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Help with 6870 CF

  • Radeon
  • Graphics
Last response: in Graphics Cards
July 9, 2012 11:19:36 AM


So over the weekend I added a 2nd 6870 to my system. It was my first CF attempt.

But the results were simply horrible in all games ( Crysis 2, DiRT 3, Max Payne 3, F1 2011) EXCEPT DiRT Showdown.

1)Dirt Showdown
Singe card 36 Avg
CFX 59

2)Crysis 2
Single card 50
CFX Avg 35-40

3)F1 2011
Single - 50
CFX 47~

4)Dirt 3
Single - 47
CFX 44

AMD x6 1055T @ 3.7
8gb Vengeance
MSI - 890GX - GM65
CARD 1- 1GB HIS 6870(Stock Clock)@8x
CARD -2 1GB Sapphire 6870(Stock Clock) @8x

Top video card to Yamaha 467 AVR Via HMDI >> AVR to 55" TV(1080p) via HDMI

I've tried 12.2 / 12.7

Fresh OS install on different HDD.

Vsync On / Off still no scaling.

Strange thing is when I Run my 22" LG (1650 x 1050) to Top Video card via DVI, No other output in use, all games scale(Except F1, but that seems to be a game issue)

Any help would be greaty appreciated

More about : 6870

July 10, 2012 10:07:01 AM

Have you monitored the cards to see if the GPU is being utilised? GPU-Z and enable logging on the "Sensors" tab (make sure you select different cards on the first tab).
July 11, 2012 4:11:04 PM

The GPU is being used some game 99% on Each GPU , some 100 on 1 and 50~60 on the other.

But why does it scale only over DVI and not when I have it on HDMI to My AVR ?(AVR to TV)