Sorry, it's my mistake, not to give the system data:
No, it's an Intel Pentium III (coppermine ?!) with 1000 MHz, 133 MHz FrontSiteBus (ASUS-Board), 1024 MB SDRAM.
Yes, with SuSE 7.3 I tried NvAgp = 1 and = 2, with less success, as far as I remember. In the actual system not yet, I'll try it again. Report of result will follow.