Radeon R9 270X vs Radeon R9 M390

When comparing Radeon R9 270X and Radeon R9 M390, 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 Radeon R9 270X and Radeon R9 M390 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon R9 M390 is a Laptop Graphics Card

Note: Radeon R9 M390 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 M390 here:

Main Specs

  Radeon R9 270X Radeon R9 M390
Power consumption (TDP) 180 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 2 x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 270X and Radeon R9 M390 have maximum RAM of 2 GB.
  • Radeon R9 270X is used in Desktops, and Radeon R9 M390 - in Laptops.
  • Radeon R9 270X and Radeon R9 M390 are build with GCN architecture.
  • Radeon R9 270X and Radeon R9 M390 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 24−27 18−20
ultra / 1080p 14−16 10−11
QHD / 1440p 10−11 5−6
4K / 2160p 6−7 4−5
low / 720p 45−50 35−40
medium / 1080p 30−35 21−24
The average gaming FPS of Radeon R9 270X in Assassin's Creed Odyssey is 37% more, than Radeon R9 M390.

Full Specs

  Radeon R9 270X Radeon R9 M390
Architecture GCN GCN
Code name Curacao XT Pitcairn
Type Desktop Laptop
Release date 8 October 2013 9 June 2015
Pipelines 1280 1024
Boost Clock 1050 MHz
Transistor count 2,800 million 5000 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 84.00
Floating-point performance 2,688 gflops
Memory bus width 256 Bit 256 Bit
Memory bandwidth 179.2 GB/s
Shared memory - -
Shader Model 5.1
OpenGL 4.6 4.4
OpenCL 1.2 Not Listed
Vulkan +
FreeSync + +
Bus support PCIe 3.0 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 318 Mh/s 242 Mh/s
Laptop size large
Eyefinity + +
HD3D + +
PowerTune +
DualGraphics +
TrueAudio +
ZeroCore +
Switchable graphics +
Mantle +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 30 Mh/s
Zcash / ZEC (Equihash) 163 Sol/s
AppAcceleration +
LiquidVR +
TressFX +
UVD +
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