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Radeon HD 7970 vs Radeon RX 470 4GB

Intro

The Radeon HD 7970 uses a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 memory runs at a frequency of 1375 MHz on this specific model. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Compare all of that to the Radeon RX 470 4GB, which uses a 14 nm design. AMD has clocked the core frequency at 926 MHz. The GDDR5 memory runs at a speed of 1650 MHz on this particular card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

Ethereum Mining Hash Rate

Radeon RX 470 4GB 27 Mh/s
Radeon HD 7970 21 Mh/s
Difference: 6 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB 120 Watts
Radeon HD 7970 250 Watts
Difference: 130 Watts (108%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should be much faster than the Radeon RX 470 4GB in general. (explain)

Radeon HD 7970 264000 MB/sec
Radeon RX 470 4GB 211200 MB/sec
Difference: 52800 (25%)

Texel Rate

The Radeon RX 470 4GB should be a little bit (about 0%) better at AF than the Radeon HD 7970. (explain)

Radeon RX 470 4GB 118528 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 128 (0%)

Pixel Rate

The Radeon RX 470 4GB is a bit (about 0%) more effective at anti-aliasing than the Radeon HD 7970, and also should be capable of handling higher resolutions better. (explain)

Radeon RX 470 4GB 29632 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 32 (0%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon HD 7970

Amazon.com

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Radeon RX 470 4GB

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 7970 Radeon RX 470 4GB
Manufacturer AMD AMD
Year January 2012 August 2016
Code Name Tahiti XT Polaris 10
Memory 3072 MB 4096 MB
Core Speed 925 MHz 926 MHz
Memory Speed 5500 MHz 6600 MHz
Power (Max TDP) 250 watts 120 watts
Bandwidth 264000 MB/sec 211200 MB/sec
Texel Rate 118400 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 2048 2048
Texture Mapping Units 128 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 470 4GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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