First post, by gandhig
i bought a modern graphics card (NVidia GT 520) with PCI interface for my old P3 system(in my signature) to play classic games upto 2001. unfortunately i didn't do much research on compatibility and paid the price. the card was not getting detected during boot. after a lot of struggle for an year, i was able to get it automatically detected by my bios after modding it. but still the system's game performance in old classics like deus ex 1, half life 1 etc are relatively poor. my 3dmark 2001 se scores are:
total=5443, game1(low,high)=59.9, 17.6 fps, game2(low,high)=107.3, 55.9 fps, game3(low,high)=65,27.9 fps, game4=54.7 fps (see the low fps in game1 for high settings)
i have tweaked the via chipset to get the bandwidth efficiency upto 95% in sandra 2003.
i don't know whether the problem is with the via chipset or due to pci slot bandwidth limitation or other issues.
is there a tool/utility to benchmark the pci throughput and check the burst transfers between my cpu to host bridge to pci-pcie bridge to gpu and vice versa. i even changed the pci latency timers of host bridge, pci to pci-e brige(onboard my gpu) but it only resulted in reduced performance. i also tweaked the via chipset registers related to pci bus flow, arbitration etc., but with no improvement.
please help me by sharing the pci dumps of a similar via chipset based good p3 motherboards (asus/abit/gigabyte etc).