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HD6950 DIRT3 Edition - Overclocking and questions

post #1 of 17
Thread Starter 
Hey,
That's my first post on this forum.
On start - sorry for my english.
Okey, I have hd6950 dirt3 edition and i overclocking this card with sapphire trixx.
All is ok, but this card has limited voltage tweak. Maximum is 1.18V.
Now, Can I mod this card? because i want have higher voltage tweak.
Greets

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post #2 of 17
Why do you need to up the voltage? you should ONLY up the voltage when the card become unstable. try upping the clock shaders and memory then you might up the voltage. because increasing the voltage alone will do nothing but make it run hotter. additonally you may want to look at MSI afterburner:http://event.msi.com/vga/afterburner/download.htm
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Sandy Thunder
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post #3 of 17
Without touching the voltage I can hit 900-C & 1400-M on my hd 6950 dirt 3
post #4 of 17
Thread Starter 
@DSP1
Yea, i know, I OC'ed my hd6950 to 950Mhz/1380Mhz 1.18V, but
this card have a voltage limit and max is 1.18V and is stable.
Now this performance is good(now i use 925Mhz/1370 1.145V) but I want to higher OC in future and this 950Mhz is max because is voltage limit.
Ok I try unlock shaders.
And last question:
What will be better: 950Mhz and locked shaders or lower and unlock shaders ?
post #5 of 17
^ unlocking the shaders only gets you around 4-5% performance boost for the same clock speed. As you are already getting more performance by your high OC on the core & memory. You can try unlocking but its not guaranteed. In my case I got the Antilles chip and it dint unlock. To get more vcore limit, edit your bios using RBE and then flash the edited bios.
post #6 of 17
Thread Starter 
Ok unlock voltage with RBE, but How?
PS. I have card of Dec 15 2010(I see this in GPU-Z), and unlock will be well.
post #7 of 17
Thread Starter 
And How much average I can OC my card with unlocked shaders ?
post #8 of 17
dont some people hit like 1000ghz core with 1.2v lol but it def wasnt a 27/7 just a bench
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post #9 of 17
Quote:
Originally Posted by DeLVekk View Post
And How much average I can OC my card with unlocked shaders ?
That depends. Mine unlocked but I couldn't OC to 6970 settings (880/1375) under stock voltage; it was unstable. You just need to OC and find its own limit.
    
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post #10 of 17
My Dirt3 "antilles" 6950 will hit 900c 1400m @ stock voltage too. (No unlock though)
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Overclock.net › Forums › Graphics Cards › AMD/ATI › HD6950 DIRT3 Edition - Overclocking and questions