Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game Radeon RX 480X 4GB Radeon R9 390X PowerColor Devil 8GB Edition
Cyberpunk 2077 13% 10%
Hitman 3 13% 43%
Assassins Creed: Valhalla 21% 0%
The Medium 8% 37%
Resident Evil 8 13% 10%
FIFA 21 56% 45%
Call of Duty: Black Ops Cold War 23% 3%
Grand Theft Auto VI 22% 54%
Genshin Impact 13% 10%
Far Cry 6 26% 59%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 480X 4GB are noticeably better than the AMD Radeon R9 390X PowerColor Devil 8GB Edition.

The RX 480X has a 50 MHz higher core clock speed and 80 more Texture Mapping Units than the R9 390X. This results in the RX 480X providing 100.8 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The RX 480X has a 50 MHz higher core clock speed and 64 more Render Output Units than the R9 390X. This results in the RX 480X providing 76.8 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The RX 480X was released over a year more recently than the R9 390X, and so the RX 480X is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the R9 390X.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The R9 390X has 4096 MB more video memory than the RX 480X, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 390X also has superior memory performance overall.

The R9 390X has 390.4 GB/sec greater memory bandwidth than the RX 480X, which means that the memory performance of the R9 390X is massively better than the RX 480X.

The Radeon RX 480X 4GB has 4096 Shader Processing Units and the Radeon R9 390X PowerColor Devil 8GB Edition has 2816. However, the actual shader performance of the RX 480X is 5325 and the actual shader performance of the R9 390X is 2633. The RX 480X having 2692 better shader performance is not particularly notable, as altogether the R9 390X performs better when taking into account other relevant data.

The RX 480X transistor size technology is 14 nm (nanometers) smaller than the R9 390X. This means that the RX 480X is expected to run slightly cooler and achieve higher clock frequencies than the R9 390X.

The Radeon RX 480X 4GB requires 175 Watts to run and the Radeon R9 390X PowerColor Devil 8GB Edition requires 275 Watts. We would recommend a PSU with at least 500 Watts for the RX 480X and a PSU with at least 750 Watts for the R9 390X. The R9 390X requires 100 Watts more than the RX 480X to run. The difference is significant enough that the R9 390X may have an adverse affect on your yearly electricity bills in comparison to the RX 480X.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1150 MHzvs1100 MHz
Boost Clock1300 MHzvs-
ArchitectureGCN 1.3 Polaris 10GCN 1.1 Grenada XT
OC Potential None vs Poor
Driver Support Great vs Great
Release Date01 Nov 2016vs13 Aug 2015
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - vs green tick
1600x900 - vs green tick
green tick vs green tick
2560x1440 - vs green tick
3840x2160 - vs green tick

GPU Memory

MemoryN/Avs8192 MB
Memory Speed500 MHzvs1525 MHz
Memory Bus-vs512 Bit
Memory Type-vsGDDR5
Memory Bandwidth-vs390.4GB/sec
L2 Cache 4096 KB green tick vs 1024 KB
Delta Color Compression yes vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units4096vs2816
Actual Shader Performance100%vs100%
Texture Mapping Units256vs176
Texture Rate294.4 GTexel/svs193.6 GTexel/s
Render Output Units128vs64
Pixel Rate147.2 GPixel/svs70.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections3vs1

GPU Power Requirements

Max Power175 Wattsvs275 Watts
Recommended PSU500 Watts & 33 Ampsvs750 Watts & 50 Amps

GPU Features

Shader Model-vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended Processor-Intel Core i7-4790K 4-Core 4.0GHz
Recommended RAM-8 GB
Maximum Recommended Gaming Resolution-2560x1600

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon RX 480X 4GB is an Upcoming High-End Graphics Card based on the Third Revision of the Graphics Core Next (GCN) Architecture.



The GPU accesses a 4GB frame buffer of Second Generation HBM, through a 4096-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 500MHz.

Power Consumption


System Suggestions
Radeon RX 480X 4GB is best suited for resolutions up to and including 2560x1600. We recommend a High-End Processor and 8GB of RAM for Optimal Performance.
Radeon R9 390X PowerColor Devil 8GB Edition is a Special Edition of AMD's High-End Radeon R9 390X, created by PowerColor.

Overclock: Central Unit
The Central Unit is now of 1100MHz, instead of 1050MHz.

Overclock: Memory Clock
The Operating Memory Clock is now of 1525MHz, instead of 1500MHz.

Frame Buffer

Cooling Solution
Hybrid Cooling: Combine both air-cooling and watercooling to one perfect hybrid system to maintain higher over clock performance with lower temperature.

Benchmarks Indicate a 2% Performance Boost over the Reference Radeon R9 390X 8GB.
Recommended CPU
Possible GPU Upgrades
GPU Variants