GeForce GT 555M 3 GB vs Radeon HD 7640G

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Primary details

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

Place in the ranking1060not rated
Place by popularitynot in top-100not in top-100
Power efficiency2.33no data
ArchitectureTeraScale 3 (2010−2013)Fermi (2010−2014)
GPU code nameDevastator LiteGF106
Market segmentLaptopLaptop
Release date15 May 2012 (12 years ago)24 March 2011 (13 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 cores256144
Core clock speed496 MHz590 MHz
Boost clock speed685 MHzno data
Number of transistors1,303 million1,170 million
Manufacturing process technology32 nm40 nm
Power consumption (TDP)35 Watt35 Watt
Texture fill rate10.9614.16
Floating-point processing power0.3507 TFLOPS0.3398 TFLOPS
ROPs824
TMUs1624

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).

Laptop sizemedium sizedno data
InterfaceIGPPCIe 2.0 x16
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 typeSystem SharedDDR3
Maximum RAM amountSystem Shared3 GB
Memory bus widthSystem Shared192 Bit
Memory clock speedSystem Shared900 MHz
Memory bandwidthno data43.2 GB/s
Shared memory+no data

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 outputsPortable Device Dependent

API compatibility

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

DirectX11.2 (11_0)12 (11_0)
Shader Model5.05.1
OpenGL4.44.6
OpenCL1.21.1
VulkanN/AN/A
CUDA-2.1

Pros & cons summary


Recency 15 May 2012 24 March 2011
Chip lithography 32 nm 40 nm

HD 7640G has an age advantage of 1 year, and a 25% more advanced lithography process.

We couldn't decide between Radeon HD 7640G and GeForce GT 555M 3 GB. We've got no test results to judge.


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

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AMD Radeon HD 7640G
Radeon HD 7640G
NVIDIA GeForce GT 555M 3 GB
GeForce GT 555M 3 GB

Comparisons with similar GPUs

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Community ratings

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2.9 166 votes

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3.8 9 votes

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Questions & comments

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