Radeon R9 M385 vs Radeon RX 550X

Find out if it is worth upgrading your current GPU setup by comparing Radeon R9 M385 and Radeon RX 550X. 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 Radeon R9 M385 and Radeon RX 550X. 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.

Radeon R9 M385 is a Laptop Graphics Card

Note: Radeon R9 M385 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 M385 here:

Main Specs

  Radeon R9 M385 Radeon RX 550X
Power consumption (TDP) 50 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 M385 is connected by PCIe 3.0 x16, and Radeon RX 550X uses PCIe 3.0 x8 interface.
  • Radeon R9 M385 and Radeon RX 550X have maximum RAM of 4 GB.
  • Radeon R9 M385 is used in Laptops, and Radeon RX 550X - in Desktops.
  • Radeon R9 M385 is build with GCN architecture, and Radeon RX 550X - with GCN 4.0.
  • Radeon R9 M385 is manufactured by 28 nm process technology, and Radeon RX 550X - by 14 nm process technology.
  • Memory clock speed of Radeon RX 550X is 4500 MHz higher, than Radeon R9 M385.

Game benchmarks

high / 1080p 10−12 10−11
ultra / 1080p 6−7 6−7
QHD / 1440p 1−2 0−1
low / 720p 24−27 21−24
medium / 1080p 12−14 12−14
The average gaming FPS of Radeon R9 M385 in Assassin's Creed Odyssey is 7% more, than Radeon RX 550X.

Full Specs

  Radeon R9 M385 Radeon RX 550X
Architecture GCN GCN 4.0
Code name Strato Lexa
Type Laptop Desktop
Release date 16 June 2015 16 December 2018
Pipelines 896 512
Core clock speed 1100 MHz
Boost Clock 1100 MHz 1183 MHz
Transistor count 2,080 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 56.00 37.86
Floating-point performance 1,792 gflops 1,211 gflops
Length 145 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 1500 MHz 6000 MHz
Memory bandwidth 76.8 GB/s 96 GB/s
Shared memory -
DirectX 12 (12_0)
Shader Model 6.3 6.4
OpenGL 4.4 4.6
OpenCL Not Listed 2.0
Vulkan 1.2.131
FreeSync +
Bus support PCIe 3.0
Laptop size medium sized
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
TrueAudio +
ZeroCore +
Switchable graphics +
Mantle +
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