Dothan @ CT-479 - howto and fixes.

[sky]

I dont have my Dothan sys but you can try this and see if it works. You need to disable Fastwrites in bios and in windows on GPU using RivaTuner. Actualy try first RivaTuner disable GPU Fastwrites then OS Fastwrites. It would decrease performance a bit but not much and should make oc'd system more stable. Would be intresting to know what gives more peformance -no PAT with FW or Pat on and no FW.
Hope it works

thanks, i'll try that when i get back home today.. will see what it does.
only thing i can say is that withou pat (pat being completely off) performance
is noticeable down from pat fully enabled or even partially enabled. partially
enabled happens at fsb > 200. cpu-z says it's enabled, well that's kinda true,
but using ctiaw you'll see it is only partially enabled. unless you can up the
ram to run at ddr500 on booting, you're not going to see pat again with these
high fsbs... when pat is off, i have to up the fsb quite some to get close to
what i got with it turned on. i even put a former cpu-heatsink on the nb...
no deal. if anything it worsened the oc (at least that's how it seems).

anyway.. what struck me as odd was the difference between the last gen
ati card (9800xt) and the well (now) last gen nvidia (6800gt). sure the nv
is faster overall, but what's that got to do with the nb and all? i mean, almost
40mhz of fsb-power lost only by using a different videocard - that seems
rather odd. where's the connection? i mean from the performance feedback,
3d2k1 offers, the 9800xt (when overclocked) wasn't that far off compared
to the gt, except of course in nature or dx9 stuff...

Check out this post: http://www.abxzone.com/forums/showp...8&postcount=320
I have a p4p800 pat hacked and it stops artifacting once I change performance mode to 01. Give it a try. Too bad it can't be changed permanently.

I hope I can upgrade to a dothan once I save up some money.

thanks! another thing i will try. i can't view the pic you linked to w/o regging
there, but i guess i know what you want me to try. so far i've been running
the tweaker to change the 2 settings below the "normal" timings. i don't
know what that setting is at right now, but i'm pretty confident it is at 00
right now. we'll see if it helps the situation. because what's the use of high
fsbs when you can't really use it (in 3d that is).




anyway.. another thing i found odd with my dothan combo was that when
i am running win2k, i can put out real good 1m and 2m superpi runs. but once
i try 32m, my times go to hell. the same config that can run a low 26 will take
a good 48m (!!) for 32m. that's win2k sp1. with the same setup and almost
identical settings (main stuff is there, memory timings, yadayada) on a winxp
pro sp1 install (former amd xpm install, blatantly misused with shot direct x9
install and all) i am able to pull low 29m for 32m. that is still not great, but
one hell of a difference. anyone know what could be the cause?
the win2k install was brandspanking new by the way... got the same slowish
result with the win2k install of the old xp-m...