P104 100 vs Radeon R9 M485X

When comparing P104 100 and Radeon R9 M485X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between P104 100 and Radeon R9 M485X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon R9 M485X is a Laptop Graphics Card

Note: Radeon R9 M485X 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 R9 M485X here:

Main Specs

  P104 100 Radeon R9 M485X
Power consumption (TDP) 250 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors 1x 8-pin None
Memory type GDDR5X GDDR5
Maximum RAM amount 4 GB 8 GB MB
Display Connectors No outputs No outputs
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  • P104 100 is connected by PCIe 3.0 x16, and Radeon R9 M485X uses MXM-B (3.0) interface.
  • Radeon R9 M485X has 4 GB more memory, than P104 100.
  • P104 100 is used in Desktops, and Radeon R9 M485X - in Laptops.
  • P104 100 is build with Pascal architecture, and Radeon R9 M485X - with GCN 3.
  • Core clock speed of P104 100 is 884 MHz higher, than Radeon R9 M485X.
  • P104 100 is manufactured by 16 nm process technology, and Radeon R9 M485X - by 28 nm process technology.
  • Memory clock speed of P104 100 is 5008 MHz higher, than Radeon R9 M485X.

Game benchmarks

high / 1080p 35−40 24−27
ultra / 1080p 21−24 14−16
QHD / 1440p 16−18 10−11
4K / 2160p 10−11 6−7
low / 720p 60−65 45−50
medium / 1080p 40−45 30−35
The average gaming FPS of P104 100 in Assassin's Creed Odyssey is 45% more, than Radeon R9 M485X.

Full Specs

  P104 100 Radeon R9 M485X
Architecture Pascal GCN 3
Code name GP104 Amethyst
Type Desktop Laptop
Release date 12 December 2017 14 May 2016
Pipelines 1920 2048
Core clock speed 1607 MHz 723 MHz
Boost Clock 1733 MHz
Transistor count 7,200 million 5,000 million
Manufacturing process technology 16 nm 28 nm
Texture fill rate 208.0 92.54
Floating-point performance 8,873 gflops 2,961 gflops
Length 267 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 10008 MHz 5000 MHz
Memory bandwidth 320.3 GB/s 160.0 GB/s
Shared memory -
DirectX 12 (12_1) 12 (12_0)
Shader Model 6.4 6.3
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.2.131 1.2.131
CUDA 6.1
Laptop size large
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