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How to enable additional shaders on Radeon HD 6950

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I've just loaded the 6970 bios into RBE
The voltage register reads 1000 / 900 / 1150 / 1175
Could I just replace the offending 1175 in vid4 with a safer 1150 and use this modified 6970 bios instead as I know it already works for me and allows me to overclock up to 950 and 1450 with +20% PC ?
 
I'll answer my own question! No i can't - Just tried it but it didn't work - RBE seems to have no effect on the core voltage - Whatever I put into those 4 boxes, I still see 1100 with a 6950 bios and 1175 with a 6970 bios when I look in GPU-Z or TRIXX or AB
 
Gaul said:
yup, flash with asus6970 bios and edit with RBE
Click to expand...

What is your core voltage at that let's you hit such high numbers?
 
Gracias
 
Hi all,

Just brought 2 Asus HD6950s they both unlock just fine but 1 of the cards has major artifacts no matter what clocks I run, which is really disappointing since I wanted to get some descent numbers with the 2 cards in crossfire on a few benchmarks :(
 
Yesterday I bought a Sapphire 6950, I applied a modded 6950 bios to unlock the extra shaders. The process was successfull. The clocks are still the default 6950 ones. I runned 3dmark 11, vantage and uniheaven benchmarks, no artifacts. I'm planning in overclocking the card to see if it can handle the 6970 clocks, and if it does, and it is worth it, then flash to 6970.
 
Sebascenso said:
Yesterday I bought a Sapphire 6950, I applied a modded 6950 bios to unlock the extra shaders. The process was successfull. The clocks are still the default 6950 ones. I'm planning in overclocking the card to see if it can handle the 6970 clocks, and if it does, and it is worth it, then flash to 6970.
Click to expand...

Why flash to the 6970? If you can achieve and succeed on the 6970 clocks, leave it as it is. Flashing to the 6970 could just be risking your card, but if that's the chance you are willing to take, then so be it. You don't need the extra voltage (1.6v) on the RAM.
 
that's why I wrote "if it is worth it". I didn't knew about the extra voltage. Is the core in the 6970bios also with extra voltage to reach 880mhz compared to the 6950?
If it ain't worth it, then I will keep the bios I have right now, and just oc to achieve better performance.
 
Sebascenso said:
that's why I wrote "if it is worth it". I didn't knew about the extra voltage. Is the core in the 6970bios also with extra voltage to reach 880mhz compared to the 6950?
If it ain't worth it, then I will keep the bios I have right now, and just oc to achieve better performance.
Click to expand...

chill, just saying. The 6970 BIOS has 1.175v compared to the 6950 BIOS with 1.1v. For now, you can use either MSI Afterburner or Sapphire TriXX (recommend) to go beyond the CCC limits. See how that goes with the 6970 clocks.
 
Jeager said:
Which version of Trixx do u use ?
I dont have throlle with 10.12a@20% and Trixx 3.02 (i will check tonight to be sure at 100%)



You'r right, my 6950 is fine in every bench/games at 900@default voltage but I have random freeze in SCII (and every times a have to reboot :()
Click to expand...


I had that too until i used modded 6950 bios instead of ful 6970 bios.
If u havent done so yet, u should try it out. :)
 
Shrike said:
I had that too until i used modded 6950 bios instead of ful 6970 bios.
If u havent done so yet, u should try it out. :)
Click to expand...

Good to know. I'm waiting a few more days for my flash :)
 
I've just realised that I can get better scores in 3DMark11 with the modded 6950 bios than I did with the 6970 bios!

Previously with 6970 bios I overclocked in CCC to 950/1450 +20% 3DMark11 score = 4916 (GPU score = 5296)

Now with 6950 shader only bios overclocked in Trixx to 950/1450 (+20% set via CCC b4 loading Trixx) 3DMark11 score = 5029 (GPU score = 5487)

Hotfix drivers used for 6950 score
6950 bios changed vids 3 and 4 both to 1150 - but I'm still not sure that this has any affect as GPU-Z and Trixx still only show maximum voltage as 1100
 
Whoops! said:
I've just realised that I can get better scores in 3DMark11 with the modded 6950 bios than I did with the 6970 bios!

Previously with 6970 bios I overclocked in CCC to 950/1450 +20% 3DMark11 score = 4916 (GPU score = 5296)

Now with 6950 shader only bios overclocked in Trixx to 950/1450 (+20% set via CCC b4 loading Trixx) 3DMark11 score = 5029 (GPU score = 5487)

Hotfix drivers used for 6950 score
6950 bios changed vids 3 and 4 both to 1150 - but I'm still not sure that this has any affect as GPU-Z and Trixx still only show maximum voltage as 1100
Click to expand...

I was having the same issue with my Sapphire HD 6950. Changed VID4 with RBE and nothing changed. VID3 was the one showing 1.1 default.

Started using MSI Afterburner to increase core voltage, and then acquired bios with RBE. VID3 was the one being changed.

So my advice is to only change the VIDn that defaults to 1.1 and see how that works.

Oh, and I ran some quick tests with 11.1a before going to work and noticed good improvement. Can post numbers later.

Sometimes the day job really gets in the way of the really important things. :cool::laugh:
 
Whoops! said:
Now with 6950 shader only bios overclocked in Trixx to 950/1450 (+20% set via CCC b4 loading Trixx) 3DMark11 score = 5029 (GPU score = 5487)
Click to expand...

Do you get the same score after a reboot (with Trixx on "Start at Winstart")?

+20% and save BEFORE loading TRIXX works here also - But when I restart, Slider is still on +20% but it feels like 0% in scores because of throtteling down...
 
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I just got in a second Gigabyte 6950 for a friend of mine and I have been testing it along side my Gigabyte 6950. The cards look the same, and are model numbered the same, but seem very different in terms of overclocking, voltages, power control, etc. For example, My card uses VID4 for 3D voltage, the new card uses VID3. Afterburner can adjust the new cards voltage, but not my card. My card reads 1.065v for the stock voltage in Afterburner, Komubustor, etc, while the new card reads 1.100v. I overclock my card with Trixx and have NEVER seen the card throttles its clock speeds down. With the new card I must set my clocks, close Trixx, then apply 20% powertune in CCC otherwise the card throttles it speeds down under load. I've just started messing with the second card, so maybe tonight after work I will get some more comparison info, but this goes to prove that even two cards, same model, from the same manufacturer, can be very different cards. This is why I suggest using your cards EXACT bios and modifying it. Who knows if the cards may use different ram/timings/ram voltages or anything else for that matter.
 
Hello guys. I have just flashed my Powercolor 6950 with 6970 BIOS. Memory and shaders are just like they should be: 1375 and 1536 but GPU clock remained 800, though GPU-Z shows the default of 880. Can you please tell me why it is so?
p.s.: sorry for my english, i am from Ukraine :)
 
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alex2112 said:
Hello guys. I have just flashed my Powercolor 6950 with 6970 BIOS. Memory and shaders are just like they should be: 1375 and 1536 but GPU clock is 800 anyway default clock in GPUz is 880. Can you please tell me why it is so?
p.s.: sorry for my english, i am from Ukraine :)
Click to expand...

Sound like you still go with 6950 Clocks - probably from before flashing....

Take a look at ATIs Overdrive and see if Overdrive is activated with 800 GPU clock....
 
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