obvious we will be kicking ourselves for not having this setup running properly days ago. I'm headed over there tonight after we get off work so I will check it out then and let you know what happens. Any other super simple things we may be overlooking? I know the SLI bridge is all the way in, I triple checked that already ha.
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CoolingCoolingCoolingCooling
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OCZ Agility 3 240gb Seagate 3tb None Liquid Fusion 250ml 
CoolingCoolingCoolingCooling
Raystorm MCP35x Black Ice SR1 Cougar 120 
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post #4 of 14
When you re-install drivers, or sometimes replace some hardware, SLI disables automatically.

Make sure SLI is enabled in the Nvidia Panel, I know it sounds too obvious, but I had that happen to me before. lachen.gif
    
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post #5 of 14
SLI isn't even an option on the rig... Believe me I've checked multiple times. Reinstalled Windows and it's still a no go... Any other thought?
post #6 of 14
Did you go into BIOS and check to see if the GPUs are populating the PCIe slots?

Because I basically have the same setup; GTX680 in SLI, Asus MVF, i7-3770k

Also you did plug in the 24Pin, 8Pin and the 4Pin Molex right?
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post #7 of 14
Quote:
Originally Posted by Rei86 View Post

Did you go into BIOS and check to see if the GPUs are populating the PCIe slots?

Because I basically have the same setup; GTX680 in SLI, Asus MVF, i7-3770k

Also you did plug in the 24Pin, 8Pin and the 4Pin Molex right?

Yeah did you plug in the extra connection on the motherboard itself? The molex giving more power for multi gpu setups
post #8 of 14
I am going to check BIOS now, but yes everything is plugged in fine. I had the same setup with an 2700k processor and everything worked fine. Now I threw in the new CPU and nothing works. IE the second video card and monitor. The 2nd vid card is powered on because it's spinning and what not but the Comp doesn't seem to register it's there.
post #9 of 14
Yeah the fan spins if its plugged in coz it can still get power from the pcie slot on the mono itself.. I made a mistake before thinking my second card wasn't working even if fans were spinning and it turned out I forgot to plug the 6pin pcies onto the card hahahahaha

If the molex plug is in.. I'm stumped. :s
post #10 of 14
My MOBO isn't showing the 2nd card right now. But I never removed it... Thoughts? PS IM UNDER MY DESK RIGHT NOW!!!
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