Oblivion Crashes with new Videocard?

[madpacket]

Hello all, I have just upgraded my 7800GT to a Powercolor X1900XTX Radeon.
Before the upgrade I could play Oblivion all day without crashing, now within 5-20 minutes oblivion crashes to desktop asking if I want to send this error to microsoft etc :(

I tried the beta 6.3 drivers and now the official 6.4 Cats + CCC. I tried with my cpu speed at default (1800mhz) and overclocked, makes no difference as it crashes the same amount.

I just installed the new card last night but so far everything works except oblivion. Quake 4, 3DMark, WOW all worked okay.

One thing I have noticed is how hot the videocard runs which I knew before purchasing the card may be an issue. Airflow in my case is excellent and heat shouldnt be an issue but my x1900xtx idles around 75-80 Celcius, then under load hits as high as 97 degrees. Is this normal?

I have listed my system specs below, if anyone else has had similar problems (Geforce works fine, Radeon crashes) please let me know.

Thanks!

System #1:

Asus A8N32-SLI
Antec P180 / Seasonic SI-12 600W P/S
Opteron 144 @ 2.7ghz w/ Thermaltake Big Typhoon
Powercolor X1900XTX (Stock Fan)
2X WD36 Raptor HDD (Raid 0)
2X1024 XP4000 Mushkin Ram @ 245mhz
LG DVD +- RW
Creative XFI Xtreme Music
Gateway 21" Widescreen LCD

[dnottis]

Thats way too hot. Even when mine had the stock cooler I saw 40 - 45 idle and 80 - 85 load. If you are hitting 97 load and 70-80 idle there is a problem. Thats way too hot.

You might wanna remove the stock cooler and remount it, make sure there is good contact with it.