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2 bridges or 1???? - Page 2

post #11 of 15
Only 1 bridge is required between 2 cards upto 16something x 25something resolutions, However, no harm in sticking both on

update from Ati.
Quote:
CrossFire Requirements
The requirements of a CrossFire system are:
• A CrossFire-ready motherboard.
• Two CrossFire-ready graphics cards.
• CrossFire connections for card-to-card communications (come with your
cards)
In addition, a 550 watt or better power supply is recommended.
For an up-to-date listing of CrossFire certified motherboards and power supplies,
and CrossFire configurations, see ati.amd.com/products/certification
Note: A second CrossFire interconnect cable is required to support 3D
resolutions above 2560 × 1600 at 60 Hz for LCD monitors and 2048 × 1536 at
66 Hz for CRT monitors.

Edited by Antho - 6/3/08 at 9:06am
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arrrrgh
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post #12 of 15
Like the poster above said, if you're running low resolutions, you don't absolutely need it.

I tried benchmarking and testing with 1 CF bridge, and then 2, and noticed no difference (at 1280x1024 and 1650x1050) ...

But, like others said, looks cooler with the two connectors plugged in
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post #13 of 15
Quote:
Originally Posted by BenBrown View Post
Only one bridge is needed when running two cards as thunder_2008 stated. Also there has actually been a benchmark run (cannot remember the site currently, but google is your friend) that tried to test if there was a difference between the two and when two bridges were used the results were slightly lower than if just one bridge was used. If I happen to find the site that did this I will post it.
Hi Ben...I was looking at the nerdherd site...seems very interesting...+rep for the link.
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post #14 of 15
Quote:
Originally Posted by thunder_2008 View Post
Hi Ben...I was looking at the nerdherd site...seems very interesting...+rep for the link.
Thanks for the rep, however I must be honest when I say I am not sure which site you mean. I started the whole Nerdherd thing with a group of guys from church that played CS. Not really associated with any site.....glad it pointed you to an interesting site though
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post #15 of 15
I did read a benchmark somewhere.
Telling that 2 bridges aren't needed when your board does have 2 full PCIEx 16x Ports.
With 16x+4x or 8x+8x you should use 2 bridges.
Sry for no Source - didn't bookmark it...
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