So, i flashed the ATI.X800PRO.256.Samsung20_040719.bin bios to my x800se card altered to 425.25/ 398.99 clocks. After some thought's on risking my x800se, i hit the button:
ATIFLASH.EXE -newbios -f -p 0 ati800pm.rom
After rebooting, w2k rededected my x800se as x800xt.
ATI Tool dont showed me some more pipes, but 3dmar03 gives me about 7010 point with 425.25 /400.
So at the moment i think that there is no succes, but ok the card still do oc to 500/450 and gives me in that config 7800points in 3dmark03.
As i am running it with the stock cooler, and temp is going beyond the line with 83°C, i think i will not use this core overclock, until better cooling is there.
Interesting ist, that rabit states some interesting things:
Active pipelines: 8, GB_TILE_CONFIG = 0x00010017
MPP_TB_CONFIG = 0x01FF0000
This has not altered by the flash, so i think that there is an other thing wich will determin the amount of pipes.
And as far as i know, the new BIOS file was only around 55kb, whereas the used flash chip is staed as 64kb size.
So i think the pipe information are stored in that space.
But ok, the only card wich changed Pipes was vulkans, and this has not that good ending.
So at the moment i don't know if i stay with the new bios or revert back to the x800se one.
But i think at least it would be a good information, if i can do that, without frying the x800se card.
Then i would feel more pleasant during messing around with x800 Bioses.
Next step is to dismount the hs, and check if there are any lasercut in my chip.