GeForce4 MX 420 vs ATI Radeon X850 CrossFire Edition

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	R400 (2004−2008)	Celsius (1999−2005)
GPU code name	R480	NV17 A3
Market segment	Desktop	Desktop
Release date	10 September 2006 (18 years ago)	6 February 2002 (22 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Core clock speed	520 MHz	250 MHz
Number of transistors	160 million	29 million
Manufacturing process technology	130 nm	150 nm
Texture fill rate	8.320	1.000
ROPs	16	2
TMUs	16	4

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 1.0 x16	AGP 4x
Width	2-slot	1-slot
Supplementary power connectors	1x 6-pin	None

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR3	SDR
Maximum RAM amount	256 MB	64 MB
Memory bus width	256 Bit	64 Bit
Memory clock speed	540 MHz	166 MHz
Memory bandwidth	34.56 GB/s	1.328 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

2x DVI

1x VGA, 1x S-Video

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	9.0b (9_2)	8.0
OpenGL	2.0	1.3
OpenCL	N/A	N/A
Vulkan	N/A	N/A

Pros & cons summary

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Recency	10 September 2006	6 February 2002
Maximum RAM amount	256 MB	64 MB
Chip lithography	130 nm	150 nm

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