There have been over a million downloads of previous versions of Detonator drivers. Besides, the chip's core is clocked at 175 MHz, down from the GF2's 200MHz. As a result of this, the MX's memory bandwidth is only half that of the GF2. Theoretically, a 64 bit memory interface is also feasible, but all of the boards tested here use the 128bit memorybus. The main target here would obviously be ATi.
Closer inspection reveals some differences, though.
While the GeForce2 utilizes 4 renderpipes, which can each render two pixels per clock, the tuned-down MX has only two of those. It's predecessor, the GeForce 256 also had four pipelines - like the normal GF2 GTS, but these were limited to rendering one pixel per pipe each clockcycle. The MX's only advantage to GF 256 is its increased clock speed of 175 MHz, up from the GF256's 120 MHz. 64bit memory modules, while DDR memory is not planned. 64bit cards are not going to be very attractive for gamers though and will most likely show up in pre-built systems.