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Power target throttles itself downward at times with evga 670 ftw but only certain programs. - Page 2

post #11 of 15
Quote:
Originally Posted by mcg75 View Post

That's actually what I was wondering myself. If I set the gpu to 1335mhz and leave memory alone, I only hit slightly over 100% on power target. It's when I set memory to fairly high that power usage will hit 120% or slightly higher.
It's almost like I have a memory failure without a crash.

I would try dialing back the memory then until the problem goes away.. memory overclock only provides a rather marginal performance increase anyway.

It does sound like your overclock is a bit too aggressive. As suggested above, make sure windows and NCP are set to maximum performance as well.
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post #12 of 15
Thread Starter 
Quote:
Originally Posted by brettjv View Post

Try running the card at stock for a while, see if the problem goes away. If it does, then you know what the cause was. Kepler cards can appear to be stable at certain OC's for fairly long periods of time before they suddenly randomly crash due to instability.
So, I think what you're seeing is some type of problem created by your OC. A 'partial' crash, if you will.
And you're right, it's definitely not the PSU.

I'm really leaning toward the partial crash theory now. I just did 4 runs of Heaven at 1315mhz and 6610mhz and did not get the downclocking.
Quote:
Originally Posted by Accuracy158 View Post

That's what I was thinking... You don't see any kinds of artifacts? Overclock seem to be above average... is it a modded BIOS?

At 1340mhz I will see artifacts. Nothing before that. It's the stock FTW bios. My card boosts to 1215mhz stock.
Quote:
Originally Posted by Talon95 View Post

I would try dialing back the memory then until the problem goes away.. memory overclock only provides a rather marginal performance increase anyway.
It does sound like your overclock is a bit too aggressive. As suggested above, make sure windows and NCP are set to maximum performance as well.

Actually Kepler reacts better to memory oc. When overclocking memory from stock to 7000mhz, I will get 10% fps gains.
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post #13 of 15
Oh really? I didn't know that about the memory overclocking on Kepler. It probably has something to do with the entire platform being so bandwidth constrained on that side of things.

It does sound like your overclock was a bit too aggressive. If you have no problems long-term at 1315MHz then it sounds like backing down the clocks a little bit solved the problem. thumb.gif
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post #14 of 15
Double post.
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post #15 of 15
I think it's because Kepler cards use ECC memory. With high vram overclock it won't crash but the error correction kicks in and slowdown everything in the process.
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