bournesto33
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Good evening guys, I have two evga GTX 970's with a SLI bridge, however SLI always says disabled.  Now both cards are identified in MSI afterburner...What do you you all think?  Any help would be great, also my BIOs are updated and support SLI Setup i-7 4790 CPU 16 gigs DDR3 two GTX 970 SSC 64bit
post edited by bournesto33 - 2017/04/16 15:22:50
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Cool GTX
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Re: SLI disabled, wont enable
2017/04/16 16:13:07
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Welcome to the Forums bournesto33
Lets see what I can find. I think some of the 970 might of had limited SLI compatibility - not sure
Which 970 model numbers do you have / are the both the same?
What MB ?
What SLI bridge are you using / have a spare for testing / maybe one came with your MB ?
Are you following the MB "SLI - population Rules" ? (using the recommended Slots for 2-way SLI)
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Tech_RayH
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Re: SLI disabled, wont enable
2017/04/16 16:15:32
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This can indicate an issue with one of the two cards. I would recommend testing the two cards individually in games or benchmarks to see if one card has issues that the other does not (crashing, black screens, etc). Are both cards the exact same model, and did the SLI work previously?
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Cool GTX
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Re: SLI disabled, wont enable
2017/04/16 16:20:49
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Why is there no SLI option in Nvidia Control Panel? FAQ ID # 59400 Does not seem to be an issue if they are both 970 SSC - GTX 970 and SLI functionality. FAQ ID # 59534
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bournesto33
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Re: SLI disabled, wont enable
2017/04/16 17:12:18
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Cool GTX
Welcome to the Forums bournesto33
Lets see what I can find. I think some of the 970 might of had limited SLI compatibility - not sure
Which 970 model numbers do you have / are the both the same?
I thought they were the same, but this is what I got
GPU1
________________________________________________________________________________
Display device : GeForce GTX 970 on GM204-A GPU
Display driver : 381.65
BIOS : 84.04.36.00.72
GUID : VEN_10DE&DEV_13C2&SUBSYS_39753842&REV_A1&BUS_1&DEV_0&FN_0
Multi-GPU role : synchronized with master
Registry key : \Registry\Machine\System\CurrentControlSet\Control\Video\{A67C2C70-11E6-4DE7-B812-213BC2EA8F21}\0000
VDDC controller : Display driver
GPU2
________________________________________________________________________________
Display device : GeForce GTX 970 on GM204-A GPU
Display driver : 381.65
BIOS : 84.04.31.00.70
GUID : VEN_10DE&DEV_13C2&SUBSYS_39793842&REV_A1&BUS_2&DEV_0&FN_0
Multi-GPU role : master
Registry key : \Registry\Machine\System\CurrentControlSet\Control\Video\{ED4F696C-4CDD-4488-B4E7-E7D4227FFF96}\0000
VDDC controller : Display driver
What MB ?
sabertooth z97
What SLI bridge are you using / have a spare for testing / maybe one came with your MB ?
asus, the one that came with my mobo
Are you following the MB "SLI - population Rules" ? (using the recommended Slots for 2-way SLI)
no, where would i find that?
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bournesto33
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Re: SLI disabled, wont enable
2017/04/16 17:18:21
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Btw thank you for welcoming to the fourms
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Cool GTX
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Re: SLI disabled, wont enable
2017/04/16 17:27:40
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JosephL
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Re: SLI disabled, wont enable
2017/04/16 17:30:51
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bournesto33
GPU1
________________________________________________________________________________
Display device : GeForce GTX 970 on GM204-A GPU
Display driver : 381.65
BIOS : 84.04.36.00.72
GUID : VEN_10DE&DEV_13C2&SUBSYS_39753842&REV_A1&BUS_1&DEV_0&FN_0
Multi-GPU role : synchronized with master
Registry key : \Registry\Machine\System\CurrentControlSet\Control\Video\{A67C2C70-11E6-4DE7-B812-213BC2EA8F21}\0000
VDDC controller : Display driver
GPU2
________________________________________________________________________________
Display device : GeForce GTX 970 on GM204-A GPU
Display driver : 381.65
BIOS : 84.04.31.00.70
GUID : VEN_10DE&DEV_13C2&SUBSYS_39793842&REV_A1&BUS_2&DEV_0&FN_0
Multi-GPU role : master
Registry key : \Registry\Machine\System\CurrentControlSet\Control\Video\{ED4F696C-4CDD-4488-B4E7-E7D4227FFF96}\0000
VDDC controller : Display driver
This doesn't show the model number. The format should be like this: 04G-P4-XXXX-KR if they are both EVGA 970's. Let us know if you are able to locate these model numbers so we can check compatibility for you.
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sebastiantjfisher
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Re: SLI disabled, wont enable
2017/04/16 17:38:02
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I've experienced similar if the two cards are not in the right PCIe slots. Windows will even suggest enabling SLI, but you can't.
The motherboard manual should suggests the optimal two slots to use.
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bcavnaugh
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Re: SLI disabled, wont enable
2017/04/16 18:10:07
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Could the difference in the Bios cause this SLI Issue? 84.04.31.00.70 84.04.36.00.72 Have you reversed the SLI Bridge? Also move the SLI Bridge to the Other SLI Forks and test.
post edited by bcavnaugh - 2017/04/16 18:15:47
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JosephL
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Re: SLI disabled, wont enable
2017/04/16 18:13:06
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The BIOS should not have any effect in SLI compatibility. Generally the BIOS updates are used to address specific issues but should not break SLI.
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bournesto33
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Re: SLI disabled, wont enable
2017/04/16 20:09:45
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one of the cards is 04G-P4-3975-KR, the other I can only make out 3979-kb,
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bournesto33
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Re: SLI disabled, wont enable
2017/04/16 21:08:23
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What I have done so far, I took out the both cards, tried both individually, both worked fine. Updated drivers on one because it needed it (newest one I bought) redid everything and still getting the same screen. I have a new SLI bridge coming in tommarow, I hope that works....also here are the numbers for the cards
post edited by bournesto33 - 2017/04/16 21:49:50
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bcavnaugh
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Re: SLI disabled, wont enable
2017/04/16 21:17:04
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bournesto33
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Re: SLI disabled, wont enable
2017/04/16 21:49:33
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Sorry if u could delete the pic and I'll delete my post
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bournesto33
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Re: SLI disabled, wont enable
2017/04/16 22:38:25
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What can I do with the other card now?
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XrayMan
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Re: SLI disabled, wont enable
2017/04/16 22:49:06
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bournesto33
one of the cards is 04G-P4-3975-KR, the other I can only make out 3979-kb,
If it's KB, then that one was bought at Best Buy. A BB exclusive. The other one was not purchased at BB. You sure the specs of both cards are exactly the same? Best Buy cards are usually slightly different. I wouldn't Sli those two together.
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bob16314
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Re: SLI disabled, wont enable
2017/04/17 02:25:28
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It seems clear to me that your 970's will not SLI because a 3975 is not SLI compatible with a 3979, no matter how many bridges you try..Only cards with part numbers in the same column in the compatibility list (as previously mentioned) will SLI together. You need to return/exchange one of the cards somehow and get/buy one that's compatible with the other in the list..The card with a -KB warranty suffix is a card from Best Buy, as stated above..You can contact EVGA Support and see what they suggest and if they will help you out any. If you're in a pinch, you can try the DifferentSLIAuto tool v1.4 to patch the graphics driver which may allow you to SLI cards that are normally not SLI compatible..The instructions for installing DifferentSLIAuto are included in the download..Me, I would try the tool right now just for kicks to see if/how it works.
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