What factors determine the overclockability of a motherboard?

See title.

Does more voltage regulators ==> better overclocking motherboard?

Also, do motherboards with integrated graphics not overclock as well as those without integrated grapics?

The quality of the voltage regulators and voltage circuitry (mosfets and caps) probably are more important than the actual number of regulators (to a certain point).

Generally, motherboards with integrated graphics do not O/C very well, probably because the only put integrated graphics on cheap boards. All the best overclocking boards do not have on-board video.

Indeed, it's also dependant of the chipset on which the board is based. For instance a 975X board won't oc as well as a P35 board. And lastly it's also very dependend of the bios options. Some cheap/budget boards don't have voltage adjustment options in the bios, making it almost impossible to oc.

Oh yeah vdroop is also a minor factor, but it can often be modded

Kittyhawk said:

See title.

Does more voltage regulators ==> better overclocking motherboard?

Also, do motherboards with integrated graphics not overclock as well as those without integrated graphics?

Click to expand...

More VR's guarantee nothing. The design aspect is very complicated. Usually having more power "phases" would ensure that smaller valued passive components can be used. But there are trade-offs like EMI issues, change in the feed-back loop configuration, more design complexity etc. So, you can't definitively tie the number of components to the quality of the solution.

With regards to onboard graphics, the answer is more deductive than technical. Most people who desire onboard graphics are either looking for a uATX solution or are on a shoe-string budget. Hence in many cases boards with integrated graphics are not geared towards overclocking.

Hope this answers your questions.