heuser.mar...@freenet.de wrote:
On Aug 30, 8:42 am, Drew <GoggleD...@gmail.com> wrote:
Well on the back of my 2 x 1.0.1 boards there is a capacitor...maybe
thats the difference. Anyone confirm if there is a capacitor on the
back of the 1.0.2 board?
I don't have the card but a photo of the 1.02 backside and it
doesn't have a capacitor there.
Judging by ebay auctions the 1.02 seems to be much more common
than the 1.01.
If the capacitor is a small value (less than 0.01uF), then it is
used to slow down a signal that was most likely creating a "race"
condition on some cards.
If the capacitor is 0.01uF or bigger, then it is a bypass cap
that was installed to solve a power glitch problem.
Either way, the 1.02 version apparently altered the logic in
the gate array to eliminate the need for the cap--and possibly
in a way that lowered the average upper limit on card speed.
(This suggests that the cap is probably a small cap, and a race
condition was the problem it was fixing.)