AMD R9 270 Crossfire setting up

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chrisbard

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Feb 16, 2010
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Hello guys and gals,

I've been away from the IT world for a couple of years. Last December I decided to get back and I built myself a desktop PC. The components are:

AMD FX-6300 @ 4.3Ghz (Arctic Cooling Freezer A30 - 120mm)
Gigabyte 990FXA-UD3
Gskill 1866 2 x 4096 MB
Corsair Force LS 120 GB
2 x CLUB3D Radeon R9 270 Royalqueen 955GHZ 2GB 5.6GHZ
Zalman Z9 Plus case 4 x 120mm fans
Thermaltake 750W PSU

Long story short I ordered the second graphic card last week and I got it yesterday. I replaced the 500W TTK PSU with a 750W today. The system is running great and I've run a couple of benchmarks with no problems. Since I know nothing about crossfire (or SLI for that matter) I want to ask you guys if you can figure out why the info regarding the cards is messed up and what software I should use to keep these "dogs" on a leash.

Here are some screenshots to give you an idea.

This is the first card http://imgur.com/o5uvDvj

This is the second card http://imgur.com/Y3NjJXe

Thank you!

Chris

 
Solution
clutchc
No other app comes to mind right now. I just use GPU-Z for info and keep it running in my 2nd display when needed.

I used to have both CF and SLI rigs, and they performed great. I'm always doubtful when I hear folks talk down dual cards. I've had nothing but success with CF/SLI. But neither one will perform well if the cards are too low-end. It takes a mid range or better card to work well in CF/SLI. AMD had some issues in the past with severe micro-stutter until they developed their Frame Pacing technology which used to be offered only in the beta drivers. But I think the latest official driver has it now too.
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clutchc

clutchc

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If you are not in a game or some other gpu intensive activity at the time you check gpu-z, one card will always be at idle. The 2nd card won't become active until it sees a CF aware app/game. Hence, the specs will read less than the active card. I presume:
1) both cards are identical and
2) they are in the 1st two PCIe x16 slots (not the 3rd PCIe x16 slot that is only x4 lanes)?

If you have a 2nd monitor that you can monitor gpu-z in, run Furmark and leave 2 instances of gpu-z running (one for each card) in the other display. See if they equal out. But you have to run Furmark in full screen for CF to be active.
 
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chrisbard

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Feb 16, 2010
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Thanks for bringing some light into the matter clutch. As for your questions the answer is yes to both. Now, I don't have a second screen to be honest. Is there another app beside the native AMD which helps control the cards and provides some level of information?

On a positive note I play a bit of BF4 and now with crossfire on I have between 50 -110 FPS with an average of 80. I love crossfire so far!
 
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clutchc

clutchc

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Apr 22, 2009
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No other app comes to mind right now. I just use GPU-Z for info and keep it running in my 2nd display when needed.

I used to have both CF and SLI rigs, and they performed great. I'm always doubtful when I hear folks talk down dual cards. I've had nothing but success with CF/SLI. But neither one will perform well if the cards are too low-end. It takes a mid range or better card to work well in CF/SLI. AMD had some issues in the past with severe micro-stutter until they developed their Frame Pacing technology which used to be offered only in the beta drivers. But I think the latest official driver has it now too.
 
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