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Radeon HD 7970 vs Radeon RX 570

Intro

The Radeon HD 7970 uses a 28 nm design. AMD has clocked the core frequency at 925 MHz. The GDDR5 RAM works at a frequency of 1375 MHz on this specific card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Compare those specs to the Radeon RX 570, which features GPU clock speed of 1168 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 256-bit bus. It also features 2048 Stream Processors, 128 Texture Address Units, and 32 Raster Operation 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 570 12108 points
Radeon HD 7970 8225 points
Difference: 3883 (47%)

Ethereum Mining Hash Rate

Radeon RX 570 26 Mh/s
Radeon HD 7970 21 Mh/s
Difference: 5 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570 150 Watts
Radeon HD 7970 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should be a small bit faster than the Radeon RX 570 in general. (explain)

Radeon HD 7970 264000 MB/sec
Radeon RX 570 229376 MB/sec
Difference: 34624 (15%)

Texel Rate

The Radeon RX 570 is a lot (more or less 26%) more effective at anisotropic filtering than the Radeon HD 7970. (explain)

Radeon RX 570 149504 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 31104 (26%)

Pixel Rate

The Radeon RX 570 should be quite a bit (about 26%) faster with regards to FSAA than the Radeon HD 7970, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 570 37376 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 7776 (26%)

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 570

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 570
Manufacturer AMD AMD
Year January 2012 April 2017
Code Name Tahiti XT Polaris 20
Memory 3072 MB 4096 MB
Core Speed 925 MHz 1168 MHz
Memory Speed 5500 MHz 7000 MHz
Power (Max TDP) 250 watts 150 watts
Bandwidth 264000 MB/sec 229376 MB/sec
Texel Rate 118400 Mtexels/sec 149504 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 37376 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: Bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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

Display Prices

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Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 570

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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