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3870x2 + 3870 question

post #1 of 13
Thread Starter 
Ok, so here is my question i have 2 3870's in my x38 motherboard and im thinking about droping a 3870 and adding a 3870x2. I looked around and could not find much info about people doing this, will i notice a difference?
any input would be appreciated.
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post #2 of 13
What resolution are you running? Yes it does help. I think it'll add on average 3-4k onto your 3dmark score. Not positive, but it will give you more fps for sure.
post #3 of 13
Thread Starter 
well on my lcd screen i only use 1440x900, i get about 17000 3d06 marks without overclocking my 2 cards, the only reason i'm asking is the prices have dropped quite a bit and i have a friend who wants to buy one of my 3870s. I cant decide if i should wait for a 4870 or get the 3870x2.
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post #4 of 13
Yea, so I don't mean to hijack a thread but since I am having the same question right now.

Anybody out there that runs tri-Xfire??

Thinking about pickinig up a Visiontek since they are on sale for 130 bucks.

Any body regret it or say go all for it or anything. Any problems matching up different manufacturers?


Is there a very big performance hit with the difference in GDDR memory type and speed? Any problems or issues with running different core speeds with the cards?
Edited by rx7racer - 6/3/08 at 1:05pm
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post #5 of 13
IMO trifire is the sweet spot I was running it for a while and its nearly as good as quad fire
    
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post #6 of 13
Well I accidently bought an X2 on ebay yesterday, so I'll have a tri'fire setup on thursday evening. I'll run a few crossfire/tri'fire benches & post'em up.
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post #7 of 13
I hope they run good for you. Did you get the same manufacturer out of curiousity?


Anybody else, about to walk out the door and grab a 3870 so I'm very intrigued about how sweet the sweet spot is.
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post #8 of 13
its acually filled with honey giving it a natural yet very insightful sweetness.


A simple "Hd 3870x2 crossfire with Hd 3870" google and some guy in another forum says 3dmark, cod4, bioshock etc. is 3x better in tri-CrossfireX while crysis is 3x worser. No surpises.

i would wait out for the 4870, performance might not be that much better than 3870x2 but power comsumption/heat will be improved.
post #9 of 13
Quote:
Originally Posted by darksideleader View Post
its acually filled with honey giving it a natural yet very insightful sweetness.


A simple "Hd 3870x2 crossfire with Hd 3870" google and some guy in another forum says 3dmark, cod4, bioshock etc. is 3x better in tri-CrossfireX while crysis is 3x worser. No surpises.

i would wait out for the 4870, performance might not be that much better than 3870x2 but power comsumption/heat will be improved.
Well go google it for me because I'm apparently too stupid

Even putting in exactly what you said I get a bunch of 3870X2 info and nothing useful as in a 3870X2 + 3870 in crossfire.
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post #10 of 13
Well to answer you question regarding performance:

Here's some 3DMark Vantage scores. Forgot to run some standard crossfire benches beforehand, but you'll get the picture:

HD3870's CF @ 810/stock memory


HD3870X2


And Tri-fire
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