Radeon R9 380 vs Radeon R9 M390X

When choosing between Radeon R9 380 and Radeon R9 M390X, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon R9 380 and Radeon R9 M390X.

Radeon R9 M390X is a Laptop Graphics Card

Note: Radeon R9 M390X 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 M390X here:

Main Specs

  Radeon R9 380 Radeon R9 M390X
Power consumption (TDP) 190 Watt 100 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 2 x 6-pin None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Radeon R9 380 has 90% more power consumption, than Radeon R9 M390X.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon R9 380 and Radeon R9 M390X have maximum RAM of 4 GB.
  • Radeon R9 380 is used in Desktops, and Radeon R9 M390X - in Laptops.
  • Radeon R9 380 is build with GCN architecture, and Radeon R9 M390X - with GCN 3.
  • Radeon R9 380 and Radeon R9 M390X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 35−40 21−24
ultra / 1080p 21−24 12−14
QHD / 1440p 16−18 8−9
4K / 2160p 10−11 5−6
low / 720p 60−65 40−45
medium / 1080p 40−45 27−30
The average gaming FPS of Radeon R9 380 in Assassin's Creed Odyssey is 60% more, than Radeon R9 M390X.

Full Specs

  Radeon R9 380 Radeon R9 M390X
Architecture GCN GCN 3
Code name Tonga Pro Amethyst (XT) / Tonga
Type Desktop Laptop
Release date 26 June 2015 9 June 2015
Pipelines 1792 2048
Core clock speed 723 MHz
Boost Clock 970 MHz
Transistor count 5,000 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 108.6 92.54
Floating-point performance 3,476 gflops 2,961 gflops
Length 221 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 970 MHz
Memory bandwidth 182.4 GB/s 160.0 GB/s
Shared memory - -
Shader Model 6.3 6.3
OpenGL 4.5 4.4
OpenCL 2.0 Not Listed
Vulkan + +
Monero / XMR (CryptoNight) 0.48 kh/s
FreeSync + +
Bus support PCIe 3.0 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 404 Mh/s
Laptop size large
Eyefinity + +
HD3D + +
PowerTune + +
DualGraphics +
TrueAudio +
ZeroCore + +
Switchable graphics +
Mantle + +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Decred / DCR (Decred) 0.66 Gh/s
Ethereum / ETH (DaggerHashimoto) 18 Mh/s
Zcash / ZEC (Equihash) 168.45 Sol/s
Compute units 28
Form factor full height / full length / dual slot
High bandwidth memory (HBM) -
LiquidVR +
FRTC +
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