Radeon 8500 causing A7N8X mobo to crash 1

[smilingtoby]

I've just upgraded to an
asus A7N8X,
512 mb of ddr PC3200
Athlon XP 2000 Thouraghbread
400 WATT dual fan Psu
Radeon 8500 Graphics card.

All the latest drivers for mobo grahics are installed.

When ever i run 3dmark 2001se my computer will turn off after about 20 seconds. It will only turn back on if you turn off the mains power for a minute. It then reboots fine. Also the temp reading is different in the bios to the asus temp.software provided on the mobo cd.

Acording to mother board moniter prog. the cpu is running at 50 degrees and the mobo about 25.

I've tried altering the memory settings, running dx9, trying 3d 2003, complete OS reinstall, latest bios but still it crashes.

It could be the built in COP facilty to stop the cpu overheating but it has cooler and heatsink rated to an athlon 2200 on it.

however when i run my old geforce mmx 400 card the system is rock steady and runs 3d 2001se better than it ever has and never crashes. Put the radeon 8500 back in and 'crash'

Also crashes when running games, in fact anything that is graphics intensive. Any help would be really appreciated as I've run out of ideas!

Cheers Toby

 

[paparazi]

Have you got CPU overheat shutdown activated in the bios?
What temp have you set it at?
Have you monitored you max temps? not just idle?
A common misconception is that an XP2.2+ runs hotter than a 2gig not true, you almost definately have a Palomino core and the 2.2+ is a Thoroughbred (alterations in the manufacturing process, die size, mean thoroughbreds run cooler than Palomino's of similar clock speeds)ie: Palomino XP2.1+ produces more heat than the XP2.7+ with thoroughbred "B" core.
Same goes for the older Athlon 1.4's, these produced similar heat values to the current top XP's (2.7-2.8+)
Basically what I am saying is the XP2.0+ is a hot CPU so make sure it has a more than adequate heatsink/fan and at least two extra case fans fitted for good air turnover and lowest possible internal temperatures.
Martin Replying helps further our knowledge, without comment leaves us wondering.

 

[smilingtoby]

Thanks Martin. I will change the cooler to one with a better heatsink, perhaps copper instead of aluminum. Although there are already plenty of fans in the computer.

I've looked through the bios and not found the cpu overheat shutdown or anywhere to effect it's temperature! It is probably there so I will look harder.

Cheers Toby