4850 CF and Crysis

[wadec22]

Anyone getting 4850's in cf to scale with Crysis? I cannot get it to work for the life of me. Contemplating a new install without the patches. Someone said that worked with 3870's, although it seems counter-intuitive to me.

[Rattle]

its a crysis issue

[G.Foyle]

Crossfire worked perfectly fine with 2x 3870s for me. I can't get Crossfire to work with 4850s though, in almost every game I only get blank screen. Only game working was Call of Duty 2. I think I will try Catalysts 8.5 tomorrow, as that's what most reviews are using.

[Rattle]

i dont bother with crysis but using 8.5, 8.6 beta, 8.6 and 8.6 hotfix I have no issues in anything else.

[xMrBunglex]

make sure you're running the 8.6 hotfix driver and make sure your game's System.cfg file has a line that says "r_multigpu=1" without the quotes. it should scale very well.

[wadec22]

make sure you're running the 8.6 hotfix driver and make sure your game's System.cfg file has a line that says "r_multigpu=1" without the quotes. it should scale very well.

I tried adding this to the system.cfg, made no difference. I tried setting it at 0, 1 and 2. There were zero differences across the board. Weird. I know my xfire is working, it makes a huge difference in Vantage, COD4, and the CS Source benchmark.

I know a lot of people rag on Crysis, but I like it and I sure would like my xfire setup to work with it.

[cadaveca]

ARe you running 64-bit executable, or 32-bit?

[G.Foyle]

How are you using Cats 8.5 with 4850s? Do you have to mod the inf file? When I try to install them I only get AVIVO HD, C++ framework and Catalyst Regostration: no driver or CCC.

[Kai Robinson]

CF *DOES* work with Crysis....AnandTech managed to get it working.

[George_o/c]

AFAIK, just use Catalyst 8.6 + hotfix and you 'll be just fine

[wadec22]

I'm using 8.6/hotfix and 64bit executable. I did see Anandtech got it to work well. If you poke around, no other sites have it scaling correctly. I emailed anandtech asking about it, so far no word.

[G.Foyle]

I'm using 8.6 with hotfix and x64 executable, and it scales pretty well. Perfectly smooth on very high 1280x1024 under any conditions.

[Eniqmah]

No real improvement here @ 1680x1050.

[wadec22]

I'm using 8.6 with hotfix and x64 executable, and it scales pretty well. Perfectly smooth on very high 1280x1024 under any conditions.

would you mind running gpu bench with xfire enabled and without?

[G.Foyle]

Crossfire enabled:
================================================== ============
TimeDemo Play Started , (Total Frames: 2000, Recorded Time: 111.86s)
!TimeDemo Run 0 Finished.
Play Time: 103.08s, Average FPS: 19.40
Min FPS: 13.75 at frame 176, Max FPS: 24.89 at frame 1757
Average Tri/Sec: -15140803, Tri/Frame: -780328
Recorded/Played Tris ratio: -1.17

Crossfire disabled:
================================================== ============
TimeDemo Play Started , (Total Frames: 2000, Recorded Time: 111.86s)
!TimeDemo Run 0 Finished.
Play Time: 82.79s, Average FPS: 24.16
Min FPS: 19.43 at frame 1945, Max FPS: 29.40 at frame 862
Average Tri/Sec: -19952202, Tri/Frame: -825898
Recorded/Played Tris ratio: -1.11

This is weird at least, because I have perfectly smooth gameplay with Crossfire enabled, definitely much better than without Crossfire. Previously Very High was not very playable, and now it is. I think Anandtech was right about this benchmark and CF scaling.

[wadec22]

those benches seem low, of course you are on very high, maybe that is that big of a difference. didn't you say you were playing at 1280x1024?

With 1920x1200, high settings, very high shaders, I get 21-24fps. with crossfire enabled AND with it disabled. Anandtech did same bench and got like 38fps with enabled. I haven't found a single other site that could get it to work though.

[dennismagic]

those benches seem low, of course you are on very high, maybe that is that big of a difference. didn't you say you were playing at 1280x1024?

With 1920x1200, high settings, very high shaders, I get 21-24fps. with crossfire enabled AND with it disabled. Anandtech did same bench and got like 38fps with enabled. I haven't found a single other site that could get it to work though.

yes, i got 4850cf and it run very fast in crysis both in high or very high with crossfire enabled!

now, the full very high setting only run around 2x fps in 1920x1080 at default clock( CCC only overclock single core)!
i am looking the overclocking tool and hope it can run above 800 core under water cooling and sure it should get more than 3x fps !

[G.Foyle]

Anyway, I think HD4850s need a new driver pronto.

[wadec22]

Anyway, I think HD4850s need a new driver pronto.

QFT.

[ownage]

Anyway, I think HD4850s need a new driver pronto.

Yes, but Crysis should also be completely rewritten.

[xMrBunglex]

all you guys having problems have Crysis patched to 1.2 or higher? the game itself is a mess and i know the early patches solved some multi-GPU issues.

[G.Foyle]

Yes, I have 1.2 patch and all necessary Vista hotfixes.

[Kai Robinson]

Just the 1.2, or the 1.21?

[wadec22]

using 1.21 I've also tried ccc 8.5 and 8.6 both with and without the hotfix and cannot get it to scale with crysis. it's clearly a driver issue. the benchmark console clearly shows mgpu enabled when crossfire is enable, but there is zero difference in performance. getting old. i've been trying to get this to work since last friday. probably going to stick with my gtx 280 trade up. i love the idea of 4850 xfire, but i really want it to work with crysis. i realize there are lots of other games out there, but it's an example to me of multiple gpus never being as reliable as a single card solution. too bad.

[xMrBunglex]

Crysis is a four hour game that is full of glitches. why oh why is everyone so obsessed with it? when i played it, i thought i was at the halfway point and it just rolled credits. i couldn't believe it was really over after only a few hours.