Graphics Cards
A comparison of Nvidia GeForce 3, GeForce 4, and ATI Radeon 8500
There are various versions of each card. The MX is the low-end “budget” version
of each, and there are various other high-end versions.
GeForce 4 MX
http://www.byte.com/documents/s=7129/byt1018290506806/0415_patrizio.html
In previous MX cards, it was the standard GeForce chip, just running at a slower clock
speed. With the GeForce 4 MX, the design itself is different. So overclocking utilities
that have worked on previous GeForce cards won't work here, and because the GeForce 4
MX is lacking pieces of the high-end chip, you won't be able to overclock the card and
get the equivalent of a high-end product. The GeForce 4 MX is designed for the home
user or business user who mostly does 2D work and occasionally plays slower paced
games
A major differentiator between the two is that the GeForce 4 has the nfiniteFX II engine,
a component of the chip that handles pixel and vertex drawing, while the MX product
does not. The most important changes to the nfiniteFX II engine are the dual vertex
shaders and pixel shaders, which make the GF4 twice as fast as a GeForce 3.
The 4600 is the top of the line for nVidia. There are three GeForce
4 cards: the 4200, 4400 and 4600. All come with 128 MB of
memory. The 4600 runs at 300 MHz, has 325-MHz DDR memory
and sells for $399; the 4400 has a 275MHz clock speed with 275-
MHz DDR memory and costs $299; and the 4200 has a 250-MHz
clock speed with 250-MHz memory and will run you $199. The chip
clocks are locked, so overclocking utilities will not work like they
have in the past.
http://maccentral.macworld.com/news/0202/06.nvidia.php