GeForce 4 MX 420
GeForce4 MX420 is the cheapest representative of the budget line. The entire NVIDIA GeForce4 MX series provided a very good quality of image output to the monitor, completely incomparable to that provided by motherboards based on NVIDIA GeForce2 MX/MX200/MX400. The GeForce4 MX420 chip, positioned by NVIDIA as a replacement for the GeForce2 MX400, outperformed the NVIDIA GeForce2 MX400 in terms of speed due to the use of technologies for increasing the efficiency of video memory usage.
Specifications GeForce 4 MX 420
| Name | GeForce 4MX420 |
| Core | NV17S |
| Process technology (µm) | 0.15 |
| Transistors (million) | 29 |
| Core frequency | 250 |
| Memory frequency (DDR) | 166 (333) |
| Bus and memory type | SDR-128 bit / DDR-64 bit |
| Bandwidth (Gb/s) | 2.6 |
| Pixel pipelines | 2 |
| TMU per conveyor | 2 |
| textures per clock | 4 |
| textures per pass | 2 |
| Vertex conveyors | No |
| Pixel Shaders | 0.5 (emulation) |
| Vertex Shaders | 1.1 (emulation) |
| Fill Rate (Mpix/s) | 500 |
| Fill Rate (Mtex/s) | 1000 |
| DirectX | 7.1 |
| Anti-Aliasing (Max) | MS - 4x |
| Anisotropic Filtering (Max) | 2x |
| Memory | 64 / 128 MB |
| Interface | AGP4x |
| RAMDAC | 2x350 MHz |
Moreover, in some cases, the superiority reached 50%. Nevertheless, functionally the GeForce4 MX420, despite all the architectural refinements, did not differ much from the GeForce4 MX400, and it can only be called "the faster GeForce2 MX400".
The only real advantage the NVIDIA GeForce4 MX420 has over the GeForce2 MX is its full-screen anti-aliasing multisampling, which provides much less performance overhead than supersampling.