Tyraele
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/25 16:33:59
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I have to agree with bdary, 700W for 2 670 FTW is pushing it. The max power rating for it is 170 W. Assuming that everything is at 90% utilization (all components), you are looking at 504 W of sustained power consumption. Assuming that your PSU is decent, fairly new (low cap aging) and etc, you are are possibly pushing the limits of the PSU. At a minimum, SLI of the 600 series cards requires 750 W (500 W single card x 1.5) per Nvidia's specs. It can probably be done with some registry hacks, but it is POSSIBLE that the driver is sending a query to the PSU and it is reporting back that it is 700 W, which is below the minimum requirements as specified by Nvidia. That is the only other thing I can feasibly think of. Otherwise, you could drive older drivers and see if that works.
 Mobo: Gigabyte X570 Aorus Master rev 1.2 CPU: R9-3900XT Cooler: NZXT Kraken Z73 RAM: G.Skill Trident Neo 128 GB 3200MHz SSD: Samsung 970 EVO GPU: EVGA GTX 1080 Ti Hybrid PSU: EVGA SuperNova 1000 PQ Case: Cosmos C700P Black Edition
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/25 17:40:24
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bdary
Also, keep in mind that your PSU is 700w, however, it won't run at 700w continuously. Most likely it will provide you about 80% of 700w which is 560w give or take for continuous use. It's possible your pretty borderline on power.
true, but that's a max power draw, could it cause the SLI option not to show in the control panel when the whole system is pretty much running idle? Zuhl3156
Remove your SLI bridge and check if there was any protective tape on it that is now preventing some of the contacts from connecting the boards. I know this sounds stupid but it did happen to someone else here at EVGA forums.
Thanks for the tip but no plastic or protective tape on the sli connectors or the bridge. Just tried to install nvidia drivers in ubuntu but it just froze up and now it won't boot. Will give it a second shot and report back. Also, i have a 500w psu in another system, to test the power supply theory would it be safe to set up a 2nd power supply to only power a single card while the 700W powers the other card and the rest of the system?
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Zuhl3156
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/25 17:53:55
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I don't think your PSU is the issue. The nVidia Control panel is not recognizing your second board as being available for SLI. This seems to tell me that there is a BIOS setting that needs to be changed, a BIOS update is required, the motherboard is defective and someone at ASRock would be more familiar with a fix, or there is a problem with the driver's installation.
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/25 18:00:01
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Yeah i think your right. Might have better luck on the ASRock forums, starting to think its a DOA motherboard too.
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Zuhl3156
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/25 18:12:22
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I had an ASRock Z77 Extreme4 before this MSI and it just started flaking out for no apparent reason. I don't like their forums since they SPAM my screen with a full page add telling me to turn off my Ad Blockers. The reason? They have bills to pay! ASRock pays them to run their support site and if I were looking for parts to upgrade I would not be buying it from POP-Up SPAM. I was there earlier but didn't find anything.
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maniacvvv
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/27 11:05:46
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Zuhl3156 thought I could be of help in this thread... thanks for the heads up bro  -------------------------- I believe we can get you up and running in SLI once we get the config correct  Please check your PM's and I would be happy to personally assist you in this matter
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maniacvvv
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/27 11:23:14
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Note: if you do not live in the U.S. just post that here, and we can figure something else out
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/27 14:58:22
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Hi maniacvvv,
Don't actually live in the states(Melbourne, Australia), any details you can provide here would be most appreciated.
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Squall_Rinoa86
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/27 16:13:42
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Are the gpu's the same memory sizes? Have you tried a few other pairs to see if SLI becomes available?
Only thing I can really think of is the fact its not a certified SLi board, it just says its capable. There have been a few like that in the past with it marked as SLi capable but only truly supports CrossFireX.
See if the shop will test the both for SLI. Feeling tho its not the cards but your actual board.
   PSU: EVGA SuperNOVA 1300 G2 My Affiliate Code: AN1FW0VMG6
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/28 00:20:49
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Can't want to hear what has to say about it, cant reply to his PM directly as theres some restriction on being a member for less 5 days or something. Hoping he checks the thread again soon!
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Zuhl3156
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/28 05:40:08
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The first item that was pointed out to me by 'maniac' was your PhysX Processor setting. Change it back to "Auto-select(recommended)". Remember to hit 'Apply' in the NVCPL. 
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/28 06:31:08
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Darn, hope that wasn't the only trick he had up his sleeve. Definitely tried that already and alas, no dice. But thanks for tip =]
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Zuhl3156
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/28 06:41:50
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Next, turn off your PC and disconnect one of the monitors. Reboot with only one monitor connected to the primary video board.
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/29 02:24:23
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milestm
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/30 04:02:02
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Fiiiiiiiinnnnnnaaaaaaalllllllllyyyyyyy sorted this out and have SLI up and running!  Not the most elegant solution, and there is probably still something wrong with the board as it doesn't detect it natively, but HyperSLI 1.0 solved the issue for me. Installed it, rebooted, rebooted again and bingo, sweet, sweet SLI goodness all hooked up and working! Got the tip from the tweaktown Asrock forums when I copied this thread over. Thanks again guys for trying to help out!
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Zuhl3156
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/30 04:13:44
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It's good to hear you got that sorted and everything is working. I was following your posts at ASRock and noticed the suggestion to try HyperSLI but I am unfamiliar with AMD motherboards and their processors. Sorry I couldn't assist yesterday as I was busy with doctor appointments all day.
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bdary
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/10/30 08:18:13
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Glad to hear you got your SLI up & running...
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klepp0906
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/12/23 15:45:39
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turn off csm and make sure windows 8 or windows 8 whql is selected in the uefi
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Lordred
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/12/24 07:26:21
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His motherboard is x16/x16 2.0, but is showing x8 due to the card going un-used.
Going to go on a limb, have you updated your bios?
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mrkillersmile
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/12/25 17:43:11
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just a thought i wanna share, i had the same problem before and i managed to fix this myself. I even called evga support, they sent me bios update but all i get was a bad OC bios (yeah it's not working anymore after they tell me to run the bios update, my 680 classy now is running on LN2 bios or normal) but still no luck before, anyway...
remove/uninstall all the drivers thats loaded, after that reboot and try installing the 310.xx drivers if you're not seeing the sli option. After installing 310.xx driver reboot, this worked for me.
After changing mobo, cpu and os. I even tried 750, 850 and 1000 PSU and all that kind of stuff. and nothing worked until i remove all the drivers and install the 310.xx driver. Hope this work for you guys as well. Happy holidays!
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the_real_maverick
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/12/25 19:29:12
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I had this issue and it turned out to be a faulty PSU wire. Device manager showed two GPUs, but because it was only getting half the power due to a faulty power wire, I couldn't enable it in SLI. Just thought I would share that it could be a faulty power connection or wire.
Intel i7 6700K 4.0Ghz/ EVGA 980TI Classified / 16GB G.Skill DDR4 2400 / Gigabyte G1 gaming mobo / Western Digital Black 1 TB HDD/ Mushkin 1TB SSD / Corsair 750W PSU / 27" Asus ROG PG279Q IPS 1440 G-sync 165hz / Razer Deathadder / Logitech G810 Spectrum / Windows 10 64bit / K70 RGB  http://www.heatware.com/u/70338
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Baltothewolf
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2013/12/25 23:56:17
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milestm
Fiiiiiiiinnnnnnaaaaaaalllllllllyyyyyyy sorted this out and have SLI up and running!
Not the most elegant solution, and there is probably still something wrong with the board as it doesn't detect it natively, but HyperSLI 1.0 solved the issue for me. Installed it, rebooted, rebooted again and bingo, sweet, sweet SLI goodness all hooked up and working! Got the tip from the tweaktown Asrock forums when I copied this thread over.
Thanks again guys for trying to help out!
I would have suggested this, but your board does support SLI... So there probably is a problem with your board if that fixed it....
My Laptop (GE63VR-7RF): - 7700HQ. - 16GB RAM. - GTX 1070. - 128GB SSD.- 1X 1TB 7200 spinny drive. 
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debranamnenvartagna
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2014/12/31 08:27:14
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Hello there, I had exactly the same problem with my 2 graphic cards, but I found a solution after trying everything here.
You have your graphic cards in slot #1 and #3, same as I did.
Try to change so that they are precisely underneath eachother, slot #1 and 2.
It's something you normally don't think of, so if you haven't tried it, do try (I tried Hyper-Sli before that, but it gave me driver-crashes all the time.)
I hope that it works for you!
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bdary
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2014/12/31 08:30:28
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debranamnenvartagna
Hello there, I had exactly the same problem with my 2 graphic cards, but I found a solution after trying everything here.
You have your graphic cards in slot #1 and #3, same as I did.
Try to change so that they are precisely underneath eachother, slot #1 and 2.
It's something you normally don't think of, so if you haven't tried it, do try (I tried Hyper-Sli before that, but it gave me driver-crashes all the time.)
I hope that it works for you!
Hi and Welcome to the Forum...  I thought I'd point out in case you didn't notice, this thread is about a year old now...
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debranamnenvartagna
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2014/12/31 11:57:20
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Yes, but you never know, maybe he sees the mail and haven't fixed it yet :)
Anyways, thanks for the welcoming!
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PKBO173
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Re: No SLI option in NVIDIA Control Panel, cannot enable SLI - 2GB GTX670 FTW
2016/01/12 15:57:23
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Hi there, still have same problem with GTX 260, any ideas ? No showing SLI config to me, tried everything in this thread...
Got Z170-A
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