Thanks for the replies Chuck and Kit.
Specifically the chipsets in my Gigabyte Motherboard are
AMD 761 ( Memory,PCI,AGP controller )
VIA VT2C686B ( PCI Super I/O Peripheral controller )
i think the AMD 761 is the main chipset. This controls
the PCI slot.
The PC was bought 2002.
So there's a plus point to get the 2496
since Chuck's was bought 5+ years back.
They may have solved any problems.
I'm tired of hearing the hiss on the Vibra.
I just got an AT2020. It records well, but
I have to be very careful setting the levels right.
I have to make the signal hot enough without
making the hiss too loud. I dream of the day
when the hiss will just go away. It distracts
me whenever i record. I'd like to be able to
crank the pre amps on the mixer because the
audio always sounds bigger when cranked a bit,
but there's always that hiss.
Regarding latency, I don't think I have noticed
it very often. But there was one time i recorded
some rough tracks. Blues guitar with just lead and rhythm.
I noticed there was a kind of "micro-lag". Like the lead wasn't
in sync with the rhythm. It could be my loose playing,
but I haven't experienced any serious problems with latency.
Even when monitoring since i don't send the card output
back to the mixer. I believe that causes a delay during playback with a
mixer without the 3-4 alt.
Thanks for the helpful points guys.