Hello,

will a newer chipset mainboard give me a speed

advantage to compute with two gpus on one mainboard ?

What will be the advantage ?

Thx.

The P35 chipset is not (much) faster than nForce 750i SLI. Both have only 1 PCIe x16 channel, so if you put 2 GPUs in one mainboard, both will run only at x8 with any of these chipsets.
If you want speed advantage, you need multiple native PCIe x16 slots, which will work at the x16 speed even if you populate all PCIe slots. Motherboards based on the Intel X38, X48 and nForce 780i SLI, 790i SLI chipsets, have 2 native PCIe 2.0 x16 slots.
You can achieve about 8-15% speed gain (depending on the WU type) compared to nForce 750i (or P35, P45) mainboards running with two GPUs

ok , i understand, that doesn´t worth it to upgrade.

But i can search for those boards in future time. Thx.

Hello, another question:

Can i get the same performance results, when

i overclock the PCIe frequency of the mainboard ?

Could u help ?

Do not overclock the PCIe frequency. PCIe does not tolerate overclocking. You can overclock it at most by 5%, but it may decrease the stability of the PCIe bus, which is crucial for GPUGrid tasks running for hours.

I have just overclocked my PCIe clocking on my SLI board.

Hopefully it won´t crash :)

I also see a rise in utilisiation on gpu activity , also in wattage as temperature, hopefully it won´t blow up.

I am watching it.

ok, absolutly no zero advantage by overclocking pcie bus frequency, what a mistake.

i change clockings immediatly.