Radeon R9 390X vs Radeon RX 580

When choosing between Radeon R9 390X and Radeon RX 580, 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 390X and Radeon RX 580.

Main Specs

  Radeon R9 390X Radeon RX 580
Power consumption (TDP) 275 Watt 185 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin, 1 x 8-pin 1x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 8 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 1x HDMI, 3x DisplayPort
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  • Radeon R9 390X has 48% more power consumption, than Radeon RX 580.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Both cards are used in Desktops.
  • Radeon R9 390X is build with GCN architecture, and Radeon RX 580 - with Polaris.
  • Radeon R9 390X is manufactured by 28 nm process technology, and Radeon RX 580 - by 14 nm process technology.
  • Radeon R9 390X is 34 mm longer, than Radeon RX 580.
  • Memory clock speed of Radeon RX 580 is 6950 MHz higher, than Radeon R9 390X.

Game benchmarks

high / 1080p 50−55 45−50
ultra / 1080p 30−35 30−33
QHD / 1440p 24−27 24−27
4K / 2160p 14−16 12−14
low / 720p 75−80 70−75
medium / 1080p 55−60 50−55
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 7% more, than Radeon RX 580.

Full Specs

  Radeon R9 390X Radeon RX 580
Architecture GCN Polaris
Code name Grenada XT Polaris 20
Type Desktop Desktop
Release date 16 June 2015 18 April 2017
Pipelines 2816 2304
Core clock speed 1257 MHz
Boost Clock 1050 MHz 1340 MHz
Transistor count 6,200 million 5,700 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 184.8 193.0
Floating-point performance 5,914 gflops 6,175 gflops
Length 275 mm 241 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
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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