GeForce GT 640M LE vs Radeon HD 6850M

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640M LE and Radeon HD 6850M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 640M LE and Radeon HD 6850M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

GeForce GT 640M LE and Radeon HD 6850M are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon HD 6850M 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 HD 6850M here:

Main Specs

  GeForce GT 640M LE Radeon HD 6850M
Power consumption (TDP) 20 Watt 50 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Memory type DDR3\DDR5 DDR3, GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs No outputs
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  • Radeon HD 6850M has 150% more power consumption, than GeForce GT 640M LE.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • GeForce GT 640M LE has 1 GB more memory, than Radeon HD 6850M.
  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon HD 6850M - with Terascale 2.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and Radeon HD 6850M - by 40 nm process technology.
  • Memory clock speed of GeForce GT 640M LE is 1000 MHz higher, than Radeon HD 6850M.

Game benchmarks

high / 1080p 0−1 2−3
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 1−2 12−14
medium / 1080p 0−1 3−4
The average gaming FPS of Radeon HD 6850M in Assassin's Creed Odyssey is 1200% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon HD 6850M
Architecture Fermi / Kepler Terascale 2
Code name N13P-LP Granville Pro/LP
Type Laptop Laptop
Release date 22 March 2012 6 January 2011
Pipelines 384 800
Core clock speed 575 / 675 MHz
Transistor count 585 million 1,040 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 27.00
Floating-point performance 384.0 gflops 1,080.0 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 800 MHz
Memory bandwidth 25.6 GB/s
Shared memory - -
DirectX 12 API 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.5 4.4
OpenCL 1.1 1.2
Vulkan N/A 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 large
Optimus +
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