GeForce GT 640M LE vs Radeon R6 Kaveri

In this comparison between GeForce GT 640M LE and Radeon R6 Kaveri you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640M LE will be the best choice, for others Radeon R6 Kaveri will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE and Radeon R6 Kaveri are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon R6 Kaveri are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 640M LE or Radeon R6 Kaveri here:

Main Specs

  GeForce GT 640M LE Radeon R6 Kaveri
Power consumption (TDP) 20 Watt
Interface PCIe 2.0 x16
Memory type DDR3\DDR5
Maximum RAM amount 2 GB
Display Connectors No outputs
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  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon R6 Kaveri - with GCN 1.1.
  • GeForce GT 640M LE and Radeon R6 Kaveri are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 1−2 1−2
medium / 1080p 0−1 0−1
GeForce GT 640M LE and Radeon R6 Kaveri have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GT 640M LE Radeon R6 Kaveri
Architecture Fermi / Kepler GCN 1.1
Code name N13P-LP Kaveri
Type Laptop Laptop
Release date 22 March 2012 4 June 2014
Pipelines 384 384
Core clock speed 533 MHz
Boost Clock 654 MHz
Transistor count 585 million 2410 Million
Manufacturing process technology 28 nm 28 nm
Floating-point performance 384.0 gflops
Memory bus width 128bit 64/128 Bit
Memory clock speed 1800 - 4000 MHz
Shared memory - +
DirectX 12 API DirectX 12 (FL 12_0), Shader 5.0
Shader Model 5.1
OpenGL 4.5
OpenCL 1.1
Vulkan N/A
CUDA +
CUDA cores Up to 384
Bus support PCI Express 2.0, PCI Express 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 14 Mh/s
Laptop size medium sized medium sized
Optimus +
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