GeForce 840A vs Radeon HD 8870M

In this comparison between GeForce 840A and Radeon HD 8870M 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 840A will be the best choice, for others Radeon HD 8870M will be their preference. Study the comparison tables below and make your choice.

Radeon HD 8870M is a Laptop Graphics Card

Note: Radeon HD 8870M 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 Radeon HD 8870M here:

Main Specs

  GeForce 840A Radeon HD 8870M
Power consumption (TDP) 33 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Memory type DDR3 GDDR5, DDR3
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce 840A is connected by PCIe 3.0 x8, and Radeon HD 8870M uses PCIe 3.0 x16 interface.
  • GeForce 840A and Radeon HD 8870M have maximum RAM of 2 GB.
  • GeForce 840A is used in Desktops, and Radeon HD 8870M - in Laptops.
  • GeForce 840A is build with Maxwell architecture, and Radeon HD 8870M - with GCN.
  • Core clock speed of GeForce 840A is 304 MHz higher, than Radeon HD 8870M.
  • GeForce 840A and Radeon HD 8870M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 8870M is 2498 MHz higher, than GeForce 840A.

Game benchmarks

high / 1080p 3−4 7−8
ultra / 1080p 2−3 4−5
QHD / 1440p 0−1 0−1
low / 720p 14−16 18−20
medium / 1080p 5−6 9−10
The average gaming FPS of Radeon HD 8870M in Assassin's Creed Odyssey is 66% more, than GeForce 840A.

Full Specs

  GeForce 840A Radeon HD 8870M
Architecture Maxwell GCN
Code name GM108 Venus
Type Desktop Laptop
Release date 17 March 2014 18 December 2012
Pipelines 384 640
Core clock speed 1029 MHz 725 MHz
Boost Clock 1124 MHz 775 MHz
Transistor count 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 31.00
Floating-point performance 863.2 gflops 992.0 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2002 MHz 4500 MHz
Memory bandwidth 16.02 GB/s 72 GB/s
Shared memory -
DirectX 12 (11_0) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA 5.0
Bitcoin / BTC (SHA256) 107 Mh/s
Laptop size large
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