GeForce GTX 870M vs Radeon R9 M485X

If you are going to buy a new graphics card and are choosing between GeForce GTX 870M and Radeon R9 M485X, 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 GTX 870M stacks up against Radeon R9 M485X, check out specs charts below.

GeForce GTX 870M and Radeon R9 M485X are Laptop Graphics Cards

Note: GeForce GTX 870M and Radeon R9 M485X 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 GTX 870M or Radeon R9 M485X here:

Main Specs

  GeForce GTX 870M Radeon R9 M485X
Power consumption (TDP) 100 Watt 250 Watt
Interface MXM-B (3.0) MXM-B (3.0)
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 6 GB 8 GB MB
Display Connectors No outputs No outputs
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  • Radeon R9 M485X has 150% more power consumption, than GeForce GTX 870M.
  • Both video cards are using MXM-B (3.0) interface connection to a motherboard.
  • Radeon R9 M485X has 2 GB more memory, than GeForce GTX 870M.
  • Both cards are used in Laptops.
  • GeForce GTX 870M is build with Kepler architecture, and Radeon R9 M485X - with GCN 3.
  • Core clock speed of GeForce GTX 870M is 218 MHz higher, than Radeon R9 M485X.
  • GeForce GTX 870M and Radeon R9 M485X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 16−18 24−27
ultra / 1080p 10−11 14−16
QHD / 1440p 4−5 10−11
4K / 2160p 6−7
low / 720p 35−40 45−50
medium / 1080p 21−24 30−35
The average gaming FPS of Radeon R9 M485X in Assassin's Creed Odyssey is 44% more, than GeForce GTX 870M.

Full Specs

  GeForce GTX 870M Radeon R9 M485X
Architecture Kepler GCN 3
Code name N15P-GT Amethyst
Type Laptop Laptop
Release date 12 March 2014 14 May 2016
Pipelines 1344 2048
Core clock speed 941 MHz 723 MHz
Boost Clock 967 MHz
Transistor count 3,540 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 108.3 92.54
Floating-point performance 2,599 gflops 2,961 gflops
Memory bus width 192 Bit 256 Bit
Memory clock speed 5000 MHz
Memory bandwidth 120.0 GB/s 160.0 GB/s
Shared memory - -
DirectX 12 (11_0) 12 (12_0)
Shader Model 5.1 6.3
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan 1.1.126 1.2.131
CUDA +
CUDA cores 1344
Bus support PCI Express 2.0, PCI Express 3.0
SLI options +
HDMI +
Bitcoin / BTC (SHA256) 82 Mh/s
Laptop size large large
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus +
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