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Radeon HD 7970 vs Radeon RX 480 4GB

Intro

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

Compare all of that to the Radeon RX 480 4GB, which makes use of a 14 nm design. AMD has set the core frequency at 1120 MHz. The GDDR5 RAM runs at a speed of 1750 MHz on this specific card. It features 2304 SPUs as well as 144 TAUs 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 480 4GB 25 Mh/s
Radeon HD 7970 21 Mh/s
Difference: 4 (19%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB 150 Watts
Radeon HD 7970 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically, the Radeon HD 7970 should be a small bit faster than the Radeon RX 480 4GB in general. (explain)

Radeon HD 7970 264000 MB/sec
Radeon RX 480 4GB 229376 MB/sec
Difference: 34624 (15%)

Texel Rate

The Radeon RX 480 4GB should be quite a bit (more or less 36%) faster with regards to AF than the Radeon HD 7970. (explain)

Radeon RX 480 4GB 161280 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 42880 (36%)

Pixel Rate

The Radeon RX 480 4GB will be much (approximately 21%) more effective at AA than the Radeon HD 7970, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 480 4GB 35840 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 6240 (21%)

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

Check prices at:

Radeon RX 480 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.

Specifications

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Model Radeon HD 7970 Radeon RX 480 4GB
Manufacturer AMD AMD
Year January 2012 June 2016
Code Name Tahiti XT Polaris 10
Memory 3072 MB 4096 MB
Core Speed 925 MHz 1120 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 161280 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 35840 Mpixels/sec
Unified Shaders 2048 2304
Texture Mapping Units 128 144
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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 480 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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