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post #31 of 93
Looking around the internet, some people say that one GTX690 won't be bottlencked by 2.0 x8, but two will. Now does that mean the power of two gtx 690s stack up on the pci-E lanes?

Although, if it was me, I'd get an IVY cpu asap to run with your two $1000 cards just to get the 8x 3.0 speeds at the very least. I hope you solve the issue.
    
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post #32 of 93
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

Looking around the internet, some people say that one GTX690 won't be bottlencked by 2.0 x8, but two will. Now does that mean the power of two gtx 690s stack up on the pci-E lanes?

Although, if it was me, I'd get an IVY cpu asap to run with your two $1000 cards just to get the 8x 3.0 speeds at the very least. I hope you solve the issue.

I wanna get the most out of my purchases but I'll have to do a little research about that first. I cant see specs talking about PCI-E 2.0 or 3.0 on either of intel's 2700k or 3970k. Now after all this trouble shooting.....I have a new problem or the old problem is evolving. now with both cards in and quad sli enabled, i get really bad screen shakes from left to right. However, it's only when gaming. desktop and youtube video works fine. its as if there is an earthquake. i can make out that framerates haven't gotten any better or worse.

I swamped cards to confirm that individually, they have identical performance, and neither causes the shaking on their own. I reverted back to the non beta driver 314.07 to see, and it still shakes

Im really starting to believe that the psu is starting to show fatigue with dual 690's......1000w bronze certified from rosewill may just not be cutting it. According to asus tool/calculator on their site......i should have a 1350watt psu. I wanted to borrow a friends 850ax just to run my cards seperatly today for a test, however poor guy got a doa.....frown.gif thinking about grabbing a
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post #33 of 93
I run an AX650 with my 3970x and gtx690. I've had my 3970x up to 5.3GHz with 1.688v and my gtx 690 @1200MHz on this psu. I'm sure your Rosewill is fine. It's definately enough for your rig and then some.
    
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post #34 of 93
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

I run an AX650 with my 3970x and gtx690. I've had my 3970x up to 5.3GHz with 1.688v and my gtx 690 @1200MHz on this psu. I'm sure your Rosewill is fine. It's definately enough for your rig and then some.

your set-up is pretty sick to say the least. Its just that everything was pushing farcry 3 with absolutely no issues and smooth as butter for about a week. then it started to act up afterwards. Since everything was running it fine together at one point, i have a hard time pointing the finger at 1 component.

I noticed I have 1/4 8pins plugs that are (NOT) pci-e and come from the rail for the motherboard i guess. Could that be pulling juice away from the board and causing the issue or is it all the same?

I think I'm gonna throw back in my pair of 580's and see how it runs in sli.
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post #35 of 93
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

Looking around the internet, some people say that one GTX690 won't be bottlencked by 2.0 x8, but two will. Now does that mean the power of two gtx 690s stack up on the pci-E lanes?

Although, if it was me, I'd get an IVY cpu asap to run with your two $1000 cards just to get the 8x 3.0 speeds at the very least. I hope you solve the issue.

I have found some info on intel as well as nvidia forums and it seems that you are on key. 2 gtx690's may get bottled by a motherboard running at Pci-e 2.0. I have a friend that would love to buy my 2700k and then i guess i could grab a 3770k to at least keep my new motherboard. I told myself that next cpu would be a 6 core but i just payed 400 for my new board becuase i wanted a pci-e 3 compatable board since i had ordered my first gtx 690. I wasn't aware until u had mentioned that the cpu needed to be 3.0 compatible as well. Your 3790 looks like a monster though....maybe next build intel will be rocking an eight core. Thanks for your input, I am still puzzled by the initial performance being so good.....but. I was playing on 1 card earlier with farcry 3 and it was very solid. no more low fps and 2 cards seems be the issue.

thanks for your help
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post #36 of 93
Quote:
Originally Posted by MrTOOSHORT View Post

Possibly. I'm not sure if pci-E 2.0 8x would bottleneck a GTX 690.

A 690 wouldn't even be bottlenecked by 2.0 X4
Quote:
Originally Posted by JimmyD View Post

I have found some info on intel as well as nvidia forums and it seems that you are on key. 2 gtx690's may get bottled by a motherboard running at Pci-e 2.0. I have a friend that would love to buy my 2700k and then i guess i could grab a 3770k to at least keep my new motherboard. I told myself that next cpu would be a 6 core but i just payed 400 for my new board becuase i wanted a pci-e 3 compatable board since i had ordered my first gtx 690. I wasn't aware until u had mentioned that the cpu needed to be 3.0 compatible as well. Your 3790 looks like a monster though....maybe next build intel will be rocking an eight core. Thanks for your input, I am still puzzled by the initial performance being so good.....but. I was playing on 1 card earlier with farcry 3 and it was very solid. no more low fps and 2 cards seems be the issue.

thanks for your help

If someone told you that a 690 is bottlenecked by X8 2.0 then they have no idea what the hell they are talking about.


Edited by Stay Puft - 3/5/13 at 7:25am
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post #37 of 93
Thread Starter 
@stay puft
Not a single 690 i know, I'm getting good results with 1, but its when i add the second card things get worse. I've tried each cards individually and they run identical. Last night i got some odd screen shakes and even blackouts a couple times when running in quad???? that was a first for that. In case you didn't notice, i stated earlier that 1 of my 8pin connectors isn't a pci-e express plug but is a motherboard 8 pin......Do you think that may have something to do with my issues, or an 8 pin is an 8 pin??? maybe its draining power away from the cpu/motherboard to feed the card??? im no expert just flapping my gums.

found some info stating that games that are cpu heavy won't see much advantages of 3.0 but gpu intensive games will. Also your chart is very interesting showing very little gains from 1.1 to 2.0 to 3.0. you seem to know more about this than me, but that's for a single 680 but I'm technically trying to run 4 of them.....so would that change anything? what do you think?

until i solve my issue i guess anything is possible.
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post #38 of 93
Thread Starter 
So here's some other test I've just finished running

Single gtx 690 runs fairly good on all games.......
dual gtx 690's with quad enabled ran great at first until about 4 days ago, then followed by screen shaking during gaming (horizontal) very odd

replaced by my old gtx 580's

Single gtx 580 runs good with about half the performance of the 690 as expected
Dual gtx 580s in sli almost doubles the performance of one but then i get a sort of red tinted screen that flashes as long as sli is enabled......i can duplicate the issue every time by enabling sli very much the same as when i activate quad sli with the 690's but get a wobbling screen instead of the sort of red tinted flashing thing.

i tried 2 different sli bridges
i tried both the 314.07 driver as well as 314.14 beta
I had both configurations of cards in pcie slot 1 & 2b as per asus' guide that came with the board.

i'm starting to suspect the board but i don't know anymore


Edited by JimmyD - 3/5/13 at 9:31am
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post #39 of 93
Without reading everything and stating the obvious, 8x per GPU is ok however its dual GPU per card so 4x per card. Even 4x per card in pci-e 3.0 mode is not enough bandwidth. Board upgrade to a unit with added lanes or a system upgrade to X79 will be required here. In house testing at OcUK has shown its possible but the loss of performance is too high unless the above is adhered to.
post #40 of 93
Quote:
Originally Posted by Andrew Moore View Post

Without reading everything and stating the obvious, 8x per GPU is ok however its dual GPU per card so 4x per card. Even 4x per card in pci-e 3.0 mode is not enough bandwidth. Board upgrade to a unit with added lanes or a system upgrade to X79 will be required here. In house testing at OcUK has shown its possible but the loss of performance is too high unless the above is adhered to.

doh.gif

Where do you people come from? Look 4 posts up
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