Help! 4870 1GB CrossFireX Freezing.

[VigVoodoo]

The system will either freeze or shutdown after a few minutes of playing . It does not crash if I disable CFX. When it crashes you can hear the sound looping. Sometimes when it crashes the screen will lose signal and the pc will stay on. Other times it just shuts down completely.

Otherwise the computer is rock solid stable. It can fold for days at a time, and I constantly reach multi-week uptimes. It also runs benchmarks flawlessly.


My System:

AMD Phenom II X3 720 Black Edition - Processor ( 3.2GHz stock voltage, 25 °C Idle)
ECS BLACK Series A790GXM-AD3 - Motherboard
Thermaltake W0106RU 700 Watt - Power Supply
XFX Radeon HD 4870 1GB - Graphics Cards ( CFX 8x/8x, 70 °C Idle!, 94-114 °C before hard reset is needed)
Western Digital Caviar Black 640GB - Hard Drive
4x2GB G.SKILL Ripjaws Series DDR3 1333 CL8 - Memory ( 9-9-9-24)
Microsoft Windows 7 Professional 64-bit - Operating System

http://farm3.static.flickr.com/2775/4336257164_6ffd114731_o.jpg
http://i260.photobucket.com/albums/ii23/vigvoodoo/CrossFireX-HD4870-3DMark06.gif
http://i260.photobucket.com/albums/ii23/vigvoodoo/FarCry2Bench.gif

[nsegative]

Run rivatuner and post what your VRM temperature is like ingame.

[VigVoodoo]

Here is the GPU-Z log for last 20 seconds in game. Seems like the GPUs just shut off and the CPU is left running the game. At least, that's what it looked like. The game slowed to a crawl, I decided to exit out after about a minute of no speed up.
Log:

Date , GPU Core Clock [MHz] , GPU Memory Clock [MHz] , GPU Temperature [°C] , Fan Speed [%] , GPU Load [%] , Fan Speed [RPM] , GPU Temp.(DISPIO) [°C] , GPU Temp.(MEMIO) [°C] , GPU Temp.(SHADERCORE) [°C] ,
2010-02-06 23:44:30 , 750.0 , 900.0 , 76.0 , 80 , 99 , - , 70.5 , 76.0 , 72.5 ,

2010-02-06 23:44:31 , 750.0 , 900.0 , 75.0 , 80 , 55 , - , 70.5 , 76.5 , 72.5 ,

2010-02-06 23:44:32 , 750.0 , 900.0 , 75.0 , 80 , 65 , - , 70.5 , 76.0 , 72.5 ,

2010-02-06 23:44:33 , 750.0 , 900.0 , 76.0 , 80 , 67 , - , 70.5 , 76.5 , 72.0 ,

2010-02-06 23:44:34 , 750.0 , 900.0 , 74.0 , 80 , 76 , - , 70.5 , 75.5 , 72.0 ,

2010-02-06 23:44:35 , 750.0 , 900.0 , 76.0 , 80 , 73 , - , 70.5 , 75.5 , 72.0 ,

2010-02-06 23:44:37 , 750.0 , 900.0 , 74.0 , 80 , 0 , - , 68.5 , 73.5 , 70.0 ,

2010-02-06 23:44:38 , 750.0 , 900.0 , 76.0 , 80 , 90 , - , 69.5 , 76.0 , 71.5 ,

2010-02-06 23:44:39 , 750.0 , 900.0 , 75.0 , 80 , 85 , - , 70.5 , 75.0 , 71.5 ,

2010-02-06 23:44:40 , 750.0 , 900.0 , 74.0 , 80 , 0 , - , 67.0 , 74.5 , 68.5 ,

2010-02-06 23:44:41 , 750.0 , 900.0 , 73.0 , 80 , 0 , - , 68.0 , 73.0 , 69.0 ,

2010-02-06 23:44:42 , 750.0 , 900.0 , 72.0 , 80 , 0 , - , 67.0 , 73.0 , 68.0 ,

2010-02-06 23:44:43 , 750.0 , 900.0 , 72.0 , 80 , 0 , - , 67.0 , 72.0 , 68.0 ,

2010-02-06 23:44:44 , 750.0 , 900.0 , 72.0 , 80 , 0 , - , 66.0 , 71.0 , 66.5 ,

2010-02-06 23:44:45 , 750.0 , 900.0 , 72.0 , 80 , 0 , - , 67.0 , 71.5 , 67.5 ,

2010-02-06 23:44:46 , 750.0 , 900.0 , 71.0 , 80 , 0 , - , 66.0 , 72.0 , 66.5 ,

2010-02-06 23:44:47 , 750.0 , 900.0 , 72.0 , 80 , 0 , - , 65.5 , 72.0 , 66.5 ,

2010-02-06 23:44:48 , 750.0 , 900.0 , 71.0 , 80 , 0 , - , 65.5 , 70.5 , 66.5 ,

2010-02-06 23:44:49 , 750.0 , 900.0 , 70.0 , 80 , 0 , - , 66.0 , 70.5 , 66.0 ,

2010-02-06 23:44:50 , 750.0 , 900.0 , 70.0 , 80 , 0 , - , 65.5 , 70.0 , 65.5 ,

[VigVoodoo]

Well looking at most recent log, the one I posted, the temps appear safe. Hottest card idles at 58 °C and reaches 76 °C under load.

I have tried using 1 and 2 CFX bridges, switching cards around, unplugging anything unnecessary, Aux Video Power ATX4P plugged in and not plugged in, drivers on CD and newest drivers, ending any unnecessary processes, cpu at stock speed and overclocked, 2x1GB DDR3, 2x1GB+2x2GB DDR3, 2x2GB DDR3, and 4x2GB DDR3.

[VigVoodoo]

Here's a log of my computer during the big problem I'm having:

http://farm5.static.flickr.com/4071/4337918764_fc0a7dd4ef_o.gif

[Razrback16]

I don't see your VRM temps in there -- can you post those up during load? You can get them with GPU-Z. If they are getting anywhere into the 115-125*C range that could be causing the crashes. I ran into that with my 4890s before realizing my waterblocks just didn't cool the VRMs well enough to go crazy voltage. :)

[Razrback16]

Oh and by the way -- use both Crossfire connectors.

[jaredpace]

Increase the fan speed on that gpu thats at 93C

[PaganII]

Geeez! mine hardly go above 50C under load. Turn the fans up to at least 40% (both cards) there is a drop down menu in CCC to adjust clocks and fan speed for each card. You have to do both.