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SLI Crashing - Page 3

post #21 of 61
Quote:
Originally Posted by Manyak View Post
Correct. Only when running a 3D app, and only when SLI is enabled.

I TRIED to stress them simultaneously, but can't seem to figure out how to do it. No matter what screen I move a 3D window to it always uses the primary card for rendering.
So, you did not do anything hardware wise to the PC. How about software wise? Any (auto) Windows Updates...etc?

Try this for a quick stress:
1. disable SLI in NVCP and select one of the 2 cards to render Physx
2. run Mafia II Demo benchmark with Physx set to High
The main card will be stressed well and the Dedicated Physx card will be stressed to 60-80%.
3. repeat again after switching roles of the 2 cards
post #22 of 61
Quote:
Originally Posted by Manyak View Post
Ok there's no option in my BIOS to disable auto restart....and now that I think of it it doesn't matter anyway since the computer just freezes completely, it doesn't restart. It gives a blank screen for a while, and about 30 seconds later the monitors go into power save mode.

@s3v3n: yes the very first thing I tried was disabling all my OCs. Like I said, this is even happening on a brand new reformat with the latest drivers. And both cards seem to work fine when only one of them is being used (I'd select one as main in software, not physically disconnect anything).


Somewhere around my GPU experience is telling me that there is not enough power flowing in those GPUs. I'm thinking maybe the stock voltage is not enough when those specific cards run in SLI.


Did you try changing the core voltage one notch up (without changing clock, shader and memory) and enable SLI?
post #23 of 61
I had the same exact problem, what fixed it for me was that my 2nd+4th ramslot was bad, so i switched to 1st+3rd ramslot and it fixed my problems.
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post #24 of 61
Thread Starter 
Quote:
Originally Posted by windfire View Post
So, you did not do anything hardware wise to the PC. How about software wise? Any (auto) Windows Updates...etc?

Try this for a quick stress:
1. disable SLI in NVCP and select one of the 2 cards to render Physx
2. run Mafia II Demo benchmark with Physx set to High
The main card will be stressed well and the Dedicated Physx card will be stressed to 60-80%.
3. repeat again after switching roles of the 2 cards
Software changes are now irrelevant because I'm working off a clean reformat on a spare HDD.

And I'm downloading the demo right now.

Quote:
Originally Posted by _s3v3n_ View Post
Somewhere around my GPU experience is telling me that there is not enough power flowing in those GPUs. I'm thinking maybe the stock voltage is not enough when those specific cards run in SLI.


Did you try changing the core voltage one notch up (without changing clock, shader and memory) and enable SLI?
My first guess was actually the PSU but I don't have another one this large to test it with.

Let me try the voltage tweak after the mafia benchmark.
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post #25 of 61
Thread Starter 
Results of the Mafia II benchmark:

Test 1: GPU1 rendering @ 2560x1600, GPU2 physx on high: FAIL
Test 2: GPU1 rendering @ 2560x1600, GPU2 idle: SUCCESS
Test 3: GPU1 idle, GPU2 rendering @ 1680x1050: SUCCESS
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post #26 of 61
Quote:
Originally Posted by Manyak View Post
Results of the Mafia II benchmark:

Test 1: GPU1 rendering @ 2560x1600, GPU2 physx on high: FAIL
Test 2: GPU1 rendering @ 2560x1600, GPU2 idle: SUCCESS
Test 3: GPU1 idle, GPU2 rendering @ 1680x1050: SUCCESS
HX1000 has 1 pair of native 6(+2)-pin PCIe connectors. I think you are using them for the GPU1.
And I suppose you are using a pair of modular 6-pin PCIe connectors for the GPU2.
Repeat the above tests by switching these 2 pairs of cables.
This test might be revealing.
(It is getting late at night and I need to rest. Hopefully the problem will be solved soon)

Edited by windfire - 3/25/11 at 8:46am
post #27 of 61
Quote:
Originally Posted by windfire View Post
HX1000 has 1 pair of native 6(+2)-pin PCIe connectors. I think you are using them for the GPU1.
And I suppose you are using a pair of modular 6-pin PCIe connectors for the GPU2.
Repeat the above tests by switching these 2 pairs of cables.
This test might be revealing.
(It is getting late at night and I need to rest. Hopefully the problem will be solved soon)
After reading the first post, this was going to be my suggestion as well.

If it still does the black screen freezes, try disabling the HD audio drivers:

http://www.evga.com/forums/tm.aspx?m=586183
     
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post #28 of 61
Thread Starter 
Quote:
Originally Posted by windfire View Post
HX1000 has 1 pair of native 6(+2)-pin PCIe connectors. I think you are using them for the GPU1.
And I suppose you are using a pair of modular 6-pin PCIe connectors for the GPU2.
Repeat the above tests by switching these 2 pairs of cables.
This test might be revealing.
(It is getting late at night and I need to rest. Hopefully the problem will be solved soon)
Actually I have it hooked up like this:

Native 1 -> GPU1
Native 2 -> GPU2
12v1 -> GPU1
12v2 -> GPU2

And then the CPU connectors are the native 8 pin and 12v1 modular.

And please don't let me keep you up, go get your sleep
Edited by Manyak - 3/25/11 at 8:58am
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post #29 of 61
Thread Starter 
Quote:
Originally Posted by covertash View Post
After reading the first post, this was going to be my suggestion as well.

If it still does the black screen freezes, try disabling the HD audio drivers:

http://www.evga.com/forums/tm.aspx?m=586183
The onboard sound is completely disabled in BIOS.
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post #30 of 61
Quote:
Originally Posted by Manyak View Post
The onboard sound is completely disabled in BIOS.
Haha, the HD audio is for the video cards themselves for the HDMI audio, not the motherboard. If you look during the Nvidia driver installation, one of the components installed is for the audio drivers. The link above will show you how to disable them permanently and hopefully alleviate the blackscreen issues.
     
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