GeForce 840M vs Radeon 520

Find out if it is worth upgrading your current GPU setup by comparing GeForce 840M and Radeon 520. 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 840M and Radeon 520. 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 840M and Radeon 520 are Laptop Graphics Cards

Note: GeForce 840M and Radeon 520 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 520 here:

Main Specs

  GeForce 840M Radeon 520
Power consumption (TDP) 33 Watt 50 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3 DDR3, GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x VGA
  Check Price Check Price
  • Radeon 520 has 51% more power consumption, than GeForce 840M.
  • Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
  • GeForce 840M has 2 GB more memory, than Radeon 520.
  • Both cards are used in Laptops.
  • GeForce 840M is build with Maxwell architecture, and Radeon 520 - with GCN 1.0.
  • Core clock speed of Radeon 520 is 1 MHz higher, than GeForce 840M.
  • GeForce 840M and Radeon 520 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon 520 is 250 MHz higher, than GeForce 840M.

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 520.

Full Specs

  GeForce 840M Radeon 520
Architecture Maxwell GCN 1.0
Code name N15S-GT Oland
Type Laptop Laptop
Release date 12 March 2014 21 March 2017
Pipelines 384 320
Core clock speed 1029 MHz 1030 MHz
Boost Clock 1124 MHz
Transistor count 1,040 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 20.60
Floating-point performance 863.2 gflops 659.2 gflops
Memory bus width 64 Bit 64 Bit
Memory clock speed 2000 MHz 2250 MHz
Memory bandwidth 16.02 GB/s 16 GB/s
Shared memory - -
DirectX 12 (11_0) 12.0
Shader Model 5.1 5.0
OpenGL 4.5 4.6
OpenCL 1.2 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
Optimus +
GPU Boost 2.0
GameWorks +
  Check Price Check Price