that happens when you merge computers on the GPUGrid site

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XtremeSystems.org - #1 Team in GPUGrid

that happens when you merge computers on the GPUGrid site

After I got 3rd card working that is exactly what I did.
Thanks

I've been semi-corrected elsewhere, so just wanted to correct the information I gave here in an effort not to confuse anyone who might read this thread.

The resource limitation with "lanes" and the like with CPUs is only a factor when trying to run four GTX 690s.

Apparently the GTX 590 is not such a resource hog and can be run four at a time.

That would mean it IS possible to run four, double-GPU cards in one system, just not four GTX 690s which are resource hogs. I have no idea what the "extra" burden a GTX 690 places on a system that a GTX 590 does not. DMA channels? Interrupts?

I don't know and don't know where to look.

I hope my previous comment hasn't mislead anyone.

I've been semi-corrected elsewhere, so just wanted to correct the information I gave here in an effort not to confuse anyone who might read this thread.

The resource limitation with "lanes" and the like with CPUs is only a factor when trying to run four GTX 690s.

Apparently the GTX 590 is not such a resource hog and can be run four at a time.

That would mean it IS possible to run four, double-GPU cards in one system, just not four GTX 690s which are resource hogs. I have no idea what the "extra" burden a GTX 690 places on a system that a GTX 590 does not. DMA channels? Interrupts?

I don't know and don't know where to look.

I hope my previous comment hasn't mislead anyone.

Actualy why 4x690 not work is nothing related to the CPU/MB is related to the windows itself but that limitation is only in place due the way the 690 works, 3x690+590 actualy works (or any other combination of 4 GPU´s), so actualy you could run up to 8 GPU´s on a single host as a theorical maximum. But of course you need to have the PSU, a way to cool, a fast CPU and a top of the class MB to feed this monster.

Probabily (i don´t know one who try) 4x690 could work on Linux or other OS.

The information about that is very limited and hard to find, and yes even with the help of a new bios from NVidia the 4x690 not works, and one warning, the mate who try needs to send back to NVidia his 690... for repairs...

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We build machines with the following spec:

4xGTX680
Asus P9X79WS motherboard
Xeon E5 1620
16GB RAM
1500W Silverstone PSU
2TB hard disk.

We've our own custom case.

MJH

Question: How do you (or anyone) get the bottom card to fit? I have several different models of these "4x dual wide GPU boards", and they all have the same flaw: They put a lot of headers under the space of the 4th double-wide GPU. And so you can't push the GPU down into the PCIe slot without crushing the cables plugged into those headers.

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Reno, NV
Team: SETI.USA

Question: How do you (or anyone) get the bottom card to fit?

We only connect power and LED switches. The flying leads are bent sharply but do fit. See:

https://www.youtube.com/watch?v=0FIRG6H0sSI


MJH

We build machines with the following spec:

4xGTX680
Asus P9X79WS motherboard
Xeon E5 1620
16GB RAM
1500W Silverstone PSU
2TB hard disk.

We've our own custom case.

MJH

Question: How do you (or anyone) get the bottom card to fit? I have several different models of these "4x dual wide GPU boards", and they all have the same flaw: They put a lot of headers under the space of the 4th double-wide GPU. And so you can't push the GPU down into the PCIe slot without crushing the cables plugged into those headers.

FWIW maybe one could buy a couple of these and experiment with removing the cables and cutting down the plastic and pins so they don't stick up so high. Just a thought.

Ah. That explains it. Thanks!

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Reno, NV
Team: SETI.USA