• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

6950 overclocking issues..

vvulture

New Member
Joined
Jan 25, 2009
Messages
48 (0.01/day)
Location
Sydney, Australia
Hey guys,
Here is what i have done so far :
- Unlocked extra shaders using RBE 1.28
- Increased the voltage of my 6950 to 1.275v using RBE 1.28
- Increased upper clock limits in CCC using RacerX v11
- Set power control in CCC to +20%

Now, the issue is that when i increase the core clocks past about 920Mhz, i start getting GPU thottleing. I have attached a pic to explain better. As you can see, the GPU clocks throttle really bad. This test was done using Furmark 1.9.0 on the 1920x1080 preset.

Have any of you 6950 overclockers ever come across this ?

My temps are not the problem and both cards are under water.

Thx guys.

 

vvulture

New Member
Joined
Jan 25, 2009
Messages
48 (0.01/day)
Location
Sydney, Australia
never mind guys... found my answer.
It's powertune kicking in. :banghead:
 

LearnIIBurn

New Member
Joined
Mar 25, 2011
Messages
4 (0.00/day)
Location
San Francisco
System Name Half Good
Processor Intel i5-2500k @ 3.3 (Stock)
Motherboard MSI P67A-GD55 (B3) LGA 1155
Cooling Stock Intel Fan -Boo this man!
Memory G.Skill Ripjaw DDR3-1600 2x2GB
Video Card(s) Sapphire HD 6950 2GB @ 1536 Shaders
Storage 2, dirt nasty HDDs from like 2006
Display(s) Samsung 24'' LCD 1920x1200
Case Really cheap Rosewill case
Audio Device(s) Onboard
Power Supply Really cheap Rosewill 500W (Came with case) Boo!
Software Windows 7 Home Premium 64bit Service Pack 1
After modding your volts in RBE, does the card still idle voltage at 0.900? What is the best way to add more voltage in RBE? I've been trying to give my card more juice for days now, and I can't seem to make it happen.
 

vvulture

New Member
Joined
Jan 25, 2009
Messages
48 (0.01/day)
Location
Sydney, Australia
Well actually, i stopped using RBE for voltage control so
i have no answer for you.
Im now using MSI AfterBurner for everything.

Cheers
 
Top