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Sapphire 7970 DualX OC blue PCB : BIOS and Voltage questions ?

post #1 of 23
Thread Starter 
Hello everybody !

I am new on this forum, but I have a LOT of questions ! biggrin.gif

I bought a Sapphire 7970 DualX OC a few days ago and I discovered that the PCB is blue (not the black one seen on a lot of reviews on the net). Apparently this PCB is not 100% AMD reference whereas the black PCB should be a reference one...

Before knowing that I tried to flash the bios n°1 with the GHz Edition official bios from AMD which seems to be working only with 100% reference boards :
-> it failed and the drivers didn't recognize the card anymore even after uninstall/reinstall
-> I reflashed the bios n°1 with the bios n°2 and the drivers worked correctly again

After that I tried to OC my card at stock voltage and obtained a nice 1175/1600MHz.
Meanwhile, the GPU voltage readings are confusing : MSI Afterburner gives a 1.17V whereas GPU-Z shows 1.258V... which one to believe ?

After that, I tried to push the voltage to gain extra MHz with Sapphire Trixx V4.3.0 and MSI AB, but it seems to be locked.
On the memory side, I can modifiy the voltage with MSI AB, and the reading are correct.

So, I have some questions :
- Is there a "GHz Edition" bios compatible with this card (with blue PCB) ?
- Can someone post a save of the bios n°1 of the Sapphire 7970 DualX OC blue PCB card ? I did my own save with GPU-z before trying to flash with GE bios but the file is corrupt rolleyes.gif
- How to modifiy the GPU voltage ?
- How to read the GPU voltage (which software to believe) ?

Thanks in advance and sorry for english language which is not native for me wink.gif

thumb.gif


EDIT : some answers so far
1/ The card is NOT voltage locked, we need to use TriXX 4.4.0b (and even modded version for added MEM voltage control)
2/ the reference of my card is SKU:11197-03-40G -> Sapphire 7970 DualX OC with boost
3/ MSI AB gives a setpoint voltage whereas GPU-Z gives a measured voltage value
Edited by Sky007FR - 10/26/12 at 12:04am
    
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post #2 of 23
This Thread might help :
http://www.overclock.net/t/1265543/the-amd-how-to-thread

& welcome to OCN smile.gif. If you want your rig in your sig, check this thread out:
http://www.overclock.net/t/1258253/how-to-put-your-rig-in-your-sig
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post #3 of 23
Thread Starter 
Thanks. My RIG sig' is up ! biggrin.gif
    
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post #4 of 23
OP what are your stock clocks currently. The first BIOS in your card comes with 950 Mhz core and 5700 Mhz memory clocks . the 2nd BIOS comes with 1 Ghz core and 5800 Mhz memory clocks.

http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&lid=1&pid=1463&leg=0

from the product page

"Its Dual BIOS switch allows users to select the higher performance settings of 1GHz core and 1450MHz memory, making the fastest card in its class. This setting also uses a more aggressive fan profile and raises the limits for maximum overclocking."


You could experiment by moving the BIOS switch to position 2 and checking if that allows voltage control to be enabled. Also 1175 Mhz core clocks is a good overclock and an ideal one because beyond 1.2 Ghz heat and power rise exponentially. You should be more concerned about core and VRM temps, fan speed and noise. For long tem stability keep core temps below 70c and VRM temps below 90c. Test with BF3, Heaven 3.0, 3D Mark 11, Crysis to check if your card is completely stable. Use HWinfo32 to monitor core and VRM temps.
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post #5 of 23
Thread Starter 
My stock clocks are 1000Mhz for the core and 1450/5800 for the memory (switch on bios 2)

Thanks for the advice, i'll try HWinfo32 for monitoring voltage and temps to see if the reading of 1.258V is correct because it seems a bit "high" to me eh-smiley.gif

The card on the offical Sapphire site is different : the name is correct, the cooler is correct BUT the PCB is blue on mine without the AMD logo near the PCI-E connector and the external connectors are different (dual DVI + HDMI + DP vs DVI + HDMI + dual mini DP). I can't find the blue PCB model on Sapphire site (I don't think it is up-to-date)

PS : I have just founded a review with the same blue PCB card ! here

EDIT : in fact my card looks more like this one
Edited by Sky007FR - 10/24/12 at 5:11am
    
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post #6 of 23
Quote:
Originally Posted by Sky007FR View Post

My stock clocks are 1000Mhz for the core and 1450/5800 for the memory (switch on bios 2)
Thanks for the advice, i'll try HWinfo32 for monitoring voltage and temps to see if the reading of 1.258V is correct because it seems a bit "high" to me eh-smiley.gif
The card on the offical Sapphire site is different : the name is correct, the cooler is correct BUT the PCB is blue on mine without the AMD logo near the PCI-E connector and the external connectors are different (dual DVI + HDMI + DP vs DVI + HDMI + dual mini DP). I can't find the blue PCB model on Sapphire site (I don't think it is up-to-date)
PS : I have just founded a review with the same blue PCB card ! here
EDIT : in fact my card is this one

http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&pid=1481&psn=&lid=1&leg=0

Ports are HDMI, DisplayPort, Single-Link DVI-D, Dual-Link DVI-I. this card has the AMD PowerTune technology with Boost functionality. this might be the card you have.
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post #7 of 23
Thread Starter 
Yep it seems this is this one. I will look closely on the card itself to see if there is a part number or a reference that clearly shows which model I got.
    
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post #8 of 23
Trying to use MSI AB and Trixx at the same time will cause the programs to fuss with each other and keep resetting your clocks.

Why the hell are you trying to flash to a ghz BIOS? You already have a card that runs at 1ghz and has a better BIOS setup.

My 7970 OC has the blue PCB and I was able to put a reference waterblock on it, so the changes, if any, aren't phenomenal.

I tried playing with both MSI and trixx for a bit before realizing what the problem was and had to uninstall AB to get my clocks and voltages to stay put. Voltages on all OC cards are, to my knowledge, unlocked with no exceptions. Just keep in mind that this card has a lot of vdroop. While I had my card at 1.21v I would droop down to stock voltage under load. I later upped my OC and I see 1.19-1.21 under load, no issue.
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post #9 of 23
Thread Starter 
Quote:
Originally Posted by Ganf View Post

Why the hell are you trying to flash to a ghz BIOS? You already have a card that runs at 1ghz and has a better BIOS setup.
To experiment ? tongue.gif
The GE bios has differents settings other than frequency. I wanted to test OC'ing with the GE bios on switch 1 and with the standard OC bios on switch 2 to see if there would be any difference in OC'ing performance.
Quote:
Originally Posted by Ganf View Post

My 7970 OC has the blue PCB and I was able to put a reference waterblock on it, so the changes, if any, aren't phenomenal.
According the RWlabs test, the VRM and IC are different from reference.

Here a comparison look at the black and blue DualX OC PCB models :

7970 DualX OC black PCB (official specs) :

source : http://hexus.net/tech/reviews/graphics/37009-sapphire-radeon-hd-7970-oc-dual-x-3gb/

7970 DualX "with boost" blue PCB (official specs) :

source : http://www.rwlabs.com/article.php?cat=&id=708&pagenumber=5
Quote:
Originally Posted by Ganf View Post

I tried playing with both MSI and trixx for a bit before realizing what the problem was and had to uninstall AB to get my clocks and voltages to stay put.
I'll try that !

Could you share your bios n°1 (and maybe n°2 also to be sure that I have to same card/bios) if you have 2min of spare time ? biggrin.gif
    
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post #10 of 23
Can't see crap about what's supposed to be different in those pictures because they didn't take all of the heatsinks off. The only thing I can tell you is that I bought a heatkiller waterblock for a reference 7970 and it hits all of the hot spots, it fits perfectly just like I have a reference card. Myself and everyone else who has watercooled this card.

I'll use trixx to copy my BIOS in about 5 hours or so. Replying to this while eating lunch at work.

I doubt you'll see any higher performance with the GE BIOS myself. Take a look at people's sig rigs who own 7970's, the sapphire OC is a pretty consistent high performer. May not be the absolute fastest, but those cards typically aren't using the GE BIOS either. The Dual-X OC BIOS is a pretty solid piece of work, even with all of the vdroop. If I'm not mistaken the second BIOS automatically adjusts all of the things you see in the GE BIOS when you change your clocks and voltages. But hey, it's an experiment in the name of science, don't let me hold you back.
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