G400 and 32 bit rendering

[CHHAS]

I have a G400 16 MB, P3 500@560 & 192 mb RAM

On UT and 3D Mark 99 MAX / 2000 I get a rather substantial drop i frame rates at 32 bit colordepth at 1024x768 and 1152x864, does anyone else have the same problems ?

3D Mark 99 MAX

Game 1 Race

Resolution FPS
800x600x16 58,0
800x600x32 54,1
1024x768x16 51,3
1024x768x32 37,3
1152x864x16 44,0
1152x864x32 29,1

when I overclock to 160/180

Resolution FPS
800x600x16 58,8
800x600x32 56,0
1024x768x16 54,7
1024x768x32 41,1
1152x864x16 49,5
1152x864x32 33,1

[Scytale]

UT is known to take a big hit at 32bpp. My late HDD is holding my 3DMark scores, but yours don't look out of the ordinary.

[CHHAS]

I was afraid so .....

It is nice, however, to be able run UT at 1280x1024x16 smoothly

[MadCat]

Its your 16mb card. 1024x768x32 DB w/16-bit Z costs you nearly 5mb for the framebuffer alone (compared with 3mb for 16-bit). Plus, all the textures are twice as big at 32-bit, as the textures are also stored on the card with 32-bit accuracy. As a result, unless you use low-quality textures, your card is forced to do a lot of AGP-texturing with 32-bit color turned on. Hence the slowdown.

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[Humus]

A little correction of Madmats comment:
The textures in UT isn't 32bit by default, even if you have 32 bit framebuffer. To use 32 bit textures, you must enable it in UnrealTournament.ini, but it gives almost no differens in quality.

Optimization tips:
Edit you're unrealtournament.ini file and set UseTripleBuffering=False, this saves over 3 meg videomemory in 1024x768x32.

Also set CacheSizeMegs=<Something large, like half your RAM>

With this settings it should run smoothly at 1024x768x32, at least it does for me.

[Humus]

Oops, something disappeared ...

SetCacheMegs= something large, like half your RAM

[Humus]

Hey, i'm stupid ...

I mean CacheSizeMegs= something large, like half your RAM