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OCUK forum members 7970 reviews

Got my 2 7970's installed in xfire. Overclocked them both immediately to 1125 core and 1575 mem.

MW3 full detail at 7680x1440 is very smooth.

BF3 High detail st 7680x1440 is performing strangely. The centre screen is choppy but the 2 screens either side are smooth! very odd.

Windows seems much faster in eyefinity. Noticed it straight away.

Pleased so far.
 
Guys, what is your stock Vcore as per MSI afterburner?

Mine shows as 1.112v in Afterburner but drops to 1.067v in game.

The latter is not enough for 1125Mhz..

:confused:
 
That's a hell of a lot of volts for std on a 28nm core :confused:, no wonder they clock so high !

I think someone's gonna get the silicon that needed that :mad:
 
JAKUS said:
Check your PSU 12v rail under load
Click to expand...

It is somewhat odd as this is what I get:

MSIHD7970.png


You can see the voltage to the right (1.087v) is lower than the voltage selected (1.112v). It fluctuates in game around the 1.04-1.06 level.

How do I go about checking my 12v rail? I don't any specific monitoring tools barring what I could find online.

My PSU is a BeQuiet L7 530w which was rock solid with my HD6970 so I can only assume it isn't enough for the extra load the HD7970 requires.

EDIT: Looking at it, apart from the fluctuations it doesn't actually drop in game. It is almost as if the voltage isn't mapped corrected?! Setting 1.112v (which is what mine shows as stock) doesn't "map" to 1.112v on the card itself?!
 
Last edited:
oweneades said:
It is somewhat odd as this is what I get:

MSIHD7970.png


You can see the voltage to the right (1.087v) is lower than the voltage selected (1.112v). It fluctuates in game around the 1.04-1.06 level.

How do I go about checking my 12v rail? I don't any specific monitoring tools barring what I could find online.

My PSU is a BeQuiet L7 530w which was rock solid with my HD6970 so I can only assume it isn't enough for the extra load the HD7970 requires.

EDIT: Looking at it, apart from the fluctuations it doesn't actually drop in game. It is almost as if the voltage isn't mapped corrected?! Setting 1.112v (which is what mine shows as stock) doesn't "map" to 1.112v on the card itself?!
Click to expand...

You will have "probe" or similar with you motherboard software... or you can just use CPUZ hardware monitor (free)

Check the power settings in CCC they may influence power levels ;)
 
JAKUS said:
You will have "probe" or similar with you motherboard software... or you can just use CPUZ hardware monitor (free)

Check the power settings in CCC they may influence power levels ;)
Click to expand...

I will check those out, thanks :)

Powertune was set to +20% and I have tried 0% with no difference.

mcdermotx - 12.1a didn't work at all with my HD7970. It installed the "manager" but not CCC. Rather frustrating as I run Portrait Eyefnity which mean craning my neck to work out anything...
 
2 thoughts, is Afterburner correctly supporting these cards yet ? also I would turn off afterburner voltage control so it does not interfere, just monitor voltage & reboot and try again.
 
oweneades said:
I will check those out, thanks :)

Powertune was set to +20% and I have tried 0% with no difference.

mcdermotx - 12.1a didn't work at all with my HD7970. It installed the "manager" but not CCC. Rather frustrating as I run Portrait Eyefnity which mean craning my neck to work out anything...
Click to expand...

;)

Yep........when I first put it in, I immediately went for a fresh download of the 12.1a, but backed out when I only saw the manager getting ready for install.
Didn't bother trying the 12.1, as I suspect the same will happen, so have just installed the 11.12 7900 driver the main driver select page pointed me to.
 
JAKUS said:
How's the fan noise on these Cards guys ?
Click to expand...

zoomee said:
As long you don't overclock it - trust me, there is NO noise at all - your system fans will be noisier tbh.

It's when you start overclocking it gets higher but even then its next to nothing. I only did a quick test to see what the fan was like at fullwhack - thats loud but you should never have to use it at 100%
Click to expand...

;)
 
JAKUS said:
2 thoughts, is Afterburner correctly supporting these cards yet ? also I would turn off afterburner voltage control so it does not interfere, just monitor voltage & reboot and try again.
Click to expand...

Trying both.

1075MHz is rock solid in BF3 at the "stock" voltage (whatever that really is lol).

Trying 1125MHz again without MSI afterburner interference - didn't work, same result as before.

Interestingly CPUID HW monitor shows my +12v rail at 8.27v.

I am going to put this down to my card not liking 1125Mhz which isn't the end of the world.
 
JAKUS said:
Fan noise sound's a little to good to be true to me ;) what temps will they hold at "silent" speeds ?
Click to expand...

The fan really is silent at idle (well I can't hear it in a Fractal Design Define R3 with the stock fan configuration set to low).

At load it becomes what I would class as audible but TBH you can set your own fan profile in Afterburner if you want to it isn't really a big issue.

Temps for me hold steady at around 77 degrees in BF3 on what I would consider a "low noise" fan profile.
 
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