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HD7950 revised with reference HD7970 PCB club - Page 73

post #721 of 847
I've been Ocing my IceQ 7950 for awhile, and I've settled at 1250/1650 at stock voltage. Guess that 1.25V that is set at stock because its the boost version blows that out of proportion. But still, I can say it was done at stock voltage wink.gif. It has a 6 + 8 pin PCB. Going to buy some Coollaboratory Liquid Ultra and add it on. Its not the IceQ X2, which is the dual fan one, but its the single awesome reference fan version.
post #722 of 847
Quote:
Originally Posted by kahboom View Post

Flashing with a regular or any 7970 bios for that matter would still come up as 1002-679a even though you can flash 7970 bios, i have many times and shaders do not unlock, most likely that the chips are laser cut or a hardware mod such as a chip that hinders the extra shaders useless. Only clocks such as core and memory and limits for core and memory and load voltage work when flashing. Things to consider when flashing is what type of ram chips are on your 7950? Only Hynix ram is used as far as i know for 7970's which clock higher and have a higher default voltage. What card do you have? 6+6 pin power or 6+8pin power. Boost or non boost card?

Yep, it doesn't unlock anything. The firehurricane unlocking crap is a joke- in the screenshots they provided, the font doesn't match for shaders LOL- horrible photoshop edit.

On another forum, someone found that a 679a HIS 7970 bios, but here's my info to show that it is really not a 7970 bios, a heads up if anyone gets confused and tries it:
Quote:
Ah ok,
There was a thread in another forums about the HIS 7970 bios with device ID 679a (same as out 7950), but it is really just a 7950 bios. Atiflash said it was a tahiti pro (7950) NOT tahiti XT.
Even the picture is wrong, showing 7950 LOL:
http://www.techpowerup.com/vgabios/126754/his-hd7970-3072-120816.html

Even when I look at the file with a hex editor, though the page says 1375 ram speed (7970 speed), it's actually 1250 in the bios (48 e8 01 in reverse hex)



The real 7970 bioses either don't work for my 6 +6 card, or break hdmi output.
post #723 of 847
its a twin frozr 3 new revision boost edition on 7970pcb 6+8 pin. base clock of 880mhz boost clock of 960mhz memory of 1250mhz and stock volatage in AB measured 1.188v
post #724 of 847
Quote:
Originally Posted by PjMpire View Post

its a twin frozr 3 new revision boost edition on 7970pcb 6+8 pin. base clock of 880mhz boost clock of 960mhz memory of 1250mhz and stock volatage in AB measured 1.188v

i have this one too
    
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post #725 of 847
so there are literally no 7970 bios out there with 679a ID. unless you can flash 6798 bios over/?
post #726 of 847
Quote:
Originally Posted by PjMpire View Post

so there are literally no 7970 bios out there with 679a ID. unless you can flash 6798 bios over/?

Flashing a 7970 BIOS will not gain you anything, just different default clocks and volts. You still have the same chip, there is no unlocking shaders like the early 69xx series.
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post #727 of 847
well i guess unlocking the shader is the only pssibe benefit if thats even possible, i dont see the point in flashing the 7970 bios over then if it just unloks the voltages. i can already unlock them in AB with 7950 bios.

im also experiencing problems overclocking the memory in a crossfire setup with 2 msi twin frozrs.

with a single card i can achieve 1575mhz easily however in crossfire i cannot hit 1400 stable without crashes.

anyone know why?

im convinced its something to do with crossfire
Edited by PjMpire - 5/27/13 at 1:52pm
post #728 of 847
Quote:
Originally Posted by PjMpire View Post

well i guess unlocking the shader is the only pssibe benefit if thats even possible, i dont see the point in flashing the 7970 bios over then if it just unloks the voltages. i can already unlock them in AB with 7950 bios.

im also experiencing problems overclocking the memory in a crossfire setup with 2 msi twin frozrs.

with a single card i can achieve 1575mhz easily however in crossfire i cannot hit 1400 stable without crashes.

anyone know why?

im convinced its something to do with crossfire

Like I said, shaders cannot be unlocked on the 79xx series, the chips are laser cut.

As for the crossfire issue, do both cards hit 1575Mhz by themselves? Have you tested each card separately? Maybe one needs more voltage for the memory.
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post #729 of 847
Quote:
6. SAPPHIRE 100352-4L and Sapphire 21196-00-20G [/SIZE][/B] 6+6 power connector with 5+1 phase power design

So is 5+1 phase design inferior to the rest of the reference 7950's?thinking.gif
post #730 of 847
Quote:
Originally Posted by BBEG View Post

Do we know for sure which of the 7950s on 7970 boards are voltage unlocked? It seems the MSI and HIS cards are...

How do you tell?

I can adjust the core mV voltage in MSI afterburner if that is the indicator. I have an MSI TF3 7950 card that has a 7970 PCB. 8+6 power. Have had the card for about 7 months.
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