Gigabyte windforce 7950 crossfire performance issues

Hi, I am so far not impressed with the performance of my new 7950's in crossfire. They are the Gigabyte windforce ones with 3 gb of gddr5 ram each, they also come stock overclocked to 900mhz core and 1375mhz memory. Running the benchmark in just cause 2 (the dark tower one) I am only averaging around 39 fps. This is with all settings maxed out with v sync off. I can also tell the fps are not up to par in normal gameplay. Here are a couple reviews of the cards in crossfire (albeit they are different brands):

http://www.tweaktown.com/articles/4566/sapphire_radeon_hd_7950_3gb_video_cards_in_crossfire_overclocked/index9.html

http://www.legitreviews.com/article/1853/7/

There are many others and all of them have much better frame-rates. One of them is using the exact same benchmark. I don't think anything in my system is a bottleneck as you can see:

Motherboard: Asrock z68 professional Fatality

CPU: i5 2500k @ 4.5 ghz

Memory: 16 gb cosair vengeance low profile (to fit under the noctua cooler for the cpu)

PSU: corsair HX 1050

GPU: 2x gigabyte windforce 7950's

Storage: 2x corsair force 3 120 gb's in raid for OS and apps, 1.5 tb seagate green for other storage

cpu cooler: Noctua nh-d14

OS: windows 7 64 bit


So is there anything I am missing here like a bios setting or a catalyst setting? I know the crossfire is working because of the crossfire icon at the top of the screen during game play.

The cards do make a barely audible humming noise (not the fans) while in crossfire mode, so I don't know if that is normal. Thanks for the help!

PS I did make sure the drivers are up to date and the catalyst settings are set to application controlled.


Don't...
Bump posts
http://www.tomshardware.com/forum/283384-33-read-first
1 answer Last reply
More about gigabyte windforce 7950 crossfire performance issues
  1. they also come stock overclocked to 900mhz core and 1375mhz memory

    That one should be stock overclock to 1000mhz core
Ask a new question

Read More

Graphics Cards Performance Crossfire Gigabyte Graphics