GeForce GT 420 OEM vs GT 820M

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Primary details

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

Place in the ranking993not rated
Place by popularitynot in top-100not in top-100
Power efficiency6.62no data
ArchitectureFermi 2.0 (2010−2014)Fermi (2010−2014)
GPU code nameGF117GF108
Market segmentLaptopDesktop
Release date27 November 2013 (11 years ago)3 September 2010 (14 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 cores9648
Core clock speed775 MHz700 MHz
Number of transistors585 million585 million
Manufacturing process technology28 nm40 nm
Power consumption (TDP)15 Watt50 Watt
Texture fill rate12.402.800
Floating-point processing power0.2976 TFLOPS0.1344 TFLOPS
ROPs84
TMUs164

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 x16PCIe 2.0 x16
Lengthno data145 mm
Widthno data1-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 typeDDR3DDR3
Maximum RAM amount1 GB1 GB
Memory bus width64 Bit128 Bit
Memory clock speed900 MHz900 MHz
Memory bandwidth14.4 GB/s28.8 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 ConnectorsNo outputs1x DVI, 1x HDMI, 1x VGA
HDMI-+

API compatibility

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

DirectX12 (11_0)12 (11_0)
Shader Model5.15.1
OpenGL4.64.6
OpenCL1.11.1
VulkanN/AN/A
CUDA2.12.1

Pros & cons summary


Recency 27 November 2013 3 September 2010
Chip lithography 28 nm 40 nm
Power consumption (TDP) 15 Watt 50 Watt

GT 820M has an age advantage of 3 years, a 42.9% more advanced lithography process, and 233.3% lower power consumption.

We couldn't decide between GeForce GT 820M and GeForce GT 420 OEM. We've got no test results to judge.

Be aware that GeForce GT 820M is a notebook card while GeForce GT 420 OEM is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA GeForce GT 820M
GeForce GT 820M
NVIDIA GeForce GT 420 OEM
GeForce GT 420 OEM

Comparisons with similar GPUs

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Community ratings

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3.3 121 vote

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3.7 181 vote

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Questions & comments

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