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Radeon HD 7970 vs Radeon RX 470


Intro

The Radeon HD 7970 has clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon RX 470, which makes use of a 14 nm design. AMD has set the core frequency at 926 MHz. The GDDR5 RAM works at a speed of 1650 MHz on this specific 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.

3DMark Fire Strike Graphics Score

Radeon RX 470 11810 points
Radeon HD 7970 8225 points
Difference: 3585 (44%)

Ethereum Mining Hash Rate

Radeon RX 470 26 Mh/s
Radeon HD 7970 21 Mh/s
Difference: 5 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon HD 7970 should perform much faster than the Radeon RX 470 overall. (explain)

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

Texel Rate

The Radeon RX 470 is a small bit (about 0%) better at texture filtering than the Radeon HD 7970. (explain)

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

Pixel Rate

The Radeon RX 470 should be just a bit (more or less 0%) more effective at anti-aliasing than the Radeon HD 7970, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 470 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

Radeon RX 470

Amazon.com

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
Manufacturer AMD AMD
Year January 2012 August 2016
Code Name Tahiti XT Polaris 10
Memory 3072 MB 8192 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 maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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

Display Prices

Hide Prices

Radeon HD 7970

Amazon.com

Radeon RX 470

Amazon.com

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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