GeForce 840M vs Radeon R6 Kaveri

In this comparison between GeForce 840M 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 840M will be the best choice, for others Radeon R6 Kaveri will be their preference. Study the comparison tables below and make your choice.

GeForce 840M and Radeon R6 Kaveri are Laptop Graphics Cards

Note: GeForce 840M 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 840M or Radeon R6 Kaveri here:

Main Specs

  GeForce 840M Radeon R6 Kaveri
Power consumption (TDP) 33 Watt
Interface PCIe 3.0 x8
Memory type DDR3
Maximum RAM amount 4 GB
Display Connectors No outputs
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  • Both cards are used in Laptops.
  • GeForce 840M is build with Maxwell architecture, and Radeon R6 Kaveri - with GCN 1.1.
  • Core clock speed of GeForce 840M is 496 MHz higher, than Radeon R6 Kaveri.
  • GeForce 840M and Radeon R6 Kaveri are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 1−2
medium / 1080p 3−4 0−1
The average gaming FPS of GeForce 840M in Assassin's Creed Odyssey is 1200% more, than Radeon R6 Kaveri.

Full Specs

  GeForce 840M Radeon R6 Kaveri
Architecture Maxwell GCN 1.1
Code name N15S-GT Kaveri
Type Laptop Laptop
Release date 12 March 2014 4 June 2014
Pipelines 384 384
Core clock speed 1029 MHz 533 MHz
Boost Clock 1124 MHz 654 MHz
Transistor count 2410 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98
Floating-point performance 863.2 gflops
Memory bus width 64 Bit 64/128 Bit
Memory clock speed 2000 MHz
Memory bandwidth 16.02 GB/s
Shared memory - +
DirectX 12 (11_0) DirectX 12 (FL 12_0), Shader 5.0
Shader Model 5.1
OpenGL 4.5
OpenCL 1.2
Vulkan 1.1.126
CUDA +
Bus support PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256) 92 Mh/s
Laptop size medium sized medium sized
Optimus +
GPU Boost 2.0
GameWorks +
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