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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 280X Crossfire Radeon HD 7970
Cyberpunk 2077 5% 64%
Hitman 3 36% 113%
Assassins Creed: Valhalla 4% 50%
Call of Duty: Black Ops Cold War 7% 45%
FIFA 21 47% 17%
Grand Theft Auto VI 47% 130%
Far Cry 6 52% 137%
Genshin Impact 5% 64%
World of Warcraft: Shadowlands 50% 135%
Battlefield 6 36% 113%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 280X Crossfire are significantly better than the AMD Radeon HD 7970.

The Radeon HD 7970 has a 75 MHz higher core clock speed than the R9 280X, but the R9 280X has 128 more Texture Mapping Units than the Radeon HD 7970. As a result, the R9 280X exhibits a 99.2 GTexel/s better Texture Fill Rate than the Radeon HD 7970. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Radeon HD 7970 has a 75 MHz higher core clock speed than the R9 280X, but the R9 280X has 32 more Render Output Units than the Radeon HD 7970. As a result, the R9 280X exhibits a 24.8 GPixel/s better Pixel Fill Rate than the Radeon HD 7970. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R9 280X was released over a year more recently than the Radeon HD 7970, and so the R9 280X is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the Radeon HD 7970.

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 280X has 3072 MB more video memory than the Radeon HD 7970, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 280X also has superior memory performance overall.

The R9 280X has 312 GB/sec greater memory bandwidth than the Radeon HD 7970, which means that the memory performance of the R9 280X is massively better than the Radeon HD 7970.

The Radeon R9 280X Crossfire has 4096 Shader Processing Units and the Radeon HD 7970 has 2048. However, the actual shader performance of the Radeon HD 7970 is 1610. The R9 280X having 2486 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 280X delivers a massively smoother and more efficient experience when processing graphical data than the Radeon HD 7970.

The Radeon R9 280X Crossfire requires 550 Watts to run and the Radeon HD 7970 requires 250 Watts. We would recommend a PSU with at least 1000 Watts for the R9 280X and a PSU with at least 600 Watts for the Radeon HD 7970. The R9 280X requires 300 Watts more than the Radeon HD 7970 to run. The difference is significant enough that the R9 280X may have an adverse affect on your yearly electricity bills in comparison to the Radeon HD 7970.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed850 MHzvs925 MHz
Boost Clock1000 MHzvs-
ArchitectureGCN 1.1 Tahiti XTL (x2)GCN 1.0 Tahiti XT
OC Potential Fair vs Good
Driver Support - vs Good
Release Date01 Oct 2013vs29 Dec 2011
GPU LinkGD LinkGD Link

Resolution Performance

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

GPU Memory

Memory6144 MBvs3072 MB
Memory Speed1500 MHzvs1375 MHz
Memory Bus768 Bitvs384 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth576GB/secvs264GB/sec
L2 Cache 1536 KB green tick vs 768 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units4096vs2048
Actual Shader Performance100%vs77%
Texture Mapping Units256vs128
Texture Rate217.6 GTexel/svs118.4 GTexel/s
Render Output Units64vs32
Pixel Rate54.4 GPixel/svs29.6 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections0vs1
HDMI Connections0vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power550 Wattsvs250 Watts
Recommended PSU1000 Watts & 42 Ampsvs600 Watts & 42 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.3vs4.4
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-3770K 4-Core 3.5GHzvsIntel Core i5-2500K 3.3GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R9 280X Crossfire is a solution of two Radeon R9 280X put together using AMD'S Crossfire technology.
Check the page of Radeon R9 280X 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 up to 60% better than a single Radeon R9 280X performing by itself but at times (depending whether or not the 3D game supports crossfire or in the graphics driver) it performed worse than a single Radeon R9 280X. Expect this combination to draw up to 550 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Radeon HD 7970 is a High-End Graphics Card based on the Graphics Core Next (GCN) Architecture.

The GCN Architecture succeeds the 40nm Terascale Architecture. In addition to being produced with a 28nm Technology, the GCN Architecture adds other Technologies that allow for energy efficiency. For example, ZeroCore Power, a long idle power saving technology, allows the Graphics Cards to shut down by itself when the Monitor is turned off.
GCN also adds Improved Anisotropic Filtering, DirectX 11 Tessellation and the Partially Resident Textures (PRT) Technology, which enables future games to utilize ultra-high resolution textures with the same performance as today's small and often repetitive textures.

It equips a GPU Codenamed Tahiti XT which has 32 Compute Units activated and thus offers 2048 Shader Processing Units, 128 TMUs and 32 ROPs. The Central Unit is clocked at 925MHz.

The GPU accesses a 3GB frame buffer of fast GDDR5, through a 384-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 1375MHz.

Power Consumption
With a rated board TDP of 275W, it requires at least a 600W PSU with one available 6-pin and one available 8-pin connectors.

Radeon HD 7950 used to compete with GeForce GTX 680 but its performance was even behind the lower positioned GeForce GTX 670 and was later replaced by a faster Radeon HD 7970 GHz Edition.

System Suggestions
Radeon HD 7970 is best suited for resolutions up to and including 1920x1080. We recommend a Strong Processor (Intel Core i5 Quad Core/AMD FX Six Core) and 8GB of RAM for Optimal Performance.
Recommended CPU
Possible GPU Upgrades
GPU Variants