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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 390X Gigabyte G1 Gaming 8GB Edition Radeon R9 390X
Cyberpunk 2077 11% 4%
Assassins Creed: Valhalla 1% 5%
Call of Duty: Black Ops Cold War 2% 8%
FIFA 21 44% 48%
Microsoft Flight Simulator 2% 8%
Watch Dogs Legion 7% 0%
World of Warcraft: Shadowlands 59% 49%
Grand Theft Auto VI 56% 46%
Horizon: Zero Dawn 5% 2%
Genshin Impact 11% 4%

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

The R9 390X has a 10 MHz higher core clock speed and the same number of Texture Mapping Units as the Radeon R9 390X. This results in the R9 390X providing 1.8 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 R9 390X has a 10 MHz higher core clock speed than the Radeon R9 390X and the same number of Render Output Units. This results in the R9 390X providing 0.59999999999999 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

Both the Radeon R9 390X Gigabyte G1 Gaming 8GB Edition and the Radeon R9 390X were released at the same time, so are likely to be quite similar.

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

The memory bandwidth of the Radeon R9 390X Gigabyte G1 Gaming 8GB Edition and the Radeon R9 390X are the same, which means the R9 390X and the Radeon R9 390X have equal limitations when it comes to graphical data transfer.

Both the Radeon R9 390X Gigabyte G1 Gaming 8GB Edition and the Radeon R9 390X have 2816 Shader Processing Units. Having the same number of SPUs and using the same architecture means that the performance they offer can be compared by looking at the memory bandwidth, Texture and Pixel Rates. In this case, the R9 390X has 1.8 GTexel/s better Texture Fill Rate and 0.59999999999999 GPixel/s better Pixel Fill Rate, but the has GB/sec greater memory bandwidth. Although the GPUs are very similar in performance, the Radeon R9 390X takes the edge.

The Radeon R9 390X Gigabyte G1 Gaming 8GB Edition requires 300 Watts to run and the Radeon R9 390X requires 275 Watts. We would recommend a PSU with at least 600 Watts for the R9 390X and a PSU with at least 600 Watts for the Radeon R9 390X. The R9 390X requires 25 Watts more than the Radeon R9 390X to run. The difference is not significant enough for the R9 390X to have a noticeably larger impact on your yearly electricity bills than the Radeon R9 390X.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1060 MHzvs1050 MHz
Boost Clock-vs-
ArchitectureGCN 1.1 Grenada XTGCN 1.1 Grenada XT
OC Potential Poor vs Poor
Driver Support Great vs Great
Release Date18 Jun 2015vs18 Jun 2015
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs green tick
green tick vs green tick
green tick vs green tick
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vs green tick

GPU Memory

Memory8192 MBvs8192 MB
Memory Speed1500 MHzvs1500 MHz
Memory Bus512 Bitvs512 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth384GB/secvs384GB/sec
L2 Cache 1024 KB green tick vs green tick 1024 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units2816vs2816
Actual Shader Performance100%vs100%
Texture Mapping Units176vs176
Texture Rate186.6 GTexel/svs184.8 GTexel/s
Render Output Units64vs64
Pixel Rate67.8 GPixel/svs67.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections-vs0

GPU Power Requirements

Max Power300 Wattsvs275 Watts
Recommended PSU600 Watts & 42 Ampsvs600 Watts & 42 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.4vs4.4
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-4790K 4-Core 4.0GHzvsIntel Core i7-4790K 4-Core 4.0GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution2560x1600vs2560x1600

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
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

Frame Buffer

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.

Benchmarks Indicate no Performance Boost over the Reference Radeon R9 390X 8GB.
Radeon R9 390X is a High-End Graphics Card based on the First Revision of the Graphics Core Next (GCN) Architecture.

The GCN 1.1 revision of the Graphics Core Next Architecture adds new important technologies and is largely oriented for energy efficiency. New technologies such as PowerTune and TrueAudio are the biggest additions as well as DirectX 11.2 support.

It equips a GPU Codenamed Grenada XT which has 44 Compute Units activated and thus offers 2816 Shader Processing Units, 176 TMUs and 64 ROPs. The Central Unit is clocked at 1050MHz.

The GPU accesses a 8GB frame buffer of fast GDDR5, through a 512-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 1500MHz.

Power Consumption
With a rated board TDP of 290W, it requires at least a 750W PSU with one available 6-pin and one available 8-pin connectors.

Radeon R9 390X competes with GeForce GTX 980 and is essentially a Higher Clocked Radeon R9 290X with the addition of twice as much video memory (8GB against 4GB).
Its Performance lies somewhere between GeForce GTX 970 and GeForce GTX 980, as does its price.
However, the lack of DirectX 12.1 Support paired with the enormous Power Consumption (almost twice as much as GeForce GTX 980) and the Gimmicked 8GB Frame Buffer, makes it an extremely uncompetitive product.
Still, Radeon R9 390X 8GB is around $120 cheaper than GeForce GTX 980 and performs reasonably better at 4K, though it is still best suited for 2560x1600.

System Suggestions
Radeon R9 390X is best suited for resolutions up to and including 2560x1600. We recommend a Very Strong Processor and 8GB of RAM for Optimal Performance.
Recommended CPU
Possible GPU Upgrades
GPU Variants