Ah, that's what you meant. Now I understand. Still, I don't know if that would work in this case. It's true that removing a 0402 resistor is easier than soldering it (good luck with that ), but my solution is non-destructive. I can always remove the 33K resistor (1206 btw) and the card will be a GTX780 again, whereas adding the 25K resistor back on the board would be harder
Can you post a photo of your mod showing exactly where you put the 33K resistor?
And why do you think removing the 3rd nibble resistor wouldn't work in this case? It works on the GTX680 and GTX690 I have. You mean it might upset the voltage somewhere else and cause unrelated straps to end up with wrong values? Surely adding a pull-down resistor in addition to the pull-up would run the same risk of doing that.
Note: I'm not disputing that dealing with a 1206 is far preferable than dealing with an 0402, especially without specialist tools.
There is also another difference. The 25K resistor is a pull-down resistor, and I added a pull-up resistor. The lines that go to the GPU most likely have an ADC that measures the voltage and based on that it sets certain straps. I had also removed the 28.5K resistor and let me tell you, that one had to be precise! It will not boot with a value of 28K or 29K
Which 28.5K resistor? What was it for?
what I was saying. the K10 tesla is the quadro grid K2 - features like software-ecc and vgx support on both. Just strap them and go.
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I'm hunting VGX since it is better than API-intercept. I think I agree with Gordan. VGX is more like "VT-d" for video cards, alone it won't do squat but it will work with nvidia's VGPU API to accelerate much faster than pure binary translation mode (API intercept)
I'm not sure I follow what this would be for.
1) Why do you need ECC for graphics rendering and video stream encoding?
2) I'm pretty sure VGX requires no special features at all. vDGA is just straight PCI passthrough a-la Xen. vSGA just makes the GPU act as a co-processor. I'm going to try putting together an ESXi test bed machine with a spare motherboard I have which I _think_ has a non-broken IOMMU with the required features for ESXi PCI passthrough, and try and get my Gridified 690 working on it. If that works, it would prove you need no special features on the GPU itself to make it work.
It will also be good to hear back from foxdie when he has had a chance to test the Quadrified GTX470 with vSGA. If that works, the chances are that other modified cards will, too.