dingo_boy99
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 02:17:05
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HeavyHemi
You can't use a 3-Way SLI bridge with one slot in between for 2-way SLI. The bridge isn't wired electrically for that. It will work with the GPU's adjacent to each other.
One of the longer flexible two-way bridges should work for you. One of these for example: http://www.amazon.com/Nvi...onnector/dp/B0025VT6LQ
You can verify that by taking a multimeter (or ohm meter) and reading out pin-to-pin. I've never attempted to use a 3-way bridge with an open connector in the middle, so I can neither confirm nor refute the above statement, but it seems that it should work electrically, based solely on the image, which shows solder joints exactly like the 2-way bridges + a 3rd set. Given that continuity exists from pin to pin on a 2-way, I don't see how it wouldn't on a 3-way, unless it relies on the center card to act as a jumper between the two sides; then again, I haven't found a reliable diagram of a 3-way SLI bridge. The ones I have found seem to indicate that the top-left connector has continuity to the center-left connector and the bottom-right connector, the center-right connector has continuity to the bottom-right connector, and the center-left connector has continuity to the top-right connector, which, unless SLI is connector-dependent (left/right, that is), it *should* work. So someone educate me. Why can't you use the 3-way SLI bridge when, electrically, it seems you should be able to? Is it the left/right thing?
i7-960 LGA1366 / MSI X58A-GD45 / 6GB RAM / SLI evga 560 Ti Crysis 2 Maximum Graphics Edition / 750W PSU / Viewsonic 27" VX2739WM @ 1920x1080 / 3TB across 2 spinning WDCblack drives / some 140mm fans, a couple 200mm / all stuffed in a CM HAF 912 chassis. And chicken.
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HeavyHemi
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 08:39:36
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dingo_boy99
HeavyHemi
You can't use a 3-Way SLI bridge with one slot in between for 2-way SLI. The bridge isn't wired electrically for that. It will work with the GPU's adjacent to each other.
One of the longer flexible two-way bridges should work for you. One of these for example: http://www.amazon.com/Nvi...onnector/dp/B0025VT6LQ
You can verify that by taking a multimeter (or ohm meter) and reading out pin-to-pin. I've never attempted to use a 3-way bridge with an open connector in the middle, so I can neither confirm nor refute the above statement, but it seems that it should work electrically, based solely on the image, which shows solder joints exactly like the 2-way bridges + a 3rd set. Given that continuity exists from pin to pin on a 2-way, I don't see how it wouldn't on a 3-way, unless it relies on the center card to act as a jumper between the two sides; then again, I haven't found a reliable diagram of a 3-way SLI bridge. The ones I have found seem to indicate that the top-left connector has continuity to the center-left connector and the bottom-right connector, the center-right connector has continuity to the bottom-right connector, and the center-left connector has continuity to the top-right connector, which, unless SLI is connector-dependent (left/right, that is), it *should* work.
So someone educate me. Why can't you use the 3-way SLI bridge when, electrically, it seems you should be able to? Is it the left/right thing?
EVGA X99 FTWK / i7 6850K @ 4.5ghz / RTX 3080Ti FTW Ultra / 32GB Corsair LPX 3600mhz / Samsung 850Pro 256GB / Be Quiet BN516 Straight Power 12-1000w 80 Plus Platinum / Window 10 Pro
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dingo_boy99
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 09:25:03
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I'm not sure if you're providing an image similar to what I described or educating me... if it's the latter, please explain what you're getting at if you don't mind. Along the lines of what I described, the below image shows the top card talking to the bottom card. Are you saying that, without the middle card, the connection between the top/bottom cards isn't allowing them to 'talk' to each other? 
i7-960 LGA1366 / MSI X58A-GD45 / 6GB RAM / SLI evga 560 Ti Crysis 2 Maximum Graphics Edition / 750W PSU / Viewsonic 27" VX2739WM @ 1920x1080 / 3TB across 2 spinning WDCblack drives / some 140mm fans, a couple 200mm / all stuffed in a CM HAF 912 chassis. And chicken.
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dingo_boy99
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 09:29:40
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Additionally, the evga Pro SLI bridges specifically state they can be used for 2-way SLI in that configuration:
Introducing the EVGA Pro SLI Bridges. These bridges are designed to look awesome and connect your SLI enabled EVGA graphics cards together. If you have a TITAN, 780 or select 770 series graphics cards the EVGA logo illuminates!
- Supports 3-Way SLI and and 2-Way SLI (with 2 slot spacing on double width graphics cards). Please see this thread for more details.
- EVGA logo illuminates on GeForce GTX TITAN, 780 and select 770 series.
- Compatible with all SLI enabled graphics cards.
- Looks awesome!
- Each SLI finger is spaced 40mm apart.
Keep in mind, I'm not trying to say "neener neener, I'm right" - I'm genuinely trying to get educated on this, because I do not have a 3-way bridge to ohm out. I suppose the easiest way is to buy a 3-way bridge...
i7-960 LGA1366 / MSI X58A-GD45 / 6GB RAM / SLI evga 560 Ti Crysis 2 Maximum Graphics Edition / 750W PSU / Viewsonic 27" VX2739WM @ 1920x1080 / 3TB across 2 spinning WDCblack drives / some 140mm fans, a couple 200mm / all stuffed in a CM HAF 912 chassis. And chicken.
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Marcus Anthony
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 10:22:19
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HeavyHemi
dingo_boy99
HeavyHemi
You can't use a 3-Way SLI bridge with one slot in between for 2-way SLI. The bridge isn't wired electrically for that. It will work with the GPU's adjacent to each other.
One of the longer flexible two-way bridges should work for you. One of these for example: http://www.amazon.com/Nvi...onnector/dp/B0025VT6LQ
You can verify that by taking a multimeter (or ohm meter) and reading out pin-to-pin. I've never attempted to use a 3-way bridge with an open connector in the middle, so I can neither confirm nor refute the above statement, but it seems that it should work electrically, based solely on the image, which shows solder joints exactly like the 2-way bridges + a 3rd set. Given that continuity exists from pin to pin on a 2-way, I don't see how it wouldn't on a 3-way, unless it relies on the center card to act as a jumper between the two sides; then again, I haven't found a reliable diagram of a 3-way SLI bridge. The ones I have found seem to indicate that the top-left connector has continuity to the center-left connector and the bottom-right connector, the center-right connector has continuity to the bottom-right connector, and the center-left connector has continuity to the top-right connector, which, unless SLI is connector-dependent (left/right, that is), it *should* work.
So someone educate me. Why can't you use the 3-way SLI bridge when, electrically, it seems you should be able to? Is it the left/right thing?
Thanks for the graph! Everything WORKS when i bridge like this> Top card gets up to 79 degrees @ load because it can't breathe  And again i can confirm this doesn't work..  I AM DISAPPOINT!
post edited by Marcus Anthony - 2014/11/16 10:29:27
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Sajin
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 14:21:07
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HeavyHemi
You can't use a 3-Way SLI bridge with one slot in between for 2-way SLI. The bridge isn't wired electrically for that. It will work with the GPU's adjacent to each other.
One of the longer flexible two-way bridges should work for you. One of these for example: http://www.amazon.com/Nvi...onnector/dp/B0025VT6LQ
Works just fine when running just two of my titans. Looks like it doesn't work with the 970/980's.
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dingo_boy99
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 19:24:34
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Sajin
Works just fine when running just two of my titans. Looks like it doesn't work with the 970/980's.
I'm wondering if he has either a bad SLI bridge or a bad connector on one of the cards... @Marcus - if you put the cards side-by-side again and use a single bridge (assuming you have one you can use), does it work on either set of connectors on the video cards? What motherboard is that?
i7-960 LGA1366 / MSI X58A-GD45 / 6GB RAM / SLI evga 560 Ti Crysis 2 Maximum Graphics Edition / 750W PSU / Viewsonic 27" VX2739WM @ 1920x1080 / 3TB across 2 spinning WDCblack drives / some 140mm fans, a couple 200mm / all stuffed in a CM HAF 912 chassis. And chicken.
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Marcus Anthony
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Re: Advice on getting GTX 970 SLI to work?
2014/11/16 19:32:50
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dingo_boy99
Sajin
Works just fine when running just two of my titans. Looks like it doesn't work with the 970/980's.
I'm wondering if he has either a bad SLI bridge or a bad connector on one of the cards...
@Marcus - if you put the cards side-by-side again and use a single bridge (assuming you have one you can use), does it work on either set of connectors on the video cards?
What motherboard is that?
: / Just a bunch of long crossfire ones laying around. I did install the 344.48 driver and things have been alot better since. Can get the Sli to work properly now on Shadow of Mordor & bf4. No go yet for Evil within. I'll post what the new bridge does once it arrives this week and i separate the cards and connect that bad boy. But am guessing with the 3way connecter am currently using it simply wont allow me to separate them because i do have 1 other just like it laying around and nither worked when i tired with the cards separated. Thanks for the help guys. Anyone post Valley 1.0 bench marks?
post edited by Marcus Anthony - 2014/11/16 19:35:07
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RINOLHODGE
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Re: Advice on getting GTX 970 SLI to work?
2015/06/08 12:47:14
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evga gtx 970 acx 2.0 and gigabyte g1 gaming gtx 970 wont sli, why
using asus maximus 7 formula mobo
i7 4790k
crucial 32 gb ram
intel 530 ssd in raid zero
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Marcus Anthony
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Re: Advice on getting GTX 970 SLI to work?
2015/06/08 14:37:22
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Is both cards at least showing up in the nvidia panel? Are you sure ur sli connector isn't defective? Check to ensure both cards are powered up. Last but not least use driver sweeper and removal all display drivers of any sort and rebot.. Install a fresh copy of the latest driver release for ur card and rebot again and see what u get..
post edited by Marcus Anthony - 2015/06/08 14:39:41
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RINOLHODGE
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Re: Advice on getting GTX 970 SLI to work?
2015/06/08 15:08:20
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yes does show up OK DID EVERYTHING YOU SAID BUT FROM MY UNDERSTANDING ITS A MUTE AS THESE GPU WILL NEVER SLI. IT SEEM WHEN SLI A GTX 970 FROM DIFFERENT MANUFACTURES THEY NEED TO BE OF SAME TYPE- I.E SAME AMOUNT OF DISPLAY PORTS, HDMI, AND DVI CONNECTION. YOU CANT FLASH BIOS FROM A DIFFERENT GPU EITHER SO NOW SOME NEED TO TELL THIS TO THE WORLD. LOL. EXCUSE THE CAPS.
post edited by RINOLHODGE - 2015/06/09 19:10:51
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Marcus Anthony
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Re: Advice on getting GTX 970 SLI to work?
2015/06/08 15:12:18
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Ok.. then complete that final step. Display driver removal, rebot, install lastest gpu driver, rebot
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