GeForce 840M vs Radeon Sky 500

In this comparison between GeForce 840M and Radeon Sky 500 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 Sky 500 will be their preference. Study the comparison tables below and make your choice.

GeForce 840M is a Laptop Graphics Card

Note: GeForce 840M is only used in laptop graphics. It has 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 here:

Main Specs

  GeForce 840M Radeon Sky 500
Power consumption (TDP) 33 Watt 150 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs 1x DisplayPort
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  • Radeon Sky 500 has 354% more power consumption, than GeForce 840M.
  • GeForce 840M is connected by PCIe 3.0 x8, and Radeon Sky 500 uses PCIe 3.0 x16 interface.
  • GeForce 840M and Radeon Sky 500 have maximum RAM of 4 GB.
  • GeForce 840M is used in Laptops, and Radeon Sky 500 - in Desktops.
  • GeForce 840M is build with Maxwell architecture, and Radeon Sky 500 - with GCN 1.0.
  • Core clock speed of GeForce 840M is 79 MHz higher, than Radeon Sky 500.
  • GeForce 840M and Radeon Sky 500 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon Sky 500 is 2800 MHz higher, than GeForce 840M.

Game benchmarks

high / 1080p 1−2 35−40
ultra / 1080p 0−1 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 12−14 60−65
medium / 1080p 3−4 40−45
The average gaming FPS of Radeon Sky 500 in Assassin's Creed Odyssey is 683% more, than GeForce 840M.

Full Specs

  GeForce 840M Radeon Sky 500
Architecture Maxwell GCN 1.0
Code name N15S-GT Pitcairn
Type Laptop Desktop
Release date 12 March 2014 27 March 2013
Pipelines 384 1280
Core clock speed 1029 MHz 950 MHz
Boost Clock 1124 MHz
Transistor count 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 76.00
Floating-point performance 863.2 gflops 2,432 gflops
Length 242 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 4800 MHz
Memory bandwidth 16.02 GB/s 154 GB/s
Shared memory -
DirectX 12 (11_0) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA +
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
Bitcoin / BTC (SHA256) 92 Mh/s
Laptop size medium sized
Optimus +
Form factor full height / full length
DisplayPort count 1
Dual-link DVI support +
GPU Boost 2.0
GameWorks +
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