Does the quality of the motherboard affect the overclocking headroom of the GPU?

[Hi-Tech]

Do you think buying an expensive motherboard for overclocking is a smart investment?

[Haro]

the board wont affect the gpu for the most part. 

[vanished]

I can't imagine it would have any impact at all.  The video card is basically a self-contained system consisting of an equivalent of the motherboard+CPU+RAM, if you'd like to think of it that way.  Now, different cards using the same GPU will overclock better or worse (or at least used to) given different quality power delivery (among other things), as you'd expect (thus furthering the analogy).

[startrek03]

I agree with @TofuHaroto and @Ryan_Vickers. The GPU is basically a little subcomputer that is designed to do a specific task. It communicates through the PCI slot and outputs video thorugh the output ports. If the overclocking capabilities of a GPU were influenced by the motherboard, it could for one be the same in reverse (bad GPU affects CPU overclocking) and for another different I/O of the motherboard (USB, SATA etc.) could possibly also affect overclocking. We know that both of these issues to be non existent in our computing systems, so I think you can overclock the GPU however you want on whatever motherboard you have.

 

Edit: The only thing that might influence the GPU is the power delivery from the motherboard, but that influence should be negligible.

[SupaKomputa]

A better motherboard can overclock CPU  better, but not gpu, aside from power delivery, but highend gpu usually get the power straight from the PSU, so it won't be a problem.