gpu overclocking issues

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cincity

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Jul 2, 2013
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My Rig,

sli gtx 980ti gigabyte windforce (Boost: 1241 MHz / Base: 1152 MHz) & evga SC ( not overclocked ) (Base Clock: 1102 MHz / Boost Clock: 1190 MHz )
CPU- i7 3960x oc( 4.7ghz)
Motherboard- asus rampage iv latest bios
RAM- 4x8gb 2400mhz ram corsair platinum
PSU- Evga Supernova 1500
Cooling- custom cooling for cpu
Monitor- Asus rog swift gsync 144hz

lately i wanted to overclock my cpu/gpu to get performance increase as am not happy with the performance i see in most games on my gaming monitor or on my 4k tv,

so i wanted to overclock and i did my cpu i overclocked it to 4.7ghz but yet i didnt see any performance increase in either benchmark or games in 3dmark what was different is the physics score by 2k thats it,

now i have been trying to overclock my gpu and my gpu is the issue as u see i have 2 different gpu ref so different clock core i started to overclock the core on the first one slowly i started with +100mhz core and i did benchmark when i open gpuz or nvidia inspector or even 3dmark advanced i see my system information and i see my gpu has the extra +100mhz i put on the core but when i run stress test or benchmark or any game on max settings and check with osd on and gpuz sensors i see max i get is 1240mhz on core which means the overclock not taking the effect something is wrong,

i have been trying all day to get it working i did raise by 10mhz core to see if any difference but nothing and i did everything power limit to the max volt to the max everything but stil nothing i cant see more than 1240mhz on core and on games or benchmark not all the time at 1240mhz mostly at default 1101mhz

i have the latest driver installed 368.39, i even tried the latest hotfix but nothing also.

any suggestions or any idea what would be the problem ?
 
Solution
gokitty199
remember, the faster gpu(lets say reference card at 1100mhz and gigabyte g1 gaming at 1300mhz) will downclock itself to the same speed as the slower gpu, so you would need to increase the mhz on both gpu's in order for it to take affect. your best bet is to pull one card out so your only using a single gpu, overclock it to its max and write down what mhz you were able to hit stable with that card. then do the exact same for the other card, when you put both cards in your system overclocked them to the slowest cards max overclock.

lets say this is your cards overclock when you tested them by themselves.
gpu 1: 1496mhz;
gpu 2: 1380mhz;

you would overclock both cards to 1380mhz in your system to keep a stable overclock on both of your gpu's.
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gokitty199

gokitty199

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Feb 4, 2013
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remember, the faster gpu(lets say reference card at 1100mhz and gigabyte g1 gaming at 1300mhz) will downclock itself to the same speed as the slower gpu, so you would need to increase the mhz on both gpu's in order for it to take affect. your best bet is to pull one card out so your only using a single gpu, overclock it to its max and write down what mhz you were able to hit stable with that card. then do the exact same for the other card, when you put both cards in your system overclocked them to the slowest cards max overclock.

lets say this is your cards overclock when you tested them by themselves.
gpu 1: 1496mhz;
gpu 2: 1380mhz;

you would overclock both cards to 1380mhz in your system to keep a stable overclock on both of your gpu's.
 
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