Memory timings of X800XT

[TweakMaster]

Hello again people (lol im on a mission), i want to mess about with the timings of my gcard and would like to know how serious is it if i was to set wrong timings, its not like setting the timings on your normal memory as that is done through bios and if a mistakes made it can be easily undone but if i was to mess up timings on my gcard what would i likely experience?

Also any other users of the same card (made by ATI) got timings they suggest

 

[EastCoasthandle]

Don't do it...when I did it for my x850 it was hairy when tightening the timing...as this is the purpose of messing with timing. Although you get a boost you limit overclockability do to heat of the mems. Normally they don't take well to a boost of heat. However, if you keep them cool you should be ok. Here is the link and you do this at your own risk.

Before you start messing with your timing, first reduce your latency from whatever to around 64. If you can get away with it reduce it to 32. Save it so that it will always boot to memory so you don't have to keep changing on every xp reboot.

Here is the tweak for your

 

[TweakMaster]

Hi East Coast with that pci latency tool do i change the x800 primary adapter to 64 as its currently on 255 and seems like quite a drop.

I did perform my own tests yesterday but went out before posting results.. my results are pretty similar to that eshbach's except i found that if i changed all the timings to the timings that were safe i had no improvement whatsoever on fps but if i changed just the one timing (like when i was testing) i would get about a 1 fps boost (maybe that pci latency will help).. heres my results from yesterday - tests were using cs:s stress test:

TRCDRD:
Default - 7
6 - No Difference
5 - Major Artifcats

TRCDRW:
Default - 4
3 - 1 Fps Increase
2 - Artifacts

TRP:
Default - 5
4 - Major Artifacts

TRAS:
Default - 14
13 - .50 Fps Increase
12 - 1 Fps Increase
11 - Artifacts

TRRD:
Default - 5
4 - .50 Fps Increase
3 - Artifacts

TWR:
Default - 7
6 - No Difference
5 - Artifacts

TR2W:
Default - CL + 3
CL + 2 - 1 fps Increase

TW2R:
Default - 3
2 - 1 Fps Increase

TW2R SAME BANK:
DID NOT CHANGE AS I WAS WEARY

TR2R:
Default - 2
1 - No Difference

WR LATENCY:
Default - 1.5
1 - Major Artifacts

CAS LATENCY:
Default - 7
6 - Major Artifacts

CMD LATENCY:
DID NOT CHANGE AS I WAS WEARY

STR LATENCY:
DID NOT CHANGE AS I WAS WEARY

REFRESH RATE:
DID NOT CHANGE AS I WAS WEARY

MEM TRFC:
Default - 27
26 - No Difference
25 - .50 Fps Increase
24 - No Difference
Test Stopped

 

[EastCoasthandle]

Hello,

From what I remember, the best results are when you OC the Video Card, thats when things get a little hairy do to heat.

As far as PCI latency goes yes, you want to reduce the latency to 64. I figured that your timing was around 250 or so. Once you reduce it, then save the settings it will be night and day difference.

To use this program:
RIGHT CLICK ON THE item under "CLASS" section
SELECT CHANGE SETTINGS
PLACE THE CURSOR OVER THE WHITE BOX TO INPUT THE LATENCY TIMING
INPUT A LATENCY OF 128 OR 64 (INCREMENTS OF 8)
HIT THE ENTER KEY
GO TO "SETTINGS" (WHICH IS BESIDE FILE AND VIEW)
CLICK ON APPLY THEN CLICK SAVE
REBOOT THE SYSTEM
If any of the settings reset back to it's default go back to "SETTINGS" then click on "apply on startup"
REBOOT


TEST USING 3DMARK05
AND CS: S IF YOU HAVE IT.
REPORT ANY IMPROVEMENTS (IT WOULD HELP TO KNOW WHAT YOUR SCORE WAS PRIOR TO CHANGING YOUR LATENCY)

SETTINGS:
model high
texture high
water reflect all
shadow high
6x AA
shader high
verticle sync. diabled

 

[TweakMaster]

Soz about not replying till now, totally forgot about this post.. ive just used the latency tool and changed it from 255 to 64 but havent noticed any difference at all (in fact about a loss of 1 fps)

Cs Source settings:
model high
texture high
water reflect all
shadow high
2x AA
4x AF
shader high
verticle sync. diabled

255 Latency = 134.64 FPS
64 Latency = 133.47 FPS

I know the stress test will not always be the same fps result but that cant be right surely?

Also any idea's if tweaking the latency timing of the agp host to pci bridge will do anythin positive.. ive just noticed its on 16

 

[_33]

Incredibly helpful thread! Thanks to TweakMaster for the time taken to test each memory parms.