Connect 3d X850 xt

Bioses are not usually manufacturer specific. Look for a bios that has matching memory brand and speed. Also use caution when flashing PCI-E cards, you must have the newest version of flashrom. Your best bet is to get ATItool and set it to overclock at startup, or when a game is launched. ATItool has the unique ability to detect artifacts, even invisible artifacts can eventually burn electron paths into the dielectric of the GPU and MEM and make an expensive paperweight.
The only difference between X850XT and XTPE is the clock frequencies. They are both 16pipe cards. Stick away from flashing the bios, if at all possible, also, your warranty is void when you flash a bios from a different mfg. Sometimes parts of a different bios can get stuck in the EEPROM, and lead to an unusable, unreturnable graphics card. Very rare but it can happen.
Also ATI rates their GPUs to a peak temp of 100C, but for overclocking, it should never go over 70C. Temps over 60C accelerate the degradation of any silicon device. The lower the better. If you replace the cooler, keep the origional one in case you need to use the warranty.

5% thats just plain dangerous!!!
use the Fan overide in the tool to either A set it to maintain a temperature(say 55) os set it dynamically to say
0- 70%
40-80%
45-85%
and so on until its running at 100% at least at 55 and over. you will burn out that card quickly running those temps and X850s have exhaust to outside the case so any increased airflow is a plus anyway(bearing the volume I know my X800XTs stock cooling was a Turbine)

yep first thing I did with mine when it was on stock cooling was redo it in AS5. As for better cooling I would go for the Arctic Silencer it is pretty much the same in the design(exaust) it also covers the RAM and is VERY quiet and lowered my temps considerably. I got mid 60s under load with stock get mid 50s with the Silencer

i guess that some things arent so good as it could be
why should the manufactors give you really good coolers so they give you quiet but warm coolers

for a x850 70 degree are okay

My X800Pro (flashed to 16 pipes and 500/500XT speeds) was running up to 85degC under full load with stock cooler. With a Silencer 4 it runs at around 62degC max load, and is quieter than the stock cooler at all speeds. If you are going to OC I would recommend upgrading the cooler.

Hi Poo

I get 11900 odd with an X800Pro flashed to XT specs (so 16 pipelines and 500/500) so I guess it depends on the rest of your rig - what are the specs of that? I would expect a little more but not much - pretty good!

yeah I think somethins slowing you down somewhere I beat it just slightly with mine at PE speeds check link in my sig even downclocked my 2nd best score is still better

hmm maybe theres not a huge performance gaps between 800s and 850s tho my P4 is still beating yours a bit as well(mines mildly OC to 215 FSB I have PAT on my Mobo if I push it any further I will lose it) but seems odd a P4E OC 200mhz would beat a AMD 64 Im also using ABit for Mobo and identical RAM at bone stock I still can get 12356.
Bios up to date on the MoBo,chipset drivers etc?

Yeah, I have had 12600 with mild OC on both system and card so thats about right