Asus HD 7970 DirectCU II Top voltage Unlocked - by DJ_OXyGeNe_8

There is no destruction cards? Voltage remains 1.256v? Neda is already lifted? How many volts is safe for the core? Thanks

 

@kapu with matrix bios 1240 Mhz? or default.

You can upp memory 1750-1.650V is ok

@Smugl my card is ok for 1 month with 1.256V. I think it's in safe area, because temp is ok too. Now its 30-32C - with games 60-65C

 

There is no way to bypass locked bios 7970 DCII Top, except Hotwire? How many volts can I ventured into the core?

 

Default bios.

temps 34 C Idle , 64C Load after OC ( I dont think they changed ).

 

Hey Kapu,
What is your BIOS version? Give here or GPU-Z screen
Is possible that some versions are unlocked bios?

 

There is no software way to unlock the card as far i know.


Card is not OCed right now , since there is no need for it

 

Kapu@
He hanged yours Asus 7970 DirectCU II Top? Because your card includes bios from Gigabyte.Your profile contains Gigabyte HD7970 Top, this version does not even exist.

 

@kapu, are u sure you're using 7970 Top?

 

Full Unlocked with 1.4V

Here is the full story. There are 2 methods to unlock cards and found both of them

http://www.overclock.net/t/1390275/...ssflash-to-matrix-project-and-gen-info-thread

 

Hey what bios did you use to completely unlock the voltage at 1.4V? There is already 1.4V at the core of many?

 

Damn 1.4v is a lot..

Anyway, a few pictures here for comparison.

3dmark2013 1250/1700 @ 1.3v

3dmark11 same clocks

1205/1700 @ 1.250v

 

@Smugl check the thread I did give the link

http://www.overclock.net/t/1390275/...ssflash-to-matrix-project-and-gen-info-thread

And here is my score

 

I wouldn't go above 1.25-1.3V for 24/7 operation honestly.

 

Indeed.. I can vouch for that. Not good.

Try to keep it at 1.25v maximum, more than that and you'll risk reducing the life of the card.

 

These are just tests guys, not work all time

1.256 - 1275 V - 1180/1200Mhz ok.

 

Thanks to OP for this, allowed stable 1200 on core and beat the 680 in all bench's tested to far.
For some reason gputweak is bugged for me as when I try to save a profile it knocks vram voltage to 1.5 instead of 1.6 and doesn't load on startup. Tried two different versions.
Instead I use a custom preset in ccc (modified extended version) as this allows me to fix the funky hdmi issues when running dual displays caused by too low vram clocks (was 300/150 now 300/450) as well as OC to 1200/6600, along with afterburner for monitoring/fan curve.
Seems to be no way of monitoring vrm temps on this card?

 

measure with a multimeter..

your 7970 DCII is vanilla or Top Edition?
rev your gpu is ... ?? (your stock bios is 015.012.004.xxx, 15.017, 15.021 or 15.023 ??
bios version?? (voltmod= bios 015.012.XXX + GPU Tweak v.2.2.1.4 ??)

I use Catalyst 13.11 beta v.1 on Windows 8.1

this is my card

 

Can a multimeter read temperatures?

Mines a Top edition, no idea what revision is or what stock bios was (I saved as Tahita) It was new from a top uk site so if I had to guess I'd say the latest.
GPUZ says ASIC quality is 68%. Likewise running 13.11 beta 1 but win7x64.

I have encountered a new issue today however; as stated earlier I'm using ccc for my core/mem clocks but on boot this conflicts with afterburner's fan control. ccc sees my user defined curve as manual and forces 50% until I untick the box then reset afterburner fan control.

Guess I need to find a way to edit the stock auto setting to be more aggressive....