9800pro to xt problem

[xman01]

i flashed the card with the club3d 9800xt 128 hynix and worked like a charm but the mem timings are very tight

on stock bios i was able to do 440/380
xt bios i can do 440/365

with the current bios editors i can't see the difference in timings, they look the same to me

any ideas besides increasing the vmem

[d]g[ts]

I would try to edit the device ID of the cards original bios to that of an XT to see if you still maintain your memorys overclock.
if that doesnt work, try to open both bioses side by side to find the minute difference. as with the last few bioses i played with only had 3 values different for memory than the original, so they were EZ to miss.

[xman01]

modding the original bios device id was me next option
but i was doing a search and couldn't find anything specific about whethere changing it allows use of the ""9800xt optimized shaders"

from my end it looks like 9800xt has tight arse mem timings to give the ~250 +marks in 3dmark03

i noticed the difference with the BBA 9800xt 256 vs the club3d 9800xt128
the messed up part about it is when i try to put relaxd timings i get errors

[d]g[ts]

From my own testing the optimized shaders actualy come from the drivers. When the drivers install they look at the device ID and from there tell the OS which path the drivers are to install ( and which optimizations each core uses) Now i did 3 tests with an XT bios , a pro bios, and an XT bios W/a pro's device ID. And if ya look at them ya see that the only one scoring higher is the one that appears as an XT. and even tho the card had an XT bios with a Pro's ID it scored the same as a Pro.
http://service.futuremark.com/compare?2k3=3834595 XT bios
http://service.futuremark.com/compare?2k3=3819096 XT bios w/pro ID
http://service.futuremark.com/compare?2k3=3821804 Pro bios

I must note that all i did was take a normal XT bios, and edit the amount of card memory with rabbit to 128Meg for the XT bios. and thats why the card lists as 128, instead of 256

[xman01]

thanks for the info
cause if you didn't suggest that i'd have spent atleast another day tryin to make that xt bios work

right now i'm using the stock bios modded to xt
back in business @ 380mhz mem

check the new sig

[xman01]

what cooling did you use to achieve the core/mem clocks

[d]g[ts]

just to be sure try out a few benchies to confirm it, since I got my gains from the XT bios/XT id combo. And you are running a Pro bios/xt id ( I would have done this myself, but killed the card within a few days of these tests)

IF you can confirm the gains with a pro bios, and XT id then it will save many in the future time of finding "the right bios"

[d]g[ts]

We posted at near same time LOL
I used a maze4 WB on those runs.

[xman01]

gonna test it out now

btw for the WR latency and MemRR
lower is better?

[d]g[ts]

That i cannot answer sine all those timmings confuse my small brain. which is why i started messing with device ID's. just simpler.

[xman01]

heh true
i had dropped wr latency to 1.0 from 1.5 seemed stable

prelim test cat 4.12b on winxp sp2 w no unnecesaary apps, just for games
using 3dmark03 340
stock bios 9800 pro w 9800pro ID @ 430/370 = 6035 no vga tweaks
stock bios 9800 pro w 9800xt ID @ 430/370 = 6295 no vga tweaks

[xman01]

the marks in my sig have to change
have to test 3dmark 01

[d]g[ts]

Nice results. Since there are no compare links I will guess that the increases came in GT2, and GT3 correct? Either way tho it seems you have found the "right XT bios"

[xman01]

yea
i can post screen dumps of it

i'm also trying to get some ppl with oc'd pros to do the dev id also

[xman01]

9800pro and the xt 3dmark03 scores
using the stock BBA bios

[d]g[ts]

How about max mem clocks? they still doing 380?

[xman01]

yeah
i can do 380 just as easy as before

still looking at what i can do before i vmolt