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Question about tri-fire

post #1 of 10
Thread Starter 
ok so I got a 4870X2 today and installed it in my system, enabling crossfire. Open gpu-z and find that it says disable in two, is that normal or should it say enable? I'm new two tri-fire.

EDIT: Also should I but the single 4870 at the same speed as the 4870X2?
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post #2 of 10
The primary card will say Crossfire enabled, in your case 3 GPU's and the other cards will say disabled.

Ninja edit: It wouldn't hurt to set the clock speeds to all match up.
    
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post #3 of 10
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Quote:
Originally Posted by Kratthew D. Kraids View Post
The primary card will say Crossfire enabled, in your case 3 GPU's and the other cards will say disabled.
Thanks, should I down clock the single 4870 to the 4870X2 speed?
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post #4 of 10
nah, I'd say try matching it to the 4870x2
    
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post #5 of 10
not to derail but respect for that eye candy tri-fire bro, also I have the same wallpaper so gg
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post #6 of 10
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Quote:
Originally Posted by Kratthew D. Kraids View Post
nah, I'd say try matching it to the 4870x2
The single 4870 is 815/925 and the 4870X20 is 750/900 well I ran some 3dmark06 and not to sure about the number. I got more with the 4870X2 then the tri-fire, ok the single 4870 is 512MB does that make much of a difference vs is I had the 1GB version?

Should I just stick the the single 4870X2 is the 4870 512MB is slowing me down?

first picture is the 4870X2 and the second is tri-fire.

I also notice in MSI Afterburner that the clocks are wrong should be all 750/900 and it shows up as (3rd picture)

GPU1 500 core
GPU2 507 core
GPU3 507 core
GPU1 900 Mem
GPU2 500 Mem
GPU3 500 Mem

is there a reason its showing up that way?


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post #7 of 10
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bump
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post #8 of 10
Get that 4870 outta there. You're gimping the system because cfx/tfx is only as good as the weakest card, which means you're available ram has now shrunken to 512mb.
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post #9 of 10
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Quote:
Originally Posted by tsm106 View Post
Get that 4870 outta there. You're gimping the system because cfx/tfx is only as good as the weakest card, which means you're available ram has now shrunken to 512mb.
ok thanks for the info but I have one more question before I pull the 4870 out. Before I got the 4870X2, I was running crossfire with two 4870 before one died and scored higher then with the single 4870X2 was wondering if that normal. I got the 4870X2 to replace the dead 4870.

Crossfire 4870 I got 17184
Single 4870X2 I got 15898

so I was better off with two 4870 rather the a single 4870X2?

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post #10 of 10
A 4870x2 will count where it matters more, in games. I wouldn't throw a single 4870 back in there because 3D mark says so. If you still really want to tri-fire get a 1GB model 4870 and overclock it. Otherwise like previously stated the 512MB card is going to hold you back.
    
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