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Radeon HD 6970 vs Radeon RX 470 4GB

Intro

The Radeon HD 6970 uses a 40 nm design. AMD has set the core speed at 880 MHz. The GDDR5 memory runs at a frequency of 1375 MHz on this specific card. It features 1536 SPUs as well as 96 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon RX 470 4GB, which comes with clock speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB 120 Watts
Radeon HD 6970 250 Watts
Difference: 130 Watts (108%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should be just a bit faster than the Radeon HD 6970 overall. (explain)

Radeon RX 470 4GB 211200 MB/sec
Radeon HD 6970 176000 MB/sec
Difference: 35200 (20%)

Texel Rate

The Radeon RX 470 4GB is a lot (more or less 40%) more effective at anisotropic filtering than the Radeon HD 6970. (explain)

Radeon RX 470 4GB 118528 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 34048 (40%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 470 4GB is a better choice, though not by far. (explain)

Radeon RX 470 4GB 29632 Mpixels/sec
Radeon HD 6970 28160 Mpixels/sec
Difference: 1472 (5%)

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 6970

Amazon.com

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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.

Specifications

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Model Radeon HD 6970 Radeon RX 470 4GB
Manufacturer AMD AMD
Year December 2010 August 2016
Code Name Cayman XT Polaris 10
Memory 2048 MB 4096 MB
Core Speed 880 MHz 926 MHz
Memory Speed 5500 MHz 6600 MHz
Power (Max TDP) 250 watts 120 watts
Bandwidth 176000 MB/sec 211200 MB/sec
Texel Rate 84480 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 28160 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 1536 2048
Texture Mapping Units 96 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 14 nm
Transistors 2640 million 5700 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 6970

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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