Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon RX 490X 8GB Radeon R9 390X Gigabyte G1 Gaming 8GB Edition
Cyberpunk 2077 37% 11%
Assassins Creed: Valhalla 43% 1%
Call of Duty: Black Ops Cold War 44% 2%
Watch Dogs Legion 39% 7%
Godfall 2% 80%
FIFA 21 68% 44%
Microsoft Flight Simulator 44% 2%
Grand Theft Auto VI 12% 56%
World of Warcraft: Shadowlands 10% 59%
Genshin Impact 37% 11%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 490X 8GB are significantly better than the AMD Radeon R9 390X Gigabyte G1 Gaming 8GB Edition.

The R9 390X has a 60 MHz higher core clock speed than the RX 490X, but the RX 490X has 208 more Texture Mapping Units than the R9 390X. As a result, the RX 490X exhibits a 197.4 GTexel/s better Texture Fill Rate than the R9 390X. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The R9 390X has a 60 MHz higher core clock speed than the RX 490X, but the RX 490X has 64 more Render Output Units than the R9 390X. As a result, the RX 490X exhibits a 60.2 GPixel/s better Pixel Fill Rate than the R9 390X. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The RX 490X was released less than a year after the R9 390X, and so they are likely to have similar driver support for optimizing performance when running the latest games.

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 Radeon RX 490X 8GB and the Radeon R9 390X Gigabyte G1 Gaming 8GB Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The R9 390X has 384 GB/sec greater memory bandwidth than the RX 490X, which means that the memory performance of the R9 390X is massively better than the RX 490X.

The Radeon RX 490X 8GB has 6144 Shader Processing Units and the Radeon R9 390X Gigabyte G1 Gaming 8GB Edition has 2816. However, the actual shader performance of the R9 390X is 2537. The RX 490X having 3607 better shader performance is not particularly notable, as altogether the R9 390X performs better when taking into account other relevant data.

The RX 490X transistor size technology is 14 nm (nanometers) smaller than the R9 390X. This means that the RX 490X is expected to run slightly cooler and achieve higher clock frequencies than the R9 390X.

The Radeon RX 490X 8GB requires 250 Watts to run and the Radeon R9 390X Gigabyte G1 Gaming 8GB Edition requires 300 Watts. We would recommend a PSU with at least 600 Watts for the RX 490X and a PSU with at least 600 Watts for the R9 390X. The R9 390X requires 50 Watts more than the RX 490X to run. The difference is significant enough that the R9 390X may have a slight adverse affect on your yearly electricity bills in comparison to the RX 490X.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1000 MHzvs1060 MHz
Boost Clock-vs-
ArchitectureGCN 1.3 Polaris 10GCN 1.1 Grenada XT
OC Potential None vs Poor
Driver Support Great vs Great
Release Date01 Jun 2016vs18 Jun 2015
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
10
1600x900 - vs green tick
10
1920x1080
10
green tick vs green tick
10
2560x1440 - vs green tick
7.7
3840x2160 - vs green tick
5.9

GPU Memory

MemoryN/Avs8192 MB
Memory Speed500 MHzvs1500 MHz
Memory Bus-vs512 Bit
Memory Type-vsGDDR5
Memory Bandwidth-vs384GB/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%
Comparison

GPU Display

Shader Processing Units6144vs2816
Actual Shader Performance100%vs100%
Technology14nmvs28nm
Texture Mapping Units384vs176
Texture Rate384 GTexel/svs186.6 GTexel/s
Render Output Units128vs64
Pixel Rate128 GPixel/svs67.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections3vs-
Comparison

GPU Power Requirements

Max Power250 Wattsvs300 Watts
Recommended PSU600 Watts & 42 Ampsvs600 Watts & 42 Amps

GPU Features

DirectX12.1vs12.0
Shader Model-vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatednovsyes
Comparison

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 490X 8GB is an Upcoming High-End Graphics Card based on the Third Revision of the Graphics Core Next (GCN) Architecture.

Architecture
N/A.

GPU
N/A.

Memory
The GPU accesses a 8GB 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
N/A.

Performance
N/A.

System Suggestions
Radeon RX 490X 8GB is best suited for resolutions up to and including 3840x2160. We recommend a High-End Processor and 16GB of RAM for Optimal Performance.
Overview
Radeon R9 390X Gigabyte G1 Gaming 8GB Edition is a Special Edition of AMD's High-End Radeon R9 390X, created by Gigabyte.

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

Overclock: Memory Clock
None.

Frame Buffer
Untouched.

Cooling Solution
WINDFORCE 2X Cooling System: The airflow is spilt through the triangle design at the fan edge, and is guided smoothly through the fan by special 3D stripe curve design. At the same time, it effectively enhanced the cooling capacity while reducing air turbulence.

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