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Curiosity: 6950 & ATI Overdrive

post #1 of 9
Thread Starter 
Hey,

This thread is just made out of curiosity regarding the pityful headroom given to OC the 6950 via ATI overdrive. And yes before everyone mentions to use 3rd party i know, and i am using.

Its usual that the ATI OC is capped lower then other applications will allow, but does anyone have any thoughts as to why it was so low this time? 800-840 is not even worth overclocking.

The only two conclusions that came to my mind were:

1: The card overclocks too well, and AMD didnt want people getting to OC it too much, too easliy. To prevent them from purchasing new GPU's quicker, or updating less frequenctly.

2: The card does infact, not overclock well and they made the headroom so small as to not shorten the cards life-span drastically.

Im just curious if anyone else has any thoughts on this bored at work at the moment, I just bought this card, and this was picking my mind lol.
post #2 of 9
As far as I've gathered from what other people have said on this subject, the reason the limits are so low is that with these limits for a vanilla card so low, other board partners can custom set a bios/driver setting that raises these limits for cards with better cooling solutions, or just companies that are willing to warranty these cards which could possibly die earlier. It gives other manufactuerers the ability to charge a bit more for better overclocking expandability cards. Look at XFX, they sell like 2 or 3 different models that use a stock PCB and stock cooling, for ~$15-50 more for the higher stock-clocked cards. Then MSI has the crazy FrozrIII cards and whatnot that are set on their bios to be overclocked a lot higher in CCC.

You can edit the tag of what the CCC limits of your card (with a new flash obviously) should be with RBE, but according to their help file, it's kind of a crapshoot, since they're encrypted or something like that.
post #3 of 9
You can use the registry hack method in my sig to increase CCC limits.

Most cards can go past 840, but it is not a guarantee. So manufacture has to set a limit that does not make them liable or have RMA flying left and right. Even the OC version of cards are mostly set at 840. That would be my take on it.
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post #4 of 9
I can adjust my TFIII in CCC to +13000mhz core if I choose...

*there ways to unlock the CCC limits for any GPU
post #5 of 9
Thread Starter 
I just thought id Clarify, that im not actually looking for a way to increase the cap on CCC lol, I was just curious if anyone had any thoughts on why the cap was so much lower on this card

Its usually about 100 or so core extra is where the cap is. Not a big deal, as i mentioned ^^ i was just curious, if anyone heard anything, thanks for the replies though.
post #6 of 9
Quote:
Originally Posted by CL3P20 View Post
I can adjust my TFIII in CCC to +13000mhz core if I choose...
Are you saying you see 1300mhz in CCC without manipulating it? Or are you saying once you get CCC to higher limits you can push it to 1300mhz without any volts?
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post #7 of 9
CCC gives me a core slider limit of 1300mhz ..and something like 1600mhz for mem slider limit.

* I have flashed my TFIII 6950 with an edited BIOS that allows for this
post #8 of 9
Quote:
Originally Posted by CL3P20 View Post
CCC gives me a core slider limit of 1300mhz ..and something like 1600mhz for mem slider limit.

* I have flashed my TFIII 6950 with an edited BIOS that allows for this

The best BIOS for the TWFIII is this one:http://www.ocdrift.com/2011/04/msi-r...locking-guide/

CCC limit is raised & power delivery cap is busted.
I think shaders are unlocked as well in that one.
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post #9 of 9
Ah ! ok. So you flashed the card with a different BIOS. I thought it comes from factory with that BIOS. Now would not that be cool !!
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Crucial SSD for OS Samsung Spinpoint F3 Asus XSPC water block, 360 radiator, and 720 reservo... 
CoolingOSMonitorKeyboard
GPU cooling - XSPC Razer full GPU blocks Win 7 Home Premium Asus PB278Q 2560 X 1440p ISP Logitech G15 
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