Has anyone noticed any performance improvements/problems under 10.3.4?

From IMG:
Gamers wondering if the latest update to OS X contains anything meaningful for games development may want to take a look at The Brad Hole, a blog maintained by Brad Oliver. One of his latest entries includes some information regarding a new OpenGL feature that seems to improve performance when used. Apple MacOS 10.3.4 includes a new OpenGL feature called "vertex buffer objects" or VBO for short. It's essentially a method of storing vertex data directly on the video card to eliminate CPU overhead. Apple had implemented a similar extension in the past, called "vertex array range" (VAR) that was essentially a reworking of the Nvidia extension of a similar name. The main difference between VBO and VAR (aside from the API looking fairly different) is that VBO is a cross-platform, ARB-approved way of achieving the same speed-up.

A pity those feature cannot help MacMame...

I upgraded to 10.3.4 today and tried a fair few of the 3D/vector games in MacMame 0.77 I did not notice any improvement on the choppy games. 2D games ran full speed as they normally do
I couldn't really see any difference.

It is feasable that some games may be improved though, straight after trying MacMame I loaded a few N64 roms in Mupen and noticed slight improvement on a couple of games.

A little ot: if i pass from 10.2.8 to latest 10.3.4 on an old g3 400mhz with 384mb ram, i've get a little bit of improvement in the general speed?

Fava,
Yes I think there is some general speed improvement, most noticeable in the Finder.

But first check that your system meets the hardware requirements for 10.3, built-in USB is required for a G3 if I recall correctly.

That's no problem, i've an old iMac Dv SE

Anyone have try to compile Macmame using Codewarrior 9 with Panther? I try in a powerbook and i got 3 error.....

The thing that will probably hold you back the most is the built in 8MB Graphics card on the Imac DV SE. Its probably scraping along the bare minimum system requirements for OS X.