6950 crossfire + 1 pci-e riser = bsod boot problems

[samcool55]

Hello,

 

I have some weird issues with my new config, i have 2 6950's in my rig that worked perfectly. until...

I bought a pci-e riser to place my second 6950 outside the case to get better temps.

Now i have a lot of issues keeping it working. Everything worked without the pci-e riser.

I have also the iGPU enabled, that's a must, i have 2 screens connected to that.

Now i managed to get it working twice, but after a reboot i get a bsod after the windows starting screen.

So i know it can work, but i can't keep it working.

What i tried: reinstall windows 7 (twice)

If the pc gets a bsod, it works again if i completely disconnect the secondary card with the riser.

 

I can't figure out why it can work, but dies after a reboot..

Trying now with different AMD drivers.

Does some1 know what else i can try?

Going to try different bios combinations too.

[Marvzl1357]

-snip-

What it might be is that the pci-e riser has a faulty connection somewhere and the computer can't handle the sudden loss of a connection. *how long is the riser?

Why not just leave it in the case and find a way to get better airflow through the case?

btw what case is it?

[samcool55]

It's an antec 1200, the problem i have is that it is the directCUII cooler from asus, both of them. And the top card reaches during gaming 100°C and starts throtteling, when it worked i tried some stresstesting and the top card was about 80°C and the fan was a lot quieter, so it solves it, i have been thinking about watercooling but i already have a H100i and the case isn't that great for watercooling, and it's expensive, so i didn't want to do that either.

Tried a lot of things with airflow, i had a fan against the gpu's but that didn't help a lot, tried push and pull.

The pci riser is ~20cm. But i'm not sure why it would be faulty, i got it working twice and it was completely stable, stress test, gaming, it kept working no problem. It's only when i boot it makes trouble.

[Xquisite]

It's very likely that your PCI-E Riser is faulty. Or it has a problem with the connection. 

[Marvzl1357]

It's an antec 1200, the problem i have is that it is the directCUII cooler from asus, both of them. And the top card reaches during gaming 100°C and starts throtteling, when it worked i tried some stresstesting and the top card was about 80°C and the fan was a lot quieter, so it solves it, i have been thinking about watercooling but i already have a H100i and the case isn't that great for watercooling, and it's expensive, so i didn't want to do that either.

Tried a lot of things with airflow, i had a fan against the gpu's but that didn't help a lot, tried push and pull.

The pci riser is ~20cm. But i'm not sure why it would be faulty, i got it working twice and it was completely stable, stress test, gaming, it kept working no problem. It's only when i boot it makes trouble.

hmmm well what I would say is get a fan that can 'throw' its air a  far distance, especially silverstone ap123, as intake to ensure you're really getting the air in there to the gpu's

And when you say you put a fan next to the gpu, I assume you mean you put it on the fan mount on the side panel right? because if you didn't it would just circulate the hot air over and over again and end up being totally useless.

btw, quote who you're replying to next time

[samcool55]

hmmm well what I would say is get a fan that can 'throw' its air a  far distance, especially silverstone ap123, as intake to ensure you're really getting the air in there to the gpu's

And when you say you put a fan next to the gpu, I assume you mean you put it on the fan mount on the side panel right? because if you didn't it would just circulate the hot air over and over again and end up being totally useless.

btw, quote who you're replying to next time

 

It was right next to the gpu, that's the only choice i had. I had it on top of my psu and tried push and pull but it wasn't enough, the fan mount in the sidepanel is removed because the h100i's tubing is blocking it.

I had to reinstall my pc again, it completely died, even startup recovery was broken... bsod's completely kill OS.

 

EDIT: tried to install w8, not possible with both cards connected, pc shuts down when it tries to boot after the cd part of the setup.

I have 1 card connected and it works now, does any1 know how the secondary card can have an effect on the w8 setup? I can install w7 in the exact same situation.

 

EDIT2: pci-e riser is indeed not good, removed it and system worked fine instantly. I will have to find another solution for my heat issue then.