GeForce 840M vs Radeon R6 Carrizo

If you are going to buy a new graphics card and are choosing between GeForce 840M and Radeon R6 Carrizo, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 840M stacks up against Radeon R6 Carrizo, check out specs charts below.

GeForce 840M and Radeon R6 Carrizo are Laptop Graphics Cards

Note: GeForce 840M and Radeon R6 Carrizo 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 Carrizo here:

Main Specs

  GeForce 840M Radeon R6 Carrizo
Power consumption (TDP) 33 Watt 12-35 Watt
Interface PCIe 3.0 x8
Memory type DDR3
Maximum RAM amount 4 GB
Display Connectors No outputs
  Check Price Check Price
  • GeForce 840M has 175% more power consumption, than Radeon R6 Carrizo.
  • Both cards are used in Laptops.
  • GeForce 840M is build with Maxwell architecture, and Radeon R6 Carrizo - with GCN 1.2/2.0.
  • GeForce 840M and Radeon R6 Carrizo are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 10−12
medium / 1080p 3−4 2−3
The average gaming FPS of GeForce 840M in Assassin's Creed Odyssey is 33% more, than Radeon R6 Carrizo.

Full Specs

  GeForce 840M Radeon R6 Carrizo
Architecture Maxwell GCN 1.2/2.0
Code name N15S-GT Carrizo
Type Laptop Laptop
Release date 12 March 2014 4 June 2015
Pipelines 384 384
Core clock speed 1029 MHz
Boost Clock 1124 MHz 800 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 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 +
  Check Price Check Price