Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 390X Sapphire Nitro w/ Back Plate 8GB Edition Radeon RX 480X 4GB
Cyberpunk 2077 44% 13%
Minecraft: Dungeons 11% 13%
Call of Duty Warzone 5% 18%
Grand Theft Auto VI 60% 26%
Assassins Creed: Valhalla 44% 13%
Valorant 90% 92%
Maneater 10% 29%
Phantasy Star Online 2 85% 88%
Doom Eternal 7% 16%
Mount and Blade 2: Bannerlord 1% 21%

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 Sapphire Nitro w/ Back Plate 8GB Edition.

The RX 480X has a 90 MHz higher core clock speed and 80 more Texture Mapping Units than the R9 390X. This results in the RX 480X providing 107.8 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 90 MHz higher core clock speed and 64 more Render Output Units than the R9 390X. This results in the RX 480X providing 79.4 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 384 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 R9 390X Sapphire Nitro w/ Back Plate 8GB Edition has 2816 Shader Processing Units and the Radeon RX 480X 4GB has 4096. However, the actual shader performance of the R9 390X is 2537 and the actual shader performance of the RX 480X is 5325. The RX 480X having 2788 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 R9 390X Sapphire Nitro w/ Back Plate 8GB Edition requires 375 Watts to run and the Radeon RX 480X 4GB requires 175 Watts. We would recommend a PSU with at least 750 Watts for the R9 390X and a PSU with at least 500 Watts for the RX 480X. The R9 390X requires 200 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 Speed1060 MHzvs1150 MHz
Boost Clock-vs1300 MHz
ArchitectureGCN 1.1 Grenada XTGCN 1.3 Polaris 10
OC Potential Poor vs None
Driver Support Great vs Great
Release Date18 Jun 2015vs01 Nov 2016
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
green tick vs -
green tick vs green tick
green tick vs -
green tick vs -

GPU Memory

Memory8192 MBvsN/A
Memory Speed1500 MHzvs500 MHz
Memory Bus512 Bitvs-
Memory TypeGDDR5vs-
Memory Bandwidth384GB/secvs-
L2 Cache 1024 KB vs green tick 4096 KB
Delta Color Compression no vs yes
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units2816vs4096
Actual Shader Performance100%vs100%
Texture Mapping Units176vs256
Texture Rate186.6 GTexel/svs294.4 GTexel/s
Render Output Units64vs128
Pixel Rate67.8 GPixel/svs147.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections1vs2
HDMI Connections1vs1
DisplayPort Connections3vs3

GPU Power Requirements

Max Power375 Wattsvs175 Watts
Recommended PSU750 Watts & 50 Ampsvs500 Watts & 33 Amps

GPU Features

Shader Model5.0vs-
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-4790K 4-Core 4.0GHz-
Recommended RAM8 GB-
Maximum Recommended Gaming Resolution2560x1600-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R9 390X Sapphire Nitro w/ Back Plate 8GB Edition is a Special Edition of AMD's High-End Radeon R9 390X, created by Sapphire.

Overclock: Central Unit
The Central Unit is now of 1060MHz, instead of 1050MHz.

Overclock: Memory Clock

Frame Buffer

Cooling Solution
Tri-X cooler Features dual ball bearings in each of the three fans for higher reliability and enhanced Intelligent Fan Control (IFC-II) which turns off the fans for silent operation under light load.

Benchmarks Indicate no Significant Performance Boost over the Reference Radeon R9 390X 8GB.
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.
Recommended CPU
Possible GPU Upgrades
GPU Variants