I ended up with the E4 version of the 3200+.. eh oh well. Still works great.
Alvino is right, my dad's workstation happens to have two 1gb sticks. One is a corsair 3200 and 2.5 cas, the other is a mushkin 3200 at 2.5 cas, and it runs in dual channel.
I don't know why my dad got 2 gigs of memory for that computer... it's not even used heavily.. just a 2.66ghz p4 with a geforcefx 5500.. no gaming.. nothing intensive.. just browsing the web and such..
As for not bottlenecking.. your not too far off, but not completely accurate.
Running half-life2 at 1600x1200 with 4xaa and everything else maxed (cept hdr, doesn't work with aa on nvidia cards..) the game runs smoothe, really nice. However, lowering the resolution and the aa does not improve performance much at all. It is the same with UT2004. It's most likely a CPU bottle neck.