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post #1731 of 2146
thanx for your replay
i got stable with 790 core and default voltage and memory now
when i add more core like 820 it crash it in BF3 , and i return to raise the voltage to 1038 .. i can't ass +6mV. only 1025 then 1038 then 1050 and so on.
my question are
1- what about memory ? ( adding more memory clock with core clock ) or ( after i reach desired core clock and shader with voltage then play with memory clock ) ?
2- what's the maximum safe voltage ?




Hi ROoOYAL FALCON,
I hope you enjoy your GTX570 CUII as much as I like mine. While MSI Afterburner is a perfectly acceptable app for OCing your 570 I like to use an Asus product called GPU Tweak. I like to think that they may have a better OC product for their own graphic cards. And a better idea of how Asus cards work.
I agree with all that Agoriaz said, but would add that some people find complete stability in Benchmark software like 3DMark or Heaven and then still crash in some of today's games. BF3, Crysis, for example.
Don't worry if you cannot advance by 6mv at a time. Just go up whatever the next step in voltage may be. If it crashes at 820/1038 try 820/1050. If 820/1050 works, try 830/1050 and so on until you reach a point that it won't go any higher. I currently run mine 895/1113. Once you know all the different core clock and voltage combinations your card is stable on you then have to decide which ones are safe in your opinion. My card goes higher but I don't run it higher than that.
As far as OCing the Memory. In my opinion the gains are not worth the extra strain on card. You get a few frames per second or a few extra benchmark points for not much return. There is a thread on OCN about GTX 570s burning up the VRM chips and it all seems to point to Memory OCing. Our DCIIs are made better but I feel safer leaving the Memory stock.
Maximum safe voltage is whatever you decide to run. Some say once you go over stock it is no longer safe, but this is OCN so we gotta push some. I believe as long as you keep it cool you can max out the voltage in MSI AB or GPU Tweak and be safe. The DCIIs are tough cards.

Check out the DCII club in my sig and you can learn a whole lot more about these great cards...thumb.gif
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post #1732 of 2146
Quote:
Originally Posted by essanbee View Post

thanx for your replay
i got stable with 790 core and default voltage and memory now
when i add more core like 820 it crash it in BF3 , and i return to raise the voltage to 1038 .. i can't ass +6mV. only 1025 then 1038 then 1050 and so on.
my question are
1- what about memory ? ( adding more memory clock with core clock ) or ( after i reach desired core clock and shader with voltage then play with memory clock ) ?
2- what's the maximum safe voltage ?
Hi ROoOYAL FALCON,
I hope you enjoy your GTX570 CUII as much as I like mine. While MSI Afterburner is a perfectly acceptable app for OCing your 570 I like to use an Asus product called GPU Tweak. I like to think that they may have a better OC product for their own graphic cards. And a better idea of how Asus cards work.
I agree with all that Agoriaz said, but would add that some people find complete stability in Benchmark software like 3DMark or Heaven and then still crash in some of today's games. BF3, Crysis, for example.
Don't worry if you cannot advance by 6mv at a time. Just go up whatever the next step in voltage may be. If it crashes at 820/1038 try 820/1050. If 820/1050 works, try 830/1050 and so on until you reach a point that it won't go any higher. I currently run mine 895/1113. Once you know all the different core clock and voltage combinations your card is stable on you then have to decide which ones are safe in your opinion. My card goes higher but I don't run it higher than that.
As far as OCing the Memory. In my opinion the gains are not worth the extra strain on card. You get a few frames per second or a few extra benchmark points for not much return. There is a thread on OCN about GTX 570s burning up the VRM chips and it all seems to point to Memory OCing. Our DCIIs are made better but I feel safer leaving the Memory stock.
Maximum safe voltage is whatever you decide to run. Some say once you go over stock it is no longer safe, but this is OCN so we gotta push some. I believe as long as you keep it cool you can max out the voltage in MSI AB or GPU Tweak and be safe. The DCIIs are tough cards.
Check out the DCII club in my sig and you can learn a whole lot more about these great cards...thumb.gif

Thanx for your replay
I will adding some voltage
But i think that it's difficult for this card asus dcii to get wonder core clock with a nice voltage
and i found that other cards got higher than me of core clock with lower voltage than me .
And i see most of oc people raise memory
post #1733 of 2146
Now i got stable with 850 core with 1063 voltage in 3d mark11 withe default memory clock
but in BF3 i can't get stabel but only with 1075 voltage .. the core clock 850 doesn't got crash with BF3
i fear from this voltage if doesn't make safe on my card because i use computer 24/7 !
is't safe ? can i get more core with lower voltage ?
i think this card doesn't acceptance oc easly
post #1734 of 2146
Quote:
Now i got stable with 850 core with 1063 voltage in 3d mark11 withe default memory clock
but in BF3 i can't get stabel but only with 1075 voltage .. the core clock 850 doesn't got crash with BF3
i fear from this voltage if doesn't make safe on my card because i use computer 24/7 !
is't safe ? can i get more core with lower voltage ?
i think this card doesn't acceptance oc easly

Hi Again ROoOYAL FALCON,

Most GPU OC applications allow you to have multiple OC setups with a click of the button. You could set these up to have a gaming OC 850/1075 for button 1 and a default setup or mild OC for button 2 and so forth. That way before gaming you click the high OC and when finished you set back to default voltage. I would not worry about 1075 voltage even with hours of gaming. Not all GPU cards are the same. Even from the same manufacturer and model, your level of OC is luck. Some go higher, some need more voltage for the same core some need less. Are you using the newest drivers from the Nvidia website? Newest driver version for our card is 296.10. I still think you should be careful of Memory OC. Test it out in your games and see if you can see a difference.

Good Luck:thumb:
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post #1735 of 2146
Thanks for the addition of testing in a game environment essanbee! I completely forgot redface.gif I also had to add a little extra voltage to be BF3 stable.

I can confirm that adding to the memory clock only has very little gain! I had my memory clock set to 2300 and it gained me 40 points in 3D11 over the 1900 stock memory clock.
In regards to safe voltage, I personally wont go over 1.15v (1150mv) and I am running a 24/7 clock of 900/1800/1900 @ 1.075v. But as essanbee said, every card is different. And I highly recommend setting up profiles as well, in Afterburner it is really simple in fact:

Step 1: Have all the clocks set at stock speeds
Step 2: Click on Save button located to the left of the apply button - the numbered buttons should now be flashing green.
Step 3: Click on the button marked "1" - now your default setting is always at hand
Step 4: Set the desired voltage and clock speeds and click apply
Step 5: Click on the Save button and choose another number.

I have made 5 different steps in my profiles, 1 - Stock | 2 - Mild OC | 3 - Medium OC | 4 - Good OC | 5 - Benchmarking OC

@Rinzler:
Glad to hear that, those are very nice temperatures for an SLI overclock!
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post #1736 of 2146
Quote:
Originally Posted by Agoriaz View Post

Thanks for the addition of testing in a game environment essanbee! I completely forgot redface.gif I also had to add a little extra voltage to be BF3 stable.
I can confirm that adding to the memory clock only has very little gain! I had my memory clock set to 2300 and it gained me 40 points in 3D11 over the 1900 stock memory clock.
In regards to safe voltage, I personally wont go over 1.15v (1150mv) and I am running a 24/7 clock of 900/1800/1900 @ 1.075v. But as essanbee said, every card is different. And I highly recommend setting up profiles as well, in Afterburner it is really simple in fact:
Step 1: Have all the clocks set at stock speeds
Step 2: Click on Save button located to the left of the apply button - the numbered buttons should now be flashing green.
Step 3: Click on the button marked "1" - now your default setting is always at hand
Step 4: Set the desired voltage and clock speeds and click apply
Step 5: Click on the Save button and choose another number.
I have made 5 different steps in my profiles, 1 - Stock | 2 - Mild OC | 3 - Medium OC | 4 - Good OC | 5 - Benchmarking OC
@Rinzler:
Glad to hear that, those are very nice temperatures for an SLI overclock!

Strange to hear about the memory cause in my case i get a lot more 3d mark score just by OC the memory... it makes my max fps go up a nice number.

offtopic.gif Also can u tell me if ur GPU has dedicated wrm cooling? (that little heatsink over the mosfets)
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post #1737 of 2146
Weird, my card also goes unstable if I overclock my memory when I'm on 900 core. I haven't found an explanation nor a solution yet. But good for you none the less! thumb.gif

About my vrm cooling; as I see it, there isn't any contact between the mosfets and the heatsink, and there isn't a surrounding heatsink to them. It's a good pointer towards my non-overclocking memory problem I suppose. There is about 5-8mm between the heatsink and the mosfets as far as I could tell.
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post #1738 of 2146
Decided to settle with these settings for 24/7 use.

Gigabyte GTX 570 SOC @ 925/1850/2100 @ 1052 mV

http://www.techpowerup.com/gpuz/znhqs/

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post #1739 of 2146
Nice clocks at 1.052!
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post #1740 of 2146
now i can get stable with 850/1700/1900 @1075 in BF3
but after playing half an hour or tow hour .. i got crashed
my CPU i5-2500k got oc to 4.3 Ghz .. and BF3 use the whole cpu usage
is't from cpu or gpu ? or even from windows 7 64bit ultimate not orginal ?
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