GeForce GT 640 vs Radeon HD 6550A

When choosing between GeForce GT 640 and Radeon HD 6550A, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640 and Radeon HD 6550A.

Main Specs

  GeForce GT 640 Radeon HD 6550A
Power consumption (TDP) 65 Watt 35 Watt
Interface PCIe 3.0 x16 MXM-A (3.0)
Supplementary power connectors None
Memory type DDR3 GDDR3
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GT 640 has 85% more power consumption, than Radeon HD 6550A.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and Radeon HD 6550A uses MXM-A (3.0) interface.
  • GeForce GT 640 and Radeon HD 6550A have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • GeForce GT 640 is build with Kepler architecture, and Radeon HD 6550A - with TeraScale 2.
  • Core clock speed of GeForce GT 640 is 352 MHz higher, than Radeon HD 6550A.
  • GeForce GT 640 is manufactured by 28 nm process technology, and Radeon HD 6550A - by 40 nm process technology.
  • Memory clock speed of GeForce GT 640 is 182 MHz higher, than Radeon HD 6550A.

Game benchmarks

high / 1080p 2−3 0−1
ultra / 1080p 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 1−2
medium / 1080p 5−6 0−1
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 1400% more, than Radeon HD 6550A.

Full Specs

  GeForce GT 640 Radeon HD 6550A
Architecture Kepler TeraScale 2
Code name GK107 Pinewood
Type Desktop Desktop
Release date 5 June 2012 7 February 2011
Pipelines 384 480
Core clock speed 902 MHz 550 MHz
Transistor count 1,270 million 627 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 28.86 13.20
Floating-point performance 692.7 gflops 624.0 gflops
Length 145 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 1782 MHz 1600 MHz
Memory bandwidth 28.51 GB/s 25.6 GB/s
DirectX 12 (11_0) 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.6 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126 N/A
CUDA 3.0
Bitcoin / BTC (SHA256) 24 Mh/s
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