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7970 xfire + 2500k BF3

chipachap

chipachap

chipachap

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Joined
23 Dec 2011
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Ireland
I think this is the right area! A lot of people (including myself) were getting bad xfire utilisation at 1080p in BF3 and a lot screen tearing/micro stuttering. I've been playing around with settings and for 2 maps my gpu's never went below 95% whereas before they would dip into the 70's sometimes, giving me bad fps.

To partly fix this I used a 3rd party Turbo Boost feature but I'm almost sure what played the difference was Windows Aero, It switched it to a basic theme for me and the micro stuttering is only slightly more than 1 card and xfire utilisation is kept 90+ on ultra preset, only uses 85+ for 2XMSAA, it seems like the cards know they don't need to go full whack to keep 60+ fps though.

Just put this up for anyone searching for help through the forum or Google, still looking for a definite fix.
 
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Is your 2500K overclocked or on stock speed? I recall bit-tech mentioning that even they got higher frame rate for the 7970 on a overclocked SandyBridge than on stock speed, despite the games isn't CPU limited. May be with fast cards like these, you simply need more CPU grunt to improve the scaling.

Also, is your moniter a standard 60fps one or a 120fps one? If it is just a standard 60fps one, I would suggest you use the latest beta version MSI Afterburner and use the frame rate cap feature to cap the the frame rate at 60fps. The micro-shuttering could be caused by frame rate going up and down too quickly, even if it is beyond what your screen can display (due to it is 60fps max). If you cap the frame rate at 60fps, meaning it would probably keep the frame rate constant at 60fps, thus micro-shutter might not happen.
 
I've got my 2500k at stock with one 7970 at full ccc overclock and it stutters like mad but if I put vsync on it runs butter smooth even with full ultra settings.
 
Make sure you guys have these...

AMD Catalyst™ 12.2 Pre-Certified Driver download link:
http://support.amd.com/us/kbarticles...ieddriver.aspx

AMD Catalyst™ Software Suite Version 12.2 Pre-Certified Driver Release Notes
http://support.amd.com/us/kbarticles...Certified.aspx
Highlights of the AMD Catalyst 12.2 Pre-Certified Driver Windows release includes:

NEW FEATURES

Windows 7 and Windows Vista support for the AMD Radeon HD 7900 Series and AMD Radeon HD 7700 Series
Enables support for Windows 7 64-bit/32-bit and Windows Vista 64-bit/32-bit.
Windows XP support will be made available in AMD Catalyst 12.4.
IMPROVEMENTS

Super Sampling Anti-Aliasing is now available for DirectX® 10 and DirectX 11 applications
Supported on the AMD Radeon HD 7900 and AMD Radeon HD 7700 Series.
Users can now enable Super Sample Anti-Aliasing and Adaptive Anti-Aliasing through the AMD Catalyst Control Center for DirectX 10 and DirectX 11 applications.
Applications must support in game Anti-Aliasing for the feature to work (Forced on Anti-Aliasing through the Catalyst Control Center is not supported for DirectX 10 and DirectX 11 applications).
AMD Eyefinity 2.1 technology enhancements
Custom resolutions – users can now choose from a much larger set of display resolutions for their AMD Eyefinity configurations.
Dynamic Configuration Changes: Switching between different display configurations (when physically plugging/un-plugging displays) will occur automatically by loading the appropriate profile.
HydraVision enhancements: The Windows Task bar can now be moved and resized based on users preference.
Profile Manager improvements: Users can now create multiple Display profiles, enabling users to seamlessly switch between various AMD Eyefinity and Display Configurations.
RESOLVED ISSUES


Resolved Issues for the Windows 7 Operating System

This section provides information on resolved known issues in this release of the AMD Catalyst 12.2 Pre-Certified software suite for Windows 7. These include:

Random texture flickering is no longer experienced when playing Tom Clancy HAWX with Crossfire and Eyefinity enabled.
Random texture flickering is no longer experienced when playing Call of Duty – Modern Warfare 3 in a Tri-Crossfire setup.
Random texture flickering is no longer experienced when playing Dragon Age 2 with Crossfire and Vsync enabled.
Skipping the in-game cinematics when running Dragon Age 2 in DirectX 11 mode no longer causes random stuttering.
The Battleforge DirectX 10.0 benchmark no longer experiences intermittent crashes when run in Tri-Crossfire mode.
Random flickering is no longer observed when playing Battlefield – Bad Company 2 in DirectX 11 mode.
Playing back h.264 interlaced BluRay content no longer displays intermittent green flashing.
The system no longer experiences random hangs when playing back BluRay 3D content in Duplicate mode.
Starcraft II no longer experiences random system crashes when exiting a campaign in certain Crossfire configurations.
Batman – Arkam City no longer experiences intermittent system crashes when run in DirectX 11 mode.
Changing Crossfire settings no longer causes a random system crash.
A system crash is no longer experienced when playing Rage with Crossfire enabled.
Crysis Warhead and Battlefield – Bad Company II no longer experience random crashes in certain Crossfire configurations.
Playback of BluRay 3D content now correctly uses hardware acceleration.
Random texture corruption is no longer displayed when playing Dirt III in DirectX 11 mode and with anisotropic filtering applied.
Resolved Issues for the Windows 7 Operating System

This section provides information on resolved known issues in this release of the AMD Catalyst 12.2 Pre-Certified software suite for Windows 7. These include:

Windows Aero options are available after installing the driver.
Background textures in World of Warcraft Cataclysm no longer experience random flickering in some Crossfire and Eyefinity configurations.
KNOWN ISSUES

Known issues under the Windows 7 operating system

The following section provides a summary of open issues that may be experienced under the Windows 7 operating system in the latest version of AMD Catalyst. These include:

Vsync may be disabled after task switching when playing Rage.
A black screen may be displayed when running Civilization V in certain Eyefinity configurations.
Playing Far Cry 2 at high in game settings may generate a system hang.
Poor performance may be experience when playing Dirt 3 in DirectX 11 mode at low resolutions with Crossfire enabled.
Known issues under the Windows XP operating system

The following section provides a summary of open issues that may be experienced under the Windows XP operating system in the latest version of AMD Catalyst. These include:

The system may hand when playing Dirt 3 at maximum in-game settings.
Click to expand...
 
Ur round next said:
The system may hang when playing Dirt 3 at maximum in-game settings :(

I play a lot of dirt 3 on max settings think ill leave this driver then
Click to expand...
Yeah, it kinda stopped me getting them as I run 5760x1080 Maxed on Dirt 3 and never ever has it crashed and I don't intend it to start now!
 
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No you should be ok I reckon, there all close enough for me as long as I disable Windows Aero. I have it set up on a XL2420T now @ 120 fps. Wow seriously smooth, feels so crisp and barely the smallest bit of stuttering every now and then.

My I5 is at 4.6Ghz max temp 60 degrees when playing bf3 I never see it go above 80% usage so I doubt it's the CPU. It seems like it's a utilisation bug and the card/driver/game (don't know what's causing it) knows it's above 60fps so it just casually sits there, when it gets GPU heavy it goes up to 99% but I want high frames at 99% the whole time. Does anyone know why 2600k's with hyper threading don't have this problem?

I thought having the 120hz screen would force them to try ad render at 120fps but no joy.
 
The 7970 driver is not great for BF3. What does it perform like in Metro/Crysis or another demanding game? BF3 crossfire is a bitch for AMD and was with the 6-range until recently
 
I had the high res textures and dx11 tessellation patch in Crysis 2. Both gpu's were pegged at 99% but it locked up after 2-3 mins, haven't tried it since. The driver is ok but it's the gpu utilisation that needs to be sorted out, in some areas it gives me ~65 fps but both of them would only be at ~75%. :-( I'm amazed at how hyper threading fixes this for 2600k users.
 
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