[Klinkey]

Right so i'm fairly familiar with CPU overclocking and motherboard/ram and all that jazz.

but.... only graphics card i ever overclocked was my 4350 ;P

so finally after much deliberation and failure attempting to unlock my 6950 im going to overclock it
what should I aim for in terms of core speed and memory speed, which is better e.t.c.

I am aiming for a decent overclock which will give me noticeable performance gains when gaming but does not cost too much voltage.

My graphics card has very good cooling capabilities.

EDIT: btw i am using trixx

EDIT2: Right so now i have a stable (i think) overclock at 975-1350 1.18v.

is this a safe voltage? it ran furmark max 10 minutes, gputool and MSI combustor without problems. max temp 78

aim for higher core or memory?

 

[LA_Kings_Fan]

Aim for 880 core / 1375 memory clocks ... that's HD-6970 levels and should be easy for that DIRT3 card to hit w/o messing around much if at all with voltage settings. One review I read had the MAX OC they could get at 910/1475 so you know.

Here's some reading for you ...
http://www.overclock.net/amd-ati/110...rt3-ocing.html

http://www.hardocp.com/article/2011/..._card_review/3

 

[devvfata1ity]

try 900-core and 1400-Memory at 1.10-1.12v. It will make it as fast if not faster than a HD 6970

 

[Klinkey]

ok thanks +rep

im at 900-1350, is it better to overclock memory or core?

also is there a gpu equivalent of prime95? what should i use

 

[Stuuut]

Quote:

Originally Posted by Klinkey ok thanks +rep im at 900-1350, is it better to overclock memory or core? also is there a gpu equivalent of prime95? what should i use

I used Fumark, 3dmark11, 3dmark06 and 3dmark vantage for testing my OC.

Shame tough your card didn't unlock

how did you try to unlock it?
Save BIOS 1 alter it to unlocked shaders and flash to BIOS 2? Did you check what was on BIOS 2 already? Mine was already unlocked from factory.

 

[Klinkey]

Quote:

Originally Posted by Stuuut I used Fumark, 3dmark11, 3dmark06 and 3dmark vantage for testing my OC. Shame tough your card didn't unlock how did you try to unlock it? Save BIOS 1 alter it to unlocked shaders and flash to BIOS 2? Did you check what was on BIOS 2 already? Mine was already unlocked from factory.

well i swapped to 2, checked, not unlocked, altered the bios to 6970 shaders, overwrote it, didnt get any errors or anything, everything worked. turns computer on, 1408 shaders

 

[devvfata1ity]

Quote:

Originally Posted by Klinkey ok thanks +rep im at 900-1350, is it better to overclock memory or core? also is there a gpu equivalent of prime95? what should i use

Use Furmark or MSI Kombustor for stress testing. Your clocks are good. You will see more benefit from core overclocking than memory OCing. Cayman GPUs are not bandwidth limited. ~170 Gbps bandwidth is plenty enough

 

[devvfata1ity]

Quote:

Originally Posted by Klinkey well i swapped to 2, checked, not unlocked, altered the bios to 6970 shaders, overwrote it, didnt get any errors or anything, everything worked. turns computer on, 1408 shaders

Most likely you have got a locked GPU like me. Whatever you try it wont unlock. Although as a alternative method, download W1zzard's script from TPU and use it to mod your original bios and then flash using winflash. You might just get lucky

 

[Klinkey]

thanks will try it

also post a link?

finding it hard to find what you mean :/

 

[Klinkey]

if you mean by using RBE then ive already tried that :/

 

[Klinkey]

Right so now i have a stable (i think) overclock at 975-1350 1.18v.

is this a safe voltage? it ran furmark max 10 minutes, gputool and MSI combustor without problems. max temp 78

aim for higher core or memory?

 

[Ken1649]

Quote:

Originally Posted by Klinkey;15246152
Right so now i have a stable (i think) overclock at 975-1350 1.18v.

is this a safe voltage? it ran furmark max 10 minutes, gputool and MSI combustor without problems. max temp 78

aim for higher core or memory?

That's where I would stop at that voltage and core/memory clocks. In most cases, increasing memory higher than 1375 will result in diminishing return, meaning, it will lower your performance when ECC kicks in.

 

[Klinkey]

might be where i have to stop ;P got artifacting in gputool at 1000 mhz, might raise memory to 1375 see what happens

 

[Ken1649]

Quote:

Originally Posted by Klinkey;15246236
might be where i have to stop ;P got artifacting in gputool at 1000 mhz, might raise memory to 1375 see what happens

Smart call. Without the benefits of better performance, it's uneccessary to put more stress to the core/memory and dissipating excessive heat. Memory to 1375 is very doable. Take a baby step of 5 MHz, artifacts is a good sign of instability and time to backdown. Avoid BSOD if all possible.

 

[Klinkey]

975-1375 seems fine. might change when i hardcore game but oh well
would you recommend me try lower the voltage or is 1.18 fine (stock 1.1)

 

[Ken1649]

Quote:

Originally Posted by Klinkey;15246287
975-1375 seems fine. might change when i hardcore game but oh well
would you recommend me try lower the voltage or is 1.18 fine (stock 1.1)

Yes, find lowest possible voltage to sustain the OC.

 

[devvfata1ity]

Quote:

Originally Posted by Klinkey;15245948
thanks will try it

also post a link?

finding it hard to find what you mean :/

Refer to this guide I have posted here http://www.overclock.net/amd-ati/1088374-my-hd-6950-2gb-ocing-modding.html

You will get all the links too

 

[Klinkey]

nah it didnt unlock

guess ill just stick to my overclock.

everything again worked fine, no errors, except i have to say the unlockrom thing is a bit wierd. the bars go a third of the way then it closes but doesnt give me errors.

but still 1408 shaders

 

[Klinkey]

could it be antivirus? (antivir) thats blocking it somehow?

 

[devvfata1ity]

^ Are you running winflash with administrator privilege?