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MSI 7950 Frozr 3 overclocking

post #1 of 16
Thread Starter 
Hello,

Guess I should let the community know what I'm trying to do.

My main goal is to OC my system to a reasonable level where it could be used for a prolongued period of time. I've already OCed my CPU (I5-3570K) to 4.2GHZ in my Bios (42x100).

The part which seems to be giving me trouble is Ocing my Video Card. I have a 7950 MSI Frozn 3 which I am currently using Afterburner to OC it. I manage to get my 3Dmark 2011 graphic score from 7400 to 8150 but I can't seem to get it higher. My Core Clock speeds have been changed from 880mhz to 1000mhz and the memory clock speed is changed from 1250mhz to 1325mhz. But when I try to increase it any further, it causes my CPU score to go lower or even the GPU score to go lower. I tried increasing the voltage slightly higher to see if it needed more power but no difference.

Can anyone give me tips on how to achieve a higher score. I know i've heard of some peopel hitting the 9100 score with their 7950. If I could get to even close to that score I would be happy.

Current HW setup:
CPU: I5-3570k
CPU Fan: Noctua nh-d14
Mobo: Gigabyte ga-z77x-ud5h
RAM: G.SKILL Ripjaws X Series 32GB (4 x 8GB) DDR3 1866
Video Card: MSI 7950 Frozn 3
SDD: 128GB OCZ Vertex 2
HDD: 4x2TB Seagate Barracuda Green in Raid 1 (Mirrored)
Power Supply: CORSAIR TX850 --- 850Watt psu


Thanks for any suggestion people may have.
The Behemoth
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The Behemoth
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post #2 of 16
You might want to try a different graphics OC utility. I would give MSI's afterburner a shot.
post #3 of 16
Does this 7950 use a ref pcb and have dual bios? If so you may want to try another bios. Some works better than others.
POWERFUL
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post #4 of 16
I had great luck flashing an XFX 7970 bios on my 7950 Twin Frozr III as evidenced here: http://www.3dmark.com/3dm11/4817645. I did however have one of the newer MSI 7950's with the 8+6 connector on it. I can't remember where exactly I found said Bios though, otherwise I'd post a link.

Edit: My CPU score did suffer though, it dropped maybe 500 points. However, the GPU improvement is worth it. Another side effect was that 3dmark11 seems to think my card only has 1GB of memory, despite the fact that everything else recognizes all 3 GB.
Edited by Birthday - 11/1/12 at 7:27pm
No Clue
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No Clue
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post #5 of 16
I have the same card as you, and this i my overclock, and for me this i stable.
post #6 of 16
Did you increase the power limit in CCC and afterburner? I'm siting at 1215/1792 @ 1.2v stable. Increasing the voltage past 1.2 actually hurts stability.
post #7 of 16
I dont know what's limiting you but my Sapphire 7950 goes to 1150/1600 on 1200mv. It boots right away... no crashes...
post #8 of 16
I'm pulling 10K on my 7950. GPU score is 10,699. at 1175/1525 @ 1141mV. I have found better luck while using the 12.11 Beta Drivers and Sapphire Trixx OC utility.I have an MSI TwinFrozr III w/ the 7970 reference board. Stock BIOS.

The Beater
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The Beater
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post #9 of 16
Thread Starter 
Quote:
Originally Posted by heroxoot View Post

Does this 7950 use a ref pcb and have dual bios? If so you may want to try another bios. Some works better than others.

I'm not sure how to tell how many Bios my videocard has. I know it has a 7970PCB due to the fact that it has 8+6 pin for power connectors. Any links to a guide on how to do so?

Quote:
Originally Posted by Birthday View Post

I had great luck flashing an XFX 7970 bios on my 7950 Twin Frozr III as evidenced here: http://www.3dmark.com/3dm11/4817645. I did however have one of the newer MSI 7950's with the 8+6 connector on it. I can't remember where exactly I found said Bios though, otherwise I'd post a link.
Edit: My CPU score did suffer though, it dropped maybe 500 points. However, the GPU improvement is worth it. Another side effect was that 3dmark11 seems to think my card only has 1GB of memory, despite the fact that everything else recognizes all 3 GB.

I've heard of people trying this but so few have had success with it. If this process ever gets perfected, I would love to do it since that should automatically be an increase in the cards efficiency. But for now, I'll stick with overclocking I think. If this is done and doesnt work out well, how easy is it to revert back to your old bios ?

Quote:
Originally Posted by nittencss View Post

I have the same card as you, and this i my overclock, and for me this i stable.

Strange I see no core Voltage on this Pic? I had to put in my core voltage. I think I noticed mostly when this issue is happening, it's when I change the voltage in MSI Afterburner that the issue really happens. I can max out my card without increasing voltage to about 1000/1325 core/memory speeds but as soon as I increase voltage, either my graphioc scores go down or it wont even complete 3dmark 2011 at all.

Quote:
Originally Posted by Phoriver View Post

Did you increase the power limit in CCC and afterburner? I'm siting at 1215/1792 @ 1.2v stable. Increasing the voltage past 1.2 actually hurts stability.

Do you need to increase the power limit in both for it to work? I've only been increasing power in afterburner!!! Wonder if this could be my issue. Too bad won't be home for a day or so to try.

Quote:
Originally Posted by UnrulyCactus View Post

I'm pulling 10K on my 7950. GPU score is 10,699. at 1175/1525 @ 1141mV. I have found better luck while using the 12.11 Beta Drivers and Sapphire Trixx OC utility.I have an MSI TwinFrozr III w/ the 7970 reference board. Stock BIOS.

Sounds like the type of score I was hoping to hit. I'll give your driver/Trixx OC utility a try over my current setup of afterburner/unknown driver version right now. Did you have to modify the power settings in CCC as well as Trixx for it to work?


Many thanks to all the replies, I haven't done anything of the sort in over 10 years and I'm trying to get back into the look of overclocking. The good old days of trying to figure out how to overclock a Voodoo2 ... never did work all that well back then. smile.gif
The Behemoth
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The Behemoth
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I5-3570K GA-Z77X-UD5H MSI R7950 Twin Frozr 3GD5/OC Radeon HD 7950 3GB G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin... 
Hard DriveCoolingOSKeyboard
OCZ Vertex 2 120GB Noctua NH-D14 Windows 7 Pro 64 bit  Corsair Vengeance K90 
PowerCase
CORSAIR Enthusiast Series TX850 Enermax Fulmo GT  
  hide details  
Reply
post #10 of 16
For those of you with the msi 7950 tf3, are you able to adjust the memory voltage iin afterburner and have gpuz and the afterburner graphs show the changed voltage?

I can move the slider but the readings never change from 1.6 v.
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