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Crysis 2 DX11/HighResTextures and 3-way CFX problem

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Jun 9, 2011
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South Korea
Hi. I just patched my Crysis 2 to v1.9 and got obtained DX11 / Ultra spec and High resolution textures. I tested newly-added options and compare them with late-highest setting, Extreme option. Here's the result.

My system is as follow:

CPU: Phenom II X6 @ 4.2GHz / NB 2.8GHz
Mainboard: MSI 890FXA-GD70
Memory: Samsung PC3-10600 4GB x 2 @ 1600MHz / CL7
VGA: Radeon HD 6970 2GB x 3 CFX
Storage: Intel SSD 510 Series 120GB
Power: CORSAIR AX1200 GOLD


First, I tested each graphic option under 3-way CFX configuration.

f53c275bb3f9c1ec2c44fd5213ec6b36.png


As you see, without any API or textures resolution change, changing spec from Extreme to Ultra brings about 14% performance loss.
Changing API from DX9 to DX11 cuts average framerate massively about -56%. DX11 in Crysis 2 seems that it's really hardware demanding.
Contrary to previous two tests and popular expectation, applying high resolution textures merely affects to performance - see and compare 'Ultra' and 'Ultra + HighRes', 'Ultra + DX11' and 'Ultra + DX11 + HighRes'.


Second is to test under various VGA configuration - single, 2-way and 3-way CFX.

a94464f5023506e4418e318d00cbb581.png


There's something we missed at the first test: That is, CFX scale may decrease (or increase) by presence of newly-added options since there can be no suitable profiles for them in up-to current version of Catalyst.
It seems okay when we use single 6970 and even add another 6970. CFX scale for 2-way configuration is nearly 200% under both Extreme (DX9) and Ultra (DX11 + HighRes) settings. But adding a third 6970 is, though it shows nice 3-way CFX scale under late DX9 setting, almost meaningless for brand-new DX11 setting.
So, '-56% loss' at the first test is not made only by Extreme -> Ultra, DX9 -> DX11 change but also 'nullified' third VGA. We may expect that this massive DX11 performance loss under 3-way CFX can be moderated by future version of Catalyst or CAP (Catalyst 11.7 or 11.6 CAP2 perhaps).


So far, my points can be summarized as follows:

1. Changing from Extreme -> Ultra consumes framerate by around 14%
2. Under DX11 settings, as of today, third Radeon VGA worth nothing. (wait for coming Catalyst)


Thanks for reading :)
 
I m gonna upgrade soon lol the performance hit isnt that bad though :P but still i hope its playable for me :L
 
Hope my cf 6950's wil be able to play it at 1920x1080(I like to play FPS on my tv)
 
Hope my cf 6950's wil be able to play it at 1920x1080(I like to play FPS on my tv)

I'm playing Crysis 2 w/ high texture pack on and dx11 on w/ everything on ultra @ 1920x1080 w/ 2x 6870s and have yet to see it dip below 40 fps. Usually hovering around 60's.

So your 2x 6950s will just smoke it.
 
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