GeForce4 MX 420 vs Radeon HD 7950 Boost

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	GCN 1.0 (2011−2020)	Celsius (1999−2005)
GPU code name	Tahiti	NV17 A3
Market segment	Desktop	Desktop
Release date	22 June 2012 (12 years ago)	6 February 2002 (22 years ago)
Launch price (MSRP)	$449	no data

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.

Pipelines / CUDA cores	1792	no data
Core clock speed	850 MHz	250 MHz
Boost clock speed	925 MHz	no data
Number of transistors	4,313 million	29 million
Manufacturing process technology	28 nm	150 nm
Power consumption (TDP)	200 Watt	no data
Texture fill rate	103.6	1.000
Floating-point processing power	3.315 TFLOPS	no data
ROPs	32	2
TMUs	112	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 3.0 x16	AGP 4x
Length	274 mm	no data
Width	2-slot	1-slot
Supplementary power connectors	2x 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	GDDR5	SDR
Maximum RAM amount	3 GB	64 MB
Memory bus width	384 Bit	64 Bit
Memory clock speed	1250 MHz	166 MHz
Memory bandwidth	240.0 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	1x DVI, 1x HDMI, 2x mini-DisplayPort	1x VGA, 1x S-Video
HDMI	+	-

API compatibility

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

DirectX	12 (11_1)	8.0
Shader Model	5.1	no data
OpenGL	4.6	1.3
OpenCL	1.2	N/A
Vulkan	1.2.131	N/A

Pros & cons summary

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Recency	22 June 2012	6 February 2002
Maximum RAM amount	3 GB	64 MB
Chip lithography	28 nm	150 nm

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