GeForce4 MX 420 vs GeForce GT 645 OEM

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Primary details

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

Place in the rankingnot rated1565
Place by popularitynot in top-100not in top-100
ArchitectureFermi 2.0 (2010−2014)Celsius (1999−2005)
GPU code nameGF114NV17 A3
Market segmentDesktopDesktop
Release date24 April 2012 (13 years ago)6 February 2002 (23 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.

Pipelines / CUDA cores288no data
Core clock speed776 MHz250 MHz
Number of transistors1,950 million29 million
Manufacturing process technology40 nm150 nm
Power consumption (TDP)102 Wattno data
Texture fill rate37.251.000
Floating-point processing power0.894 TFLOPSno data
ROPs242
TMUs484

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).

InterfacePCIe 2.0 x16AGP 4x
Length210 mmno data
Width2-slot1-slot
Supplementary power connectorsno dataNone

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 typeGDDR5SDR
Maximum RAM amount1 GB64 MB
Memory bus width192 Bit64 Bit
Memory clock speed957 MHz166 MHz
Memory bandwidth91.87 GB/s1.328 GB/s

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors2x DVI, 1x mini-HDMI1x VGA, 1x S-Video
HDMI+-

API and SDK compatibility

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

DirectX12 (11_0)8.0
Shader Model5.1no data
OpenGL4.61.3
OpenCL1.1N/A
VulkanN/AN/A
CUDA2.1-

Pros & cons summary


Recency 24 April 2012 6 February 2002
Maximum RAM amount 1 GB 64 MB
Chip lithography 40 nm 150 nm

GT 645 OEM has an age advantage of 10 years, a 1500% higher maximum VRAM amount, and a 275% more advanced lithography process.

We couldn't decide between GeForce GT 645 OEM and GeForce4 MX 420. We've got no test results to judge.

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NVIDIA GeForce GT 645 OEM
GeForce GT 645 OEM
NVIDIA GeForce4 MX 420
GeForce4 MX 420

Other comparisons

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Community ratings

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3 2 votes

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3.4 27 votes

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