Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 390 Crossfire Radeon HD 7950 3-way Crossfire
Red Dead Redemption 2 22% 10%
Cyberpunk 2077 7% 24%
Dragon Ball Z Kakarot 52% 45%
Microsoft Flight Simulator 7% 24%
Call of Duty: Modern Warfare 22% 10%
Doom Eternal 33% 23%
FIFA 20 58% 52%
Grand Theft Auto VI 19% 37%
Need For Speed Heat 22% 10%
Halo: Reach 75% 71%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 390 Crossfire are very slightly better than the AMD Radeon HD 7950 3-way Crossfire.

The R9 390 has a 200 MHz higher core clock speed but 16 fewer Texture Mapping Units than the HD 7950. The lower TMU count doesn't matter, though, as altogether the R9 390 manages to provide 51.2 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 390 has a 200 MHz higher core clock speed and 32 more Render Output Units than the HD 7950. This results in the R9 390 providing 51.2 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 R9 390 was released over three years more recently than the HD 7950, and so the R9 390 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 7950 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 R9 390 has 7168 MB more video memory than the HD 7950, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 390 also has superior memory performance overall.

The R9 390 has 48 GB/sec greater memory bandwidth than the HD 7950, which means that the memory performance of the R9 390 is noticeably better than the HD 7950.

The Radeon R9 390 Crossfire has 5120 Shader Processing Units and the Radeon HD 7950 3-way Crossfire has 5376. However, the actual shader performance of the R9 390 is 4352 and the actual shader performance of the HD 7950 is 3656. The R9 390 having 696 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 390 delivers a massively smoother and more efficient experience when processing graphical data than the HD 7950.

The Radeon R9 390 Crossfire requires 550 Watts to run and the Radeon HD 7950 3-way Crossfire requires 540 Watts. We would recommend a PSU with at least 850 Watts for the R9 390. The R9 390 requires 10 Watts more than the HD 7950 to run. The difference is not significant enough for the R9 390 to have a noticeably larger impact on your yearly electricity bills than the HD 7950.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1000 MHzvs800 MHz
Boost Clock-vs-
ArchitectureGCN 1.1 Grenada PRO (x2)GCN 1.0 Tahiti PRO (x3)
OC Potential Poor vs Fair
Driver Support Great vs Good
Release Date18 Jun 2015vs01 Jan 2012
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

Memory16384 MBvs9216 MB
Memory Speed1500 MHzvs1250 MHz
Memory Bus1024 Bitvs1152 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth768GB/secvs720GB/sec
L2 Cache 2048 KB vs green tick 2304 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units5120vs5376
Actual Shader Performance100%vs100%
Texture Mapping Units320vs336
Texture Rate320 GTexel/svs268.8 GTexel/s
Render Output Units128vs96
Pixel Rate128 GPixel/svs76.8 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs3
HDMI Connections1vs3
DisplayPort Connections1vs-

GPU Power Requirements

Max Power550 Wattsvs540 Watts
Recommended PSU850 Watts & 50 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 i5-3570K 3.4GHz
Recommended RAM16 GBvs8 GB
Maximum Recommended Gaming Resolution3840x2160vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R9 390 Crossfire is a solution of two Radeon R9 390 put together using AMD's Crossfire Technology.

Radeon R9 390 Features a GPU Codenamed Grenada PRO which is a Second Gen GCN GPU and is identical to the Hawaii PRO GPU used on the older Radeon R9 290.

Grenada PRO has 40 Compute Units Unlocked and offers 2560 Shader Processing Units, 160 TMUs and 64 ROPs.

The Central Unit runs at 1000MHz.

Memory: Speed
Each GPU is equipped with fast GDDR5 and Accesses the Frame Buffer through a 512-bit Memory Interface. The Memory Clock Operates at 1500MHz.

Memory: Frame Buffer
The GPU can fill up a Memory Pool of up to 8GB. Under most circumstances, this only proves useful in certain 3D Games whose Settings Require Large Amounts of Memory.
However, because the GPU itself is too weak to work under other circumstances in which 8GB of Memory are needed - such as 4K Gaming, a Large Frame Buffer is mostly a Gimmick.

Power Consumption
Power Consumption is around 550W.

Performance is Sufficient for Detailed Gaming at 4K.

System Suggestions
We recommend a High-End Processor and 16GB of RAM for Optimal Performance.
Radeon HD 7950 3-way Crossfire is a solution of three Radeon HD 7950 put together using AMD'S Crossfire technology.
Check the page of Radeon HD 7950 to know more about its chip.
Crossfire relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is somewhat superior to a single Radeon HD 7990 performing by itself it might be worse (depending on whether or not the 3D game supports crossfire or in the graphics driver) than a single Radeon HD 7950. Expect this combination to draw up to 540 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Recommended CPU
Possible GPU Upgrades
GPU Variants