Radeon 550X 640SP vs GeForce GT 650M Mac Edition

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Primary details

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

Place in the ranking1023not rated
Place by popularitynot in top-100not in top-100
Power efficiency2.45no data
ArchitectureKepler (2012−2018)GCN 4.0 (2016−2020)
GPU code nameGK107Lexa
Market segmentLaptopDesktop
Release date12 July 2012 (13 years ago)11 April 2018 (7 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 cores384640
Core clock speed900 MHz1019 MHz
Boost clock speedno data1071 MHz
Number of transistors1,270 million2,200 million
Manufacturing process technology28 nm14 nm
Power consumption (TDP)45 Watt50 Watt
Texture fill rate28.8042.84
Floating-point processing power0.6912 TFLOPS1.371 TFLOPS
ROPs1616
TMUs3240
L1 Cache32 KB160 KB
L2 Cache256 KB256 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).

InterfacePCIe 3.0 x16PCIe 3.0 x8
Widthno dataIGP
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 typeGDDR5GDDR5
Maximum RAM amount512 MB4 GB
Memory bus width128 Bit64 Bit
Memory clock speed1254 MHz1500 MHz
Memory bandwidth80.26 GB/s48 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 ConnectorsNo outputs1x DVI, 1x HDMI, 1x DisplayPort
HDMI-+

API and SDK support

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

DirectX12 (11_0)12 (12_0)
Shader Model5.16.4
OpenGL4.64.6
OpenCL1.22.0
Vulkan1.1.1261.2.131
CUDA3.0-

Pros & cons summary


Recency 12 July 2012 11 April 2018
Maximum RAM amount 512 MB 4 GB
Chip lithography 28 nm 14 nm
Power consumption (TDP) 45 Watt 50 Watt

GT 650M Mac Edition has 11.1% lower power consumption.

550X 640SP, on the other hand, has an age advantage of 5 years, a 700% higher maximum VRAM amount, and a 100% more advanced lithography process.

We couldn't decide between GeForce GT 650M Mac Edition and Radeon 550X 640SP. We've got no test results to judge.

Be aware that GeForce GT 650M Mac Edition is a notebook graphics card while Radeon 550X 640SP is a desktop one.

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NVIDIA GeForce GT 650M Mac Edition
GeForce GT 650M Mac Edition
AMD Radeon 550X 640SP
Radeon 550X 640SP

Other comparisons

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