GTX 970 Core Voltage and Clock throttling, please help

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Slipperss

Slipperss

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Apr 7, 2010
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So I thought I had overclocking my 970 nailed down, turns out I still got a lot more to learn.

When I went to stress test in Furmark, with 112% power limit and +87mv voltage, the core voltage should be 1.2560v, problem is though, it lowers itself on its own, right away when i put heavy load on it.

I don't know what is going on, but it never actually gets to 1.2560v, let alone gets stable.
I think it is depending on temperature or TDP or something, but a few seconds after i started Furmark lowered itself to 1.150v even though it was only 50c.

It is stable at 1.2560v in games and benchmarks that only got TDP to 73% or so.

I'm overclocking with MSI Afterburner

Please help.
 
Solution
nikoli707
look in the afterburner hardware log and note what it says the power limit is. if its at or passing your 112% power target, its going to throttle. also lower in the hwmonitor it has a power state thing that shows 0 or 1 which tells you if its throttling back for some reason.

if your hitting 112% power target, your at the limit of your stock bios. im not too familiar with 970/980 overclocking and bios modification but some models, along with having the right voltage controller, should be able to unlock a much higher power target.

my classy 780 allows up to 1.50v and a 200% power target with a skynet bios. though my card has dual bios and evga specifically says that you are allowed to flash the bios and remove the stock heatsink for...
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nikoli707

nikoli707

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Jan 4, 2012
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look in the afterburner hardware log and note what it says the power limit is. if its at or passing your 112% power target, its going to throttle. also lower in the hwmonitor it has a power state thing that shows 0 or 1 which tells you if its throttling back for some reason.

if your hitting 112% power target, your at the limit of your stock bios. im not too familiar with 970/980 overclocking and bios modification but some models, along with having the right voltage controller, should be able to unlock a much higher power target.

my classy 780 allows up to 1.50v and a 200% power target with a skynet bios. though my card has dual bios and evga specifically says that you are allowed to flash the bios and remove the stock heatsink for water block application without voiding your warranty. not all cards are going to offer this so check with your cards manufacture warranty before you possibly ruin a 3 to 5 to lifetime warranty by flashing the bios.
 
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