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Help with Gigabyte 7950 WF 3X

DarthOps

DarthOps

DarthOps

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Joined
27 Sep 2008
Posts
29
I recently bought the above card from overclockers (GV-R795WF3-3GD) and noticed that I'd got one that is clocked at 1000MHz and voltage locked at 1.25v.

It is also using a 7970 pcb (8 + 6 pin connector).

As far as I'm aware it has the FZ1 bios that isn't available on the website anymore.

Anyway....

Can someone tell me

1) If flashing a previous bios will unlock the voltage control or if this is locked at the hardware level

2) What is the recommended bios for this card

3) Is it possible to flash a 7970 bios on it, If so, which one works? (I know that this won't unlock shaders etc but I've heard of other reasons for doing so)

4) Any overclocking recommendations for the current bios? (My ASIC quality is around 65)

P.S. I take it that this board has a dual bios switch so I can flick between them if I manage to break one!?
 
What I can tell you [email protected], it won't go much faster at all on air even if you could get another .05v on so you can't add much more voltage anyway with only benchmarking seeing any small benefits, for gaming, you won't get anything imo

Get Trixx and see if it unlocks voltage as your AB might not be unlocking for one reason or another, off of memory, there is a file in the AB directory that contains 'oem' in it, delete or rename it(for ease of returning AB back the way it was).

Look and check for the switch, it's next to the CrossFire pins if it's there.
 
I have 2 of these, first one i got December last year on F43 BIOS and 2nd i got on monday with FZ1.

The newer is clocked at 1000MHz like yours, i swear its a 6 + 6 pin connector though. The Asic quality on the newer one is 71, the old one is 65.

Im not sure about Bios, their website explains roughly which bios number works with each revisions of the card, not that the ones they have available seem to match the description. I havent seen much about flashing this with a 7970 bios though so im not much help to you.
 
Weird, I deffo had to use the extra connector for one of the power connectors!

I just remembered that there might be a flag in a cfg file that I have to change in afterburner so that I can unlock the voltage slider. I'll have a look!

I'll look into trixx as well.

Thanks peeps
 
Mine arrived with the FZ1 bios and no program can alter the voltage - there is no actual change according to GPUZ - FZ1 also runs the VRMs far far too hot.

After flashing the F43 bios, I dropped the voltage to 1.2V in afterburner and set the clock to 1150 and the VRMs now run 30C cooler (down from 95 to 65) and the core sits at 65C @ 45% fan

ASIC 67% with 6+6 board
 
Mine came clocked at 1000mhz and its currently stable at 1115 and 1500 on the memory.

Any higher and artifacts appear.

Mine has 6 and 8 connector. Weird as most have 6+6.
 
Nickjf20 said:
Mine arrived with the FZ1 bios and no program can alter the voltage - there is no actual change according to GPUZ - FZ1 also runs the VRMs far far too hot.

After flashing the F43 bios, I dropped the voltage to 1.2V in afterburner and set the clock to 1150 and the VRMs now run 30C cooler (down from 95 to 65) and the core sits at 65C @ 45% fan

ASIC 67% with 6+6 board
Click to expand...

+1

Exactly the same as me. These cards will have the FZ1 bios which defaults to 1000mhz and 1.25v.

Nothing wrong with them at all, they are as Gigabyte intended. However for some reason they changed the bios and they now ship the cards at 900mhz.

I flashed to F43 bios and as stated temps and voltage dropped massively. You do not (should not) need 1.25v to run 1000mhz. 1200mhz maybe, but think Gigabyte were playing it a bit too safe with 1.25v to make sure all cards clocked at 1000mhz.

My VRMs were 90c before flashing, now 65 as well. Same results with the core, was hitting 69c, now 58-59c.
 
I attempted to flash F43 but it failed, (no display on boot) using ati flash (bootable usb)

I've reverted to FZ1 again and all is well but I'd rather get on F43, any idea why it would be failing? :(

I have a 7970 (8 + 6 pin) pcb, could that be the reason I can't flash it? Only other thing I can thin of is a corrupt F43 image!
 
I followed this guide. You don't need to rename the bios file to *****.rom as the guide suggests. Just put your bios file in the winflash folder and follow the steps exactly and replace *****.rom with your bios file name. This worked for me.

No idea why it would fail. Can only suggest downloading another copy of f43 from gigabyte.

I have 7950 pcb with 6+6 pin connectors.
 
I just got home and flashed both ROMs on each card, 1st card went from F42 to F43, the 2nd went from FZ1 to F43 and it appears i have full voltage control over both cards. Before i could only control voltage on 1st card (F42) in CF, i have switched them over so the card that was on FZ1 is now primary card. ATiFlash worked flawlessly.
 
Just to check. How do you know you have FZ1 , have you checked the bios number in GPU-z or are you just assuming you have FZ1 due to 1000 clock speed.

There is apparently a new 1000 MHz bios - FX0 which is hardware voltage locked. This card has trouble accepting other bios versions and even if you flash it they are hardware locked. The original FZ1 cards were only locked via the bios, so flashing them unlocked them.
 
in ATiFlash i used command "atiflash -ai" and it showed the BIOS version xxxxxx.FZ1, once flashed it read xxxxxx.F43
 
grizzla said:
in ATiFlash i used command "atiflash -ai" and it showed the BIOS version xxxxxx.FZ1, once flashed it read xxxxxx.F43
Click to expand...

Any tips on flashing? Last night i tried and got a "Unknown SPI" error

I used this tutorial:
http://www.overclock.net/t/1353325/tutorial-atiwinflash-how-to-flash-the-bios-of-your-ati-cards

This is the location to where the .exe resides
C:\Users\Loxa\Downloads\ati_winflash_2.0.1.18

So then i did
cd C:\Users\Loxa\Downloads\ati_winflash_2.0.1.18

atiwinflash -f -p 0 R795W3GD.F43

And then i got the error..
 
most of newer GB 7950 have hardware locked voltage,so no chance of unlocking it,unless you want less v on core,not 1.25,then flash to any bios with 900Mhz and have 1.09v instead of 1Ghz and 1.25
mine is hardware locked,and i cant even check VRM temps as gpu z not showing them..
 
Mario said:
most of newer GB 7950 have hardware locked voltage,so no chance of unlocking it,unless you want less v on core,not 1.25,then flash to any bios with 900Mhz and have 1.09v instead of 1Ghz and 1.25
mine is hardware locked,and i cant even check VRM temps as gpu z not showing them..
Click to expand...

Mine too.
Have flashed bios f43 so i have 1.09 instead of 1.25v.
on the pcb it v1
version 1 pcbs hardware locked?
 
Right, so....

It would seem that I have the FX0 bios not the FZ1.

Apparently going from FX0 to F43 does flash but it stops the HDMI port from working, I haven't tried it but apparently the DVI connection still works.

Surely that has to be a bug?

I wonder if it's possible to go FX0 -> FZ1 -> F43?

Does anyone have a dump of the FZ1 bios?
 
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