x1950 Crossfire Problem

[kDull]

Hey I was wondering I have Two x1950 with crossfire enabled.
Dual core intel 5.6 ghz
2 gigs kingston ram.
so on so fourth.
I sometimes when I play games my screen randomly goes black
and then sometimes it comes back and the games still going sometimes its not.
It says my Display driver keeps crashing, my video temps are normal
It happens alot and so randomly too
I have the Catalista thing on standard not advanced I also run vista.
and also my FPS in like CSS and stuff drops to like 30-200ish.
and like its REALLLY random, other people say they stay constant 90 or w/e.
And my cards are newer and better but yet they are sooo random.
Always going from like 130 but usualy like it stay from 30-60....which is pretty shitty. I figured it'd be high with two damn new cards is something wrong?
But when I have crossfire enabled or disabled it doens't make a difference
I always get the same FPS and I figured since two cards I should be getting more?
Thats about it really.

[Apoptosis]

what are your full system specifications? What driver version and so on is really needed...

It sounds like you are running vista with the Catalyst drivers? Be sure to list what version of Vista and so on!

[kDull]

Yeah I have the new vista cata drives too though
Dual x1950 pro
Ati catalyst CC Version 2007.0322.2238.38535
.NET Runtime - Version 2.0.50727.312
Radeon X1950 Pro [Display adapter] (2x)
Radeon X1950 Pro Secondary [Display adapter] (2x)
Generic PnP Monitor (19.1"vis, s/n FUAU71162352C, January 2007)
Windows Vista Home Premium (build 6000)
Board: MICRO-STAR INTERNATIONAL CO.,LTD MS-7238 110
Bus Clock: 200 megahertz
BIOS: American Megatrends Inc. V1.3 01/05/2007
2048 Megabytes Installed Memory

Also in some games the ground and some texture don't render
they just show up see through unless i play games in windowed mode...
In FS they don't work, In CSS and Steam games

as well with that the error i get says
"atikmdag" stoped responding

I also got 4713 3dmark points.
When other tests i've seen get 10000 plus with my same video cards
and a worse CPU....and I've defragged and virus scanned everything.

[Beehler]

Hello everyone,

I recently assembled my own computer from scratch and I bought 2 ATI Radeon x1950 Pro graphics cards. I hooked them both up power plugs and crossfire cables, everything. Installed the software and did an update. I went to device manager and it shows both graphics cards. I also went to catalyst and clicked the crossfire enable button. I did a performance test with and without the 2nd card and recieved the same results. In short it seems crossfire isn't working.

Specs:
Motherboard: Asus P5K Deluxe
CPU: Intel Core 2 Duo Processor E6600 2.4GHz
Graphics cards: ATI Radeon X1950 Pro
Hard Drive: Seagate / 250GB / 7200 / 8MB / ATA-100 / OEM /
CD-ROM: Sony DRU170C Retail DVD Burner
RAM: 2 x 1GB 800MHz DDR2 Corsair

I did a FULL performance test with and without 2 graphics cards and recieved around 931.7. No improvement from crossfire....
http://www.passmark.com/products/pt.htm

[Toebot]

What's the 12v amperage on your power supply? I had flaky performance on a crossfire setup with a 500W PS. The wattage looked good but the 12v rail was too low. Switched to a 600W with 38A 12v and the system was more stable, it still isn't what I would call rock solid though.

[Beehler]

I use a 700Watt power supply. I don't know what volts or anything. Just says 700 watts. =/

I mean I can toggle crossfire on and off but it seems that the cards arn't working together.

[boozeedoo]

Hi did you have any joy sorting this out?

I'm having exactly the same issues with an x1900xt 512mb set up?

[IRQ Conflict]

Use d3Mark series to bench CF performance. Especially 06. My score went from ~5000 single x1950Pro to 8688 with two of them.

Make sure Catalyst A.I. is not set to advanced, keep it at it's default settings.