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~~The GTX 670 Overclocking Master-Guide~~ - Page 204

post #2031 of 3357
Quote:
Originally Posted by Mephic View Post

Small question from me - I own a GTX 660Ti Power Edition but this guide suits me very well.

I got my final Kepler Boost clock at 1333 MHz on core and 7400 MHz on memory. For 24/7 I decided to back down memory to 7200 MHz.

I'm using MSI Afterburner because in Power Edition cards it lets You overvolt the card over 1,175v. So I added +60mv voltage.

Now I have a weird problem:

In Heaven or Valley benchmarks I get high GPU usage, I'm around 100% power target (whenever it goes higher than 102-103% card declocks itself, although i set power target to 114% which is maximum for my card - same with EVGA Precision X) and the clock is stable at 1333 MHz on core.

But for example when I run 3dmark 11 I get 105% power usage sometimes and also low GPU usage which results in card declocking itself even to 1150 MHz.

In games it depends on a game - In Far Cry 3: constant 100% gpu usage, clocks 1333 MHz on core = good performance
Skyrim: GPU usage rarely goes over 70%, power % max 80-90% = good performance although sometimes it drops from 60 to 45 FPS (I use loads of mods but max 1,8 GB Vram) - clock varies from 1150-1333 MHz
World of tanks: GPU usage:50% power% 80% = mediocre performance - often see FPS drops although can't find the reason why GPU usage is so low (everything maxed out). FPS 60 stable but during fights they drop to 40 and than I see stuttering. And I can't find the reason why gpu usage is so low - on gtx 560 Ti it was 90-95% although I couldn't run the game at max settings. Clock varies (goes down even to minimum 1080MHz)

CPU: Core i5 3570K @4,5 GHz

Any advices on this? My temps never went higher than 60 degrees with 50% fan (got nice fan profile, and very well cooled case).

When your fps drop and your GPU is not at full load that usually means you get Cpu bottleneck at that moment. Also wolrd of tanks being and mmo kinda is cpu heavy. Check your Cpu load during the fps drops.
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post #2032 of 3357
What You mean is that i5 3570k clocked to 4,5 GHz may cause bottleneck??? Dear God... That is weird. I had 7950 before (it died right after I bought it) but I didn't have this problem there in WOT. I also did some more voltage tweaking today and got myself 1346 Kepler boost and 7400 mem stable again - but the problem persists.
post #2033 of 3357
I am confused..

So I set my core offset to +120MHz. My boost clock is 980MHz. When I run Heaven, Precision shows me it's running at 1150MHz.

What is going on? Both my voltage and power target are set to max. Card reaches a max of 53C on Heaven. Highest TDP was 36%.
post #2034 of 3357
Quote:
Originally Posted by ZeVo View Post

I am confused..

So I set my core offset to +120MHz. My boost clock is 980MHz. When I run Heaven, Precision shows me it's running at 1150MHz.

What is going on? Both my voltage and power target are set to max. Card reaches a max of 53C on Heaven. Highest TDP was 36%.
Never trust what Haven tells you in terms of boost clock or gpu clock.
Check it for example with GPU-Z on Sensors tab while stress testing.
Quote:
Originally Posted by EarlZ View Post

Im currently using KGB from xtreme systems, it has an option to limit the max boost but it does not seem to work properly. I'll try this. thanks!

So after checking with this tool the boost limit on both cards are already at 1202. Not sure why the second card is doing 1215.. but it moves down the back up from time to time.
When using Kepler Bios Tweaker you need to change boost table to the same as max boost you're setting,
Edited by xonare - 3/26/13 at 4:36pm
post #2035 of 3357
Quote:
Originally Posted by xonare View Post

Never trust what Haven tells you in terms of boost clock or gpu clock.
Check it for example with GPU-Z on Sensors tab while stress testing.
Checked in GPU-Z and it showed the same thing. If my boost clock is at 980 and I increase the core offset to +120, shouldn't it be at 1100MHz, not 1150?
post #2036 of 3357
Quote:
Originally Posted by ZeVo View Post

Checked in GPU-Z and it showed the same thing. If my boost clock is at 980 and I increase the core offset to +120, shouldn't it be at 1100MHz, not 1150?

No. Every card has their own boost clock - the 980 is just the "reference" boost clock. Your card sounds like it would boost to 1030 at stock.
post #2037 of 3357
Quote:
Originally Posted by Forceman View Post

No. Every card has their own boost clock - the 980 is just the "reference" boost clock. Your card sounds like it would boost to 1030 at stock.
While playing PlanetSide 2 I did notice when under 58C it runs at 1032MHz constant unless of course I go into menu. However, if it goes past 58C it automatically goes up 13MHz to 1045 until the card goes under 58C.
post #2038 of 3357
So I'm in the preliminary stages of overclocking my EVGA GTX 670 and currently I'm working on finding my stable core offset. When running Heaven 3.0 with maxed out settings @1080p I was able to complete the benchmark with a core offset of +123MHz, anything higher and I crashed to desktop. I noticed that I was using an out of date Heaven benchmark and proceeded to download the newer 4.0 benchmark. I noticed some of the settings were slightly different but overall the same. Rather than choose the "Extreme" setting I selected "Custom" because the extreme setting forces a resolution of 1600x900. So after maxing out all settings under custom and choosing the 1080p resolution I proceeded to start the benchmark. However, within only a few seconds of the start of the benchmark I crash to desktop even though I'm using the same +123MHz core offset that got me through successfully before.

Can anyone shed some light as to whether or not the new 4.0 benchmark is more demanding or what else could be the problem?
post #2039 of 3357
yes its more demanding. its made for this and future generations of cards.
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post #2040 of 3357
Quote:
Originally Posted by pc-illiterate View Post

yes its more demanding. its made for this and future generations of cards.

So should I stick to using Heaven 3.0? Or should I use the new "Valley" benchmark?
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