Radeon R9 M390 Mac Edition vs GeForce GT 640M

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Primary details

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

Place in the ranking901not rated
Place by popularitynot in top-100not in top-100
Power efficiency5.31no data
ArchitectureKepler (2012−2018)GCN 1.0 (2012−2020)
GPU code nameGK107Pitcairn
Market segmentLaptopLaptop
Release date22 March 2012 (13 years ago)5 May 2015 (10 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 cores3841024
Core clock speedUp to 625 MHz958 MHz
Boost clock speed645 MHzno data
Number of transistors1,270 million2,800 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)32 Watt80 Watt
Texture fill rate20.0061.31
Floating-point processing power0.48 TFLOPS1.962 TFLOPS
ROPs1632
TMUs3264
L1 Cache32 KB256 KB
L2 Cache256 KB512 KB

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
Bus supportPCI Express 2.0, PCI Express 3.0no data
InterfacePCIe 3.0 x16PCIe 3.0 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 typeDDR3\GDDR5GDDR5
Maximum RAM amount2 GB2 GB
Memory bus width128bit256 Bit
Memory clock speed900 MHz1365 MHz
Memory bandwidthUp to 64.0 GB/s174.7 GB/s
Shared memory--

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 ConnectorsNo outputsNo outputs
HDMI+-
HDCP+-
Maximum VGA resolutionUp to 2048x1536no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray+-
Optimus+-

API and SDK support

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

DirectX12 API12 (11_1)
Shader Model5.15.1
OpenGL4.54.6
OpenCL1.11.2
Vulkan1.1.1261.2
CUDA+-

Pros & cons summary


Recency 22 March 2012 5 May 2015
Power consumption (TDP) 32 Watt 80 Watt

GT 640M has 150% lower power consumption.

R9 M390 Mac Edition, on the other hand, has an age advantage of 3 years.

We couldn't decide between GeForce GT 640M and Radeon R9 M390 Mac Edition. We've got no test results to judge.

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NVIDIA GeForce GT 640M
GeForce GT 640M
AMD Radeon R9 M390 Mac Edition
Radeon R9 M390 Mac Edition

Other comparisons

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Community ratings

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3.6 329 votes

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