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[hexus] AMD CrossFireX preview - quad-GPU scaling to new heights

post #1 of 26
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Quote:
Summary
We've seen first-hand that CrossFireX, in its three- and four-GPU incarnation, works well enough in DX9 titles run at ultra-high resolutions and image-quality settings.

A single-GPU Radeon HD 3870 is no slouch but performance can be up to 3x better with dual Radeon HD 3870 X2s. That will only really matter if you're playing fast-paced games and want all the eye candy turned on to maximum, however.

Scaling, though, is comparatively limited with the DX10 API and Crysis - which is the most talked-about game of 2007 - gains are virtually non-existent at high resolutions.

Given what we've seen thus far, the optimum combination, assuming the underlying hardware is in place, appears to be a three-GPU graphics sub-system run at 1,920x1,200 and above. NVIDIA, we note, already has three-way SLI for its GeForce 8800 GTX and Ultra SKUs.

It's difficult to give firm buying advice with such a nascent technology. What we can say for now is that CrossFireX opens up new, flexible avenues for potential upgrades in the HD 3800-series family.

However, we reckon that the majority of popular gaming titles will need to scale to 3x before four-GPU operation becomes compelling enough to invest in.

Further analysis will be presented as we review the CrossFireX driver before its launch with the CATALYST 8.3 drivers.


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post #2 of 26
Crysis is the destroyer of all that is good in this world, curse you Crytek.
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post #3 of 26
Those are some impressive results. Seems to do better at higher resolutions with more AA/AF - except in Crysis's case.
     
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post #4 of 26
Quote:
Originally Posted by grunion View Post
Crysis is the destroyer of all that is good in this world, curse you Crytek.
haha, so true...
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post #5 of 26
Goddammit, will nothing in this world pwn Crysis?!
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post #6 of 26
COD4 @ 2560x1600 4xAA and 16xAF at 86fps is crazy at that resolution.
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post #7 of 26
***... look at the those single card FPS on crysis.... 10? WTH? I've personally run it on one and got double that.
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post #8 of 26
Quote:
Originally Posted by Ihatethedukes View Post
***... look at the those single card FPS on crysis.... 10? WTH? I've personally run it on one and got double that.
That's kinda what I was thinking......
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post #9 of 26
Quote:
Originally Posted by jinja_ninja View Post
Goddammit, will nothing in this world pwn Crysis?!
Quote:
Originally Posted by Ihatethedukes View Post
***... look at the those single card FPS on crysis.... 10? WTH? I've personally run it on one and got double that.
They ran it in DX10, thats why.
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post #10 of 26
I ran it in DX10 too...
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