I just bought NoteCaddy so I'm working through the "NoteCaddy Performance Guide" [pdf]:
On page 2 it recommends going to PostgreSQL 9.0, but I suspect this is guide is a bit old
Windows 7 64-bit
Intel 4-core i5-2500K CPU @ 3.30GHz
Mechanical HDD [7200rpm]
PostgreSQL 8.4 32-bit
 Given my system spec [which I'm not changing for a year or two!] is it worthwhile to upgrade to PostgreSQL 9.x?
 If your answer is "yes"...
What version should I download [is there a 64-bit compatible PostgreSQL 9.x for example]?
Please supply DL link for best PG version & installation instructions