Can a motherboard effect how much you can overclock a GPU?

[los]

As the title can a motherboard effect how much you can overclock a GPU as in core and clock?

 

[Mynight]

Id say it plays a factor in it.

Pcie lanes provide 75w of power to the card. Obviously if its not being able to pull that from the mobo it could cause issues and lower the limit.

Also when you set voltage its never dead on. For example 1.4v could be droop or raise between 1.395 -1.41 and another board reporting 1.4v could be only supplying 1.39v.

I guess the ability to change pcie frequency could hurt the max clock as well.

 

[Jono8]

I am wondering this as well.

 

[los]

Ok thanks very much, do you think its much as a percentage?

 

[Mynight]

I imagine it would have the same effect as an old psu. The quality of reporting voltage and maintaining it could be a 100mhz difference ( maybe more who knows).

I looked into this a while ago when I took my 7850 and plugged it into my new x79 platform. Got an extra 115mhz from it at same voltage. managed 1180mhz @1.25 volts. Then again my old system was a gigabyte am3 with a 600w corsair psu so it could have been its age holding it up.

 

[Jono8]

Hm, i wonder if it is my old p67a chipset that is holding my gtx 670 PE back in the overclocking stakes. P67 is pretty old hat/rubbish by todays standards right?

 

[los]

NO way that does surprise me I didnt think it would be that much at all, cheers for your reply

 

[Mynight]

I imagine its more to do with which board it is than the chipset. I could be very wrong here though. If it was a top of the range board in its day then I imagine it should be just as good today. p67 is what 2011 tech? So its not that old in physical terms.

Bear in mind mine was a gigabyte mid range mobo from 2009 one. So it had 4 years to degrade.

Quite a difference in quality between a £90 am3 2009 gigabyte and a £300 asus 2012 "top of the line".

I guess at the end of the day motherboards are governed by the "chip lottery" as well.

 

[Suarez7]

I'd say it makes little to no difference tbh, on a card that only draws power from the slot then maybe but not on proper GPU's. It's purely down to the chip on the card tbh.

 

[Mynight]

Dont cards that have additional power requirements eg 8pin 6pin whatever, still draw power from the pcie slot?

 

[Rroff]

I'd say it makes little to no difference tbh, on a card that only draws power from the slot then maybe but not on proper GPU's. It's purely down to the chip on the card tbh.

I'd agree as a vast generalisation the motherboard will make very little odds when everything is working normally.

A board that has flaky PCI-e support and/or related issues like power stability could cause a problem but that would be fringe cases.

 

[setter]

Ive tried my best clocking 670 in 3 different mobos, asus p6t deluxe v2, asus p6 x58 de and the p8 z77 pro in sig. All three boards handled it fine with the same oc of +130/+770.

 

[Mynight]

Same volts?

I'm wondering if my am3 board was just naff then