MATRIX 7970/280x CF in 1440/1600p - Experiences

[b3kab3ka]

Hello again, are there any other users of CF of Matrix cards 280x or 7970 in 1440p/1600p?
I'm experiencing major stuttering with Frame Pacing enabled in 13.11 V1/V3 beta drivers.
It's happening in any 3D Application every 2-3 seconds. I will try too record it and upload to youtube later.
Performance is a lot better without Frame Pacing enabled but still a little choppy.

Have anyone experienced it too? Is this famous micro stuttering in ATI setups?

[HiVizMan]

There have been some reports of HD7970 matrix cards doing this - there are a couple of thread one I think you have just posted in? Sorry I can not help further as I no longer have the cards.

[czeslaw]

Is it happening when using only R9 without cf ?

[b3kab3ka]

No, actually without CF gameplay is fine. Not perfect, but minor stuttering isn't bothering at all.
Issues are with CF setup.

[heichalot]

b3kab3ka wrote:
No, actually without CF gameplay is fine. Not perfect, but minor stuttering isn't bothering at all.
Issues are with CF setup.

you really are an understanding man 🙂


if it were me,
for every 1 stutter, I kill a baby bunny

[czeslaw]

Minor stuttering when using only R9 or 7970? Try both cards one by one... maybe one of them is causing issues and the other one is fine.

[b3kab3ka]

Tested them that way too. Cards are perfectly fine without CF. I have previously used 660Ti in SLI and must say that gaming experience based on BF3 was much much better.

Using R9s.

[czeslaw]

I don't know if you want to try, but I would check how it behaves after flashing 7970 U2 and U3 to U2/U3 from your R9 respectively and then crossfire. Just save it to file with techpowerup gpuz and then force flash with atiwinflash from console. Backup your 7970 bioses first!!

EDIT: Maybe I missundertood, U R trying to CF 7970 + R9 or do U have 2xR9 and also asking 7970 users for help?

[b3kab3ka]

2x R9 setup here. Got Double BIOS with U2/U3 versions.

[czeslaw]

What motherboard? Try setting both cards to gen3 / preset3 in bios ... Default gpu to pcie, render standby enabled, multi monitor disabled.

Are 2nd Radeon's fans running while in CF? Try disabling ULPS in registry.