Radeon HD 6490M Mac Edition vs HD 7400G

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Primary details

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

Place in the ranking1173not rated
Place by popularitynot in top-100not in top-100
Power efficiency2.78no data
ArchitectureTeraScale 3 (2010−2013)TeraScale 2 (2009−2015)
GPU code nameScrapperSeymour
Market segmentLaptopLaptop
Release date2 October 2012 (12 years ago)2 May 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 cores192160
Core clock speed327 MHz750 MHz
Boost clock speed424 MHzno data
Number of transistors1,303 million370 million
Manufacturing process technology32 nm40 nm
Power consumption (TDP)17 Wattno data
Texture fill rate5.0886.000
Floating-point processing power0.1628 TFLOPS0.24 TFLOPS
ROPs44
TMUs128

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

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 SharedGDDR5
Maximum RAM amountSystem Shared256 MB
Memory bus widthSystem Shared64 Bit
Memory clock speedSystem Shared794 MHz
Memory bandwidthno data25.41 GB/s
Shared memory+-

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 outputsNo outputs

API compatibility

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

DirectX11.2 (11_0)11.2 (11_0)
Shader Model5.05.0
OpenGL4.44.4
OpenCL1.21.2
VulkanN/AN/A

Pros & cons summary


Recency 2 October 2012 2 May 2011
Chip lithography 32 nm 40 nm

HD 7400G has an age advantage of 1 year, and a 25% more advanced lithography process.

We couldn't decide between Radeon HD 7400G and Radeon HD 6490M Mac Edition. 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 7400G
Radeon HD 7400G
AMD Radeon HD 6490M Mac Edition
Radeon HD 6490M Mac Edition

Comparisons with similar GPUs

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