Radeon R9 390X vs Radeon RX 480 mobile

Find out if it is worth upgrading your current GPU setup by comparing Radeon R9 390X and Radeon RX 480 mobile. 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 390X and Radeon RX 480 mobile. 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 RX 480 mobile is a Laptop Graphics Card

Note: Radeon RX 480 mobile 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 RX 480 mobile here:

Main Specs

  Radeon R9 390X Radeon RX 480 mobile
Power consumption (TDP) 275 Watt 100 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 8 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Radeon R9 390X has 175% more power consumption, than Radeon RX 480 mobile.
  • Radeon R9 390X is connected by PCIe 3.0 x16, and Radeon RX 480 mobile uses MXM-B (3.0) interface.
  • Radeon R9 390X is used in Desktops, and Radeon RX 480 mobile - in Laptops.
  • Radeon R9 390X is build with GCN architecture, and Radeon RX 480 mobile - with Polaris.
  • Radeon R9 390X is manufactured by 28 nm process technology, and Radeon RX 480 mobile - by 14 nm process technology.
  • Memory clock speed of Radeon RX 480 mobile is 6950 MHz higher, than Radeon R9 390X.

Game benchmarks

high / 1080p 50−55 12−14
ultra / 1080p 30−35 7−8
QHD / 1440p 24−27 0−1
4K / 2160p 14−16
low / 720p 75−80 27−30
medium / 1080p 55−60 14−16
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 243% more, than Radeon RX 480 mobile.

Full Specs

  Radeon R9 390X Radeon RX 480 mobile
Architecture GCN Polaris
Code name Grenada XT Polaris
Type Desktop Laptop
Release date 16 June 2015 1 August 2016
Pipelines 2816 2304
Boost Clock 1050 MHz 1077 MHz
Transistor count 6,200 million 5,700 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 184.8 155.1
Floating-point performance 5,914 gflops 4,963 gflops
Length 275 mm
Memory bus width 512 Bit 256 Bit
Memory clock speed 1050 MHz 8000 MHz
Memory bandwidth 384 GB/s 256.0 GB/s
Shared memory - -
DirectX 12 (12_0)
Shader Model 6.3 6.4
OpenGL 4.6 4.6
OpenCL 2.0 2.0
Vulkan + 1.2.131
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 684 Mh/s
Laptop size large
Eyefinity +
PowerTune +
TrueAudio +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 27.5 Mh/s
High bandwidth memory (HBM) -
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