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*** Official AMD 7990 Owners Thread ***

Diagro said:
Even with 1.3v one of the GPU's will not do more than 1140Mhz.
Its a shame, But tbh 1140Mhz on a dual core card isn't shabby :P
Click to expand...

Not too bad mate, mine will get 1215 just, but not stable for continous runs. 1200 / 1700 seems a good compromise for my cores.

For mining I get best results at 1100/1500 and for gaming I run @ stock.

Temps is really what is important except for benching. what are your max temps ?
 
Any 7990 owners getting issues with the coil noise that a lot of sites have picked up on (seems to be the amd reference card its occurring on)? Quite a few reviews have tested multiple cards and experienced it, amd recommend enabling vsync to reduce it.


That would really get annoying.
 
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Please bear with me - Been a Nvidia user since the very beginning, and the little AMD experience I have is 6ish years ago on a laptop.

My system is nearly done and the last tid bits are incomming with UPS on Monday, incuding the ASUS ROG IMPACT. So I was hoping some fellow 7990 owners could point / mentor on how to overclock these cards - I have a waterblock on it, so heat should not be any issue.

I did Google it, but I kept running in circles on forums where people kept going on about reference and non-reference PCB and Reg-edits.

Have experience with flashing ROMs and using EVBOTs (soldered them myself) - so not a complete beginner, unfortunately this is the first time I am playing on this side of the fence, so could use a guiding hand.

Also, if there are any Do and Dont in CCC etc. I would greatly appreciate it :)
 
Sjoerslev said:
Please bear with me - Been a Nvidia user since the very beginning, and the little AMD experience I have is 6ish years ago on a laptop.

My system is nearly done and the last tid bits are incomming with UPS on Monday, incuding the ASUS ROG IMPACT. So I was hoping some fellow 7990 owners could point / mentor on how to overclock these cards - I have a waterblock on it, so heat should not be any issue.

I did Google it, but I kept running in circles on forums where people kept going on about reference and non-reference PCB and Reg-edits.

Have experience with flashing ROMs and using EVBOTs (soldered them myself) - so not a complete beginner, unfortunately this is the first time I am playing on this side of the fence, so could use a guiding hand.

Also, if there are any Do and Dont in CCC etc. I would greatly appreciate it :)
Click to expand...

No need to go that far with soldering. Just get a water block, remove air cooler and fit.

All of the work done is software driven.

Catalyst 13.6 Beta is needed as the core driver.

Use MSI Afterburner latest beta and GPUID to check the settings afterwards. The reason is that I have found the MSI AB is the only clocker that will actually recognise the AMD 7990 cards and actually change the voltages for you. ou may have to set them 3 - 4 times in a row for them to take affect. but it does work. All of the other overclock programs including Sapphires own TRIXX fail to recognise the card.

Under water, I leave mine on factory settings, for benching and showing off I set it to 1.3volts and 1200 GPU / 1700 MEM
 
On a 7990 the 13.8 Beta works perfectly.
Bf3 seems so different, So smooth and for some reason its got much higher FPS aswell
 
Amazed there aren't more of you talking about 13.8. As a former Crossfire user I'm really interested to hear about the differences it has made.
 
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