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~~The GTX 670 Overclocking Master-Guide~~ - Page 4

post #31 of 3357
dang I dont know how to rep , I would If I knew :S
post #32 of 3357
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Quote:
Originally Posted by amadnei View Post

dang I dont know how to rep , I would If I knew :S

242

I should make a guide on how to +rep. Then people can all test out what they learned by +repping me rolleyes.gif

INFINITE REP GENERATOR!
post #33 of 3357
Oh good lord! my life is changed , thanks thumb.gif
post #34 of 3357
Hey Sean,

Amazing guide. I am doing the OCing at the moment and have a few questions...

This was just on the first run, so I don't have too much info.

I have attached a screenshot of my results after I increased the offset by 15 to get a boost clock of 1100. Why does it say that I am using the Intel 4000? I am testing this on my sig rig. Should I disable the Intel 4000 in the device manager or something?700

Also, during the entire test, GPU 1 was running "harder" than GPU 2. In relation to GPU2, GPU1 always 10% more on the power, 13mV more on the voltage, 39MHz more on the clock, 4 deg C warmer temp, and 4% higher fan percentage.

I do have the sync box checked in Precision X.

Thanks a ton,
Big Al

+rep for an amazing guide
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post #35 of 3357
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Quote:
Originally Posted by bigal1542 View Post

Hey Sean,
Amazing guide. I am doing the OCing at the moment and have a few questions...
This was just on the first run, so I don't have too much info.
I have attached a screenshot of my results after I increased the offset by 15 to get a boost clock of 1100. Why does it say that I am using the Intel 4000? I am testing this on my sig rig. Should I disable the Intel 4000 in the device manager or something? Warning: Spoiler! (Click to show)
700
Also, during the entire test, GPU 1 was running "harder" than GPU 2. In relation to GPU2, GPU1 always 10% more on the power, 13mV more on the voltage, 39MHz more on the clock, 4 deg C warmer temp, and 4% higher fan percentage.
I do have the sync box checked in Precision X.
Thanks a ton,
Big Al
+rep for an amazing guide

Do you have VirtuMVP turned on? I'm not really sure why sometimes Heaven shows the Intel 4000 as the GPU even when Virtu is off. You could try disabling the HD4000 in your UEFI/bios. As far as i know, the HD 4000 has very little value for a desktop computer if you don't care about VirtuMVP (which at this point doesn't have a lot of real-world value) and QuickSync (fast video encoding). Maybe someone else can add more to this than i can.

As for GPU1 running 'harder' than GPU2 in SLI, that's normal.
post #36 of 3357
Quote:
Originally Posted by SeanPoe View Post

Do you have VirtuMVP turned on? I'm not really sure why sometimes Heaven shows the Intel 4000 as the GPU even when Virtu is off. You could try disabling the HD4000 in your UEFI/bios. As far as i know, the HD 4000 has very little value for a desktop computer if you don't care about VirtuMVP (which at this point doesn't have a lot of real-world value) and QuickSync (fast video encoding). Maybe someone else can add more to this than i can.
As for GPU1 running 'harder' than GPU2 in SLI, that's normal.

Thanks for the reply!

I have never heard of VirtuMVP. If it doesn't run by default, I doubt it is running now tongue.gif

Is it safe to disable the 4000 in the BIOS? I have read both that it is always necessary to disable the onboard graphics, but some people have also said that with the Intel 4000, that you want to keep it. I don't really know what to believe, so I just left it.

Sounds good on GPU 1 running harder.

Thanks again!

+rep

EDIT: looks like virtumvp was on by default in the uefi. Turned it off and got an extra fps at the same clocks. It also shows the right card now smile.gif
Edited by bigal1542 - 6/3/12 at 12:59pm
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post #37 of 3357
Quote:
Originally Posted by SeanPoe View Post

Sorry, but you're incorrect on all three points.
The Boost Clock is typically the minimum clock that the GPU will run at while under load. If it's being extremely throttled by power percent, it drops to the Boost Clock, after that it drops to one of the power-saving modes which is 920MHz -- that's the true 'minimum' someone will ever see under-load, but it's not at all typical.
I'm not sure what you mean by the average clock over the base clock. If you're suggesting that the Boost Clock is what the card runs at while under full-load, then that is incorrect. The 'average' core frequency under load should always be the Max boost frequency (Boost Clock plus Kepler Boost).
Technically, the minimum clock speed is the first power saving mode at 324MHz. I've never seen the card drop to this under any type of load. Even 2D applications will pull it out of this state. The second lowest clock speed is the second power saving mode at 920MHz. If you're WAY over your power percent, like when running furmark at 1080p, it will drop to this power saving mode even while at full-load. After that the minimum is the Boost clock. The base clock plays no role here.

Sorry, what you are saying is not correct, you should re-read how the kepler clocks are explained by nVidia.
Quote:
For example, the GeForce GTX 680 has a base clock of 1006 MHz and a boost clock of 1058 MHz. What this means is that in intensive 3D games, the lowest the GPU will run at is 1006 MHz, but most of the time, it'll likely run at around 1058 MHz. It won't run exactly at this speed--based on realtime monitoring and feedback, it may go higher or lower, but in most cases it will run close to this speed.

source: http://www.geforce.com/whats-new/articles/introducing-the-geforce-gtx-680-gpu/
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post #38 of 3357
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Quote:
Originally Posted by iatacs19 View Post

Sorry, what you are saying is not correct, you should re-read how the kepler clocks are explained by nVidia.
Quote:
For example, the GeForce GTX 680 has a base clock of 1006 MHz and a boost clock of 1058 MHz. What this means is that in intensive 3D games, the lowest the GPU will run at is 1006 MHz, but most of the time, it'll likely run at around 1058 MHz. It won't run exactly at this speed--based on realtime monitoring and feedback, it may go higher or lower, but in most cases it will run close to this speed.
source: http://www.geforce.com/whats-new/articles/introducing-the-geforce-gtx-680-gpu/

There's a couple ways to explain this:

1) Companies are not always right. I challenge you to go ask for help on the official Intel, Nvidia or basically any companies forums. Their paid forum representatives usually know very little about their own products.

2) They're talking about the 680 there which actually does run closer to the Boost Clock than the 670 does from I've seen. But they're still wrong (the 680 doesn't run at the Boost Clock, it's usually 30-80MHz higher because of the Kepler Boost) and being overly simplistic. They're probably being overly simplistic on purpose because most people would be confused if they said: "The new 680 has a base clock, a boost clock, and a dynamic boost clock that's added to the boost clock. The card actually never runs at the base clock, we don't even know why we added this number. Also, the card almost never runs at the boost clock either because of the dynamic clocking feature that brings the card up another 100MHz because of the Kepler Boost."

3) It's proven countless times by running benchmarks and looking at the graph afterwards. Please explain then why when i run Heaven that my GPU core clock is at a CONSTANT 1260MHz when my Boost Clock is only at 1156:
700
608

And lastly, and this might come off as rude but that's not my intention, you really shouldn't believe something based off of only one source. It really doesn't mater how credible that source is, there's always a first time for mistakes. This has been proven countless times in the scientific community over the years, where an established and trusted scientist (or organization) is later disproven.
Edited by SeanPoe - 6/3/12 at 12:34pm
post #39 of 3357
Just followed your guide with great results.

2 EVGA GTX 670 FTWs in SLI
GPU Max Clock: 1300 MHZ
Memory Max Clock: 1800 MHz

I could get the Clock to 1302 and the Memory to 1817 stable in Haven, but decided round numbers is nicer than a 0.7 fps advantage.

333
Edited by bigal1542 - 6/3/12 at 5:33pm
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post #40 of 3357
This guide is awesome!! I read it in anticipation of my build coming soon. I'm very new to overclocking and after reading through this guide I feel like a pro already! thumb.gif Haha


+rep to you! biggrin.gif
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