Intel 775 / Socket T stock heatsinks

[Ray_GTI-R]

Just a quick question - or two - as I'm moving over from 478-pin stuff.

I have 4 different types of Intel 775 / Socket T stock heatsinks.

1) is small with an aluminium core, weight approx 330gm, 7-blade fan runs at approx 2,400rpm
2) is large with an aluminium core, weight approx 350gm, 9-blade fan runs at approx 2,200rpm
3) is small with a copper core, weight approx 460gm, 7-blade fan runs at approx 2,400rpm
4) is large with an copper core, weight approx 480gm, 9-blade fan runs at approx 2,200rpm

Does anyone know the stock CPU type/upper mhz limits for each type of hsf?

I've managed to lap one of these (type 4), pic below. Has anyone else?

Cheers, Ray
(BTW, I know shiny =/= flat, so I got it flat first, then shiny)

http://i65.photobucket.com/albums/h216/Ray_GTI-R/PC/CuBa.jpg

AFTER !!!
http://i65.photobucket.com/albums/h216/Ray_GTI-R/PC/ZzcuHeadOn1a.jpg