P104 100 vs Radeon R9 M385X

In this comparison between P104 100 and Radeon R9 M385X 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 P104 100 will be the best choice, for others Radeon R9 M385X will be their preference. Study the comparison tables below and make your choice.

Radeon R9 M385X is a Laptop Graphics Card

Note: Radeon R9 M385X 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 M385X here:

Main Specs

  P104 100 Radeon R9 M385X
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 8-pin
Memory type GDDR5X GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs No outputs
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  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • P104 100 and Radeon R9 M385X have maximum RAM of 4 GB.
  • P104 100 is used in Desktops, and Radeon R9 M385X - in Laptops.
  • P104 100 is build with Pascal architecture, and Radeon R9 M385X - with GCN.
  • Core clock speed of P104 100 is 507 MHz higher, than Radeon R9 M385X.
  • P104 100 is manufactured by 16 nm process technology, and Radeon R9 M385X - by 28 nm process technology.
  • Memory clock speed of P104 100 is 8508 MHz higher, than Radeon R9 M385X.

Game benchmarks

high / 1080p 35−40 8−9
ultra / 1080p 21−24 5−6
QHD / 1440p 16−18 0−1
4K / 2160p 10−11
low / 720p 60−65 18−20
medium / 1080p 40−45 10−11
The average gaming FPS of P104 100 in Assassin's Creed Odyssey is 310% more, than Radeon R9 M385X.

Full Specs

  P104 100 Radeon R9 M385X
Architecture Pascal GCN
Code name GP104 Strato-XT-M3
Type Desktop Laptop
Release date 12 December 2017 16 June 2015
Pipelines 1920 896
Core clock speed 1607 MHz 1100 MHz
Boost Clock 1733 MHz 1100 MHz
Transistor count 7,200 million 2,080 million
Manufacturing process technology 16 nm 28 nm
Texture fill rate 208.0 61.60
Floating-point performance 8,873 gflops 1,971 gflops
Length 267 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 10008 MHz 1500 MHz
Memory bandwidth 320.3 GB/s 76.8 GB/s
Shared memory -
DirectX 12 (12_1)
Shader Model 6.4 6.3
OpenGL 4.6 4.4
OpenCL 1.2 Not Listed
Vulkan 1.2.131
CUDA 6.1
FreeSync +
Bus support PCIe 3.0
Laptop size large
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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