Radeon R9 290X vs Radeon R9 M390X

Find out if it is worth upgrading your current GPU setup by comparing Radeon R9 290X and Radeon R9 M390X. 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 290X and Radeon R9 M390X. 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 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 290X Radeon R9 M390X
Power consumption (TDP) 250 Watt 100 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin + 1 x 8-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 290X has 150% more power consumption, than Radeon R9 M390X.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon R9 290X and Radeon R9 M390X have maximum RAM of 4 GB.
  • Radeon R9 290X is used in Desktops, and Radeon R9 M390X - in Laptops.
  • Radeon R9 290X is build with GCN architecture, and Radeon R9 M390X - with GCN 3.
  • Radeon R9 290X and Radeon R9 M390X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 35−40 21−24
ultra / 1080p 24−27 12−14
QHD / 1440p 18−20 8−9
4K / 2160p 10−11 5−6
low / 720p 60−65 40−45
medium / 1080p 45−50 27−30
The average gaming FPS of Radeon R9 290X in Assassin's Creed Odyssey is 65% more, than Radeon R9 M390X.

Full Specs

  Radeon R9 290X Radeon R9 M390X
Architecture GCN GCN 3
Code name Hawaii XT Amethyst (XT) / Tonga
Type Desktop Laptop
Release date 24 October 2013 9 June 2015
Pipelines 2816 2048
Core clock speed 723 MHz
Boost Clock 947 MHz
Transistor count 6,200 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 176.0 92.54
Floating-point performance 5,632 gflops 2,961 gflops
Length 275 mm
Memory bus width 512 Bit 256 Bit
Memory clock speed 1250 MHz
Memory bandwidth 320 GB/s 160.0 GB/s
Shared memory - -
Shader Model 6.3 6.3
OpenGL 4.6 4.4
OpenCL 2.0 Not Listed
Vulkan + +
Monero / XMR (CryptoNight) 0.76 kh/s
FreeSync + +
Bus support PCIe 3.0 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 623 Mh/s
Laptop size large
Eyefinity + +
HD3D + +
PowerTune +
DualGraphics +
TrueAudio +
ZeroCore +
Switchable graphics +
Mantle +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Decred / DCR (Decred) 1.07 Gh/s
Ethereum / ETH (DaggerHashimoto) 25.75 Mh/s
Zcash / ZEC (Equihash) 350 Sol/s
AppAcceleration +
LiquidVR +
TressFX +
UVD +
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