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~~The GTX 670 Overclocking Master-Guide~~ - Page 124

post #1231 of 3357
keep increasing memory by how much?
post #1232 of 3357
Quote:
Originally Posted by Frankrizzo View Post

keep increasing memory by how much?

i would go 25mhz at a time. it steps up in increments, maybe by 13mhz a step like the core does. dont remember reading and never tested. if you get artifacts, back it down by 10mhz and test again...
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post #1233 of 3357
As requested, AGT 170-550.docx 981k .docx file . I couldn't get heaven in the same screen with the others biggrin.gif. I maxed out on the power target and crashed mid way (I think around stage 8 or 9 out of 26). I will try use the same settings (+160 and +170 with same mem clock) on precision-x and report back. Thanks for the help!
post #1234 of 3357
Quote:
Originally Posted by iRandomize View Post

You should max out your power target nomatter what, and i would love to see a screenshot of GPU Tweak while the GPU is under load (mid Heaven).
The voltage slider doesen't really do anything, so just keep that one at stock.

actually yes the voltage slider does do something. it keeps the voltage from dropping and causing a crash when it goes from low load to high load, the card doesnt apply full voltage quick enough.
max out both the voltage and power sliders...
Quote:
Originally Posted by Mozz13 View Post

As requested, AGT 170-550.docx 981k .docx file . I couldn't get heaven in the same screen with the others biggrin.gif. I maxed out on the power target and crashed mid way (I think around stage 8 or 9 out of 26). I will try use the same settings (+160 and +170 with same mem clock) on precision-x and report back. Thanks for the help!

use afterburner after that. exact same clocks and watch your score change. its awesomely funny
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post #1235 of 3357
Awesome guide....Thanks for this~ I spent all night (until 5 AM) overclocking both of my MSI 670 OC PE cards and got a stable clock at 1306mhz on 1 card and 1260ish on other. Anyhow, I had the case cover off since I botched the correct placement of the fans and was able to hold stead at 69 C. Ran through many 3d heavens, 3dmark vantage etc ... No issues at all.

My DX11 3DMark Vantage Score from last night: http://www.3dmark.com/3dmv/4480206

So today I decided to fix the fan placement and add 1 120MM fan to the side, anyways, after I put everything back I ran 3DHeaven max settings at the same OC speeds and crashed. I can't even get half the OC I had last night and my temps are even lower now!!!!!

I'm using the 306.97 Nvidia drivers...

My system:

I7-I2700k OC to 4.5
Corsair 650HX PSU
16GB Vengeance 1866 Ram
2 x MSI 670 OC PE 2Gb cards at 1175Mv per
Asus Sabertooth z77
OCZ 256 SSD

This doesn't make any sense at all to me... Any help guys?
post #1236 of 3357
Quote:
Originally Posted by Iannotti View Post

Awesome guide....Thanks for this~ I spent all night (until 5 AM) overclocking both of my MSI 670 OC PE cards and got a stable clock at 1306mhz on 1 card and 1260ish on other. Anyhow, I had the case cover off since I botched the correct placement of the fans and was able to hold stead at 69 C. Ran through many 3d heavens, 3dmark vantage etc ... No issues at all.
My DX11 3DMark Vantage Score from last night: http://www.3dmark.com/3dmv/4480206
So today I decided to fix the fan placement and add 1 120MM fan to the side, anyways, after I put everything back I ran 3DHeaven max settings at the same OC speeds and crashed. I can't even get half the OC I had last night and my temps are even lower now!!!!!
I'm using the 306.97 Nvidia drivers...
My system:
I7-I2700k OC to 4.5
Corsair 650HX PSU
16GB Vengeance 1866 Ram
2 x MSI 670 OC PE 2Gb cards at 1175Mv per
Asus Sabertooth z77
OCZ 256 SSD
This doesn't make any sense at all to me... Any help guys?

what are you using to overclock ?
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post #1237 of 3357
Quote:
Originally Posted by pc-illiterate View Post

what are you using to overclock ?

I used a few different programs before reading the guide, but settled on eVGA precision X for last nights overclock.

I just noticed during a stress test one of my cards voltage is dropping to 1.162 but goes back to 1.175 after the test, other card is maintaining 1.175 ...I sure the hell hope it doesn't mean the PSU..HX650 should be plenty. Also the CPU freezes now as soon as I hit reboot button. I reinstalled the drivers yesterday when that happened and it seemed to fix it then.
Edited by Iannotti - 12/28/12 at 6:15pm
post #1238 of 3357
Quote:
Originally Posted by pc-illiterate View Post

actually yes the voltage slider does do something. it keeps the voltage from dropping and causing a crash when it goes from low load to high load, the card doesnt apply full voltage quick enough.
max out both the voltage and power sliders...
use afterburner after that. exact same clocks and watch your score change. its awesomely funny

I did it using Precision X and yes the result is funny. Using the same +160 and +550 but I got better result. PX 160-550.docx 656k .docx file . I even managed to complete heaven on +170 and +550 with Precision X but with what I think 3 artifacts (bright big red dots for around half second). PX 170-550.docx 646k .docx file .
I didn't get these red dots thing on +160 and +550 so should I push the card even more?
Another thing with the voltage is that I didn't change anything in the settings and keeping it at default but at the end of the run, GPU Z reported max of 1.175 v. Weird eh..
post #1239 of 3357
those red dots are artifacts, usually (99%) caused by memory clock too high. core clocks cause the driver to crash which requires a restart to get the driver working again.
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post #1240 of 3357
Quote:
Originally Posted by pc-illiterate View Post

those red dots are artifacts, usually (99%) caused by memory clock too high. core clocks cause the driver to crash which requires a restart to get the driver working again.
So basically, I still can push the GPU clock higher while decreasing the memory clock?
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