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Radeon HD 6970 vs Radeon RX 470


Intro

The Radeon HD 6970 makes use of a 40 nm design. AMD has set the core speed at 880 MHz. The GDDR5 RAM is set to run at a speed of 1375 MHz on this specific card. It features 1536 SPUs along with 96 Texture Address Units and 32 ROPs.

Compare all of that to the Radeon RX 470, which has GPU clock speed of 926 MHz, and 8192 MB of GDDR5 RAM set to run at 1650 MHz through a 256-bit bus. It also features 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

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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 6970 3470 points
Difference: 8340 (240%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon RX 470, in theory, should be a bit faster than the Radeon HD 6970 in general. (explain)

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

Texel Rate

The Radeon RX 470 will be quite a bit (approximately 40%) more effective at texture filtering than the Radeon HD 6970. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 470 is superior to the Radeon HD 6970, though not by far. (explain)

Radeon RX 470 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

Radeon HD 6970

Radeon RX 470

Specifications

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Model Radeon HD 6970 Radeon RX 470
Manufacturer AMD AMD
Year December 2010 August 2016
Code Name Cayman XT Polaris 10
Memory 2048 MB 8192 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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated 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 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 write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Radeon HD 6970

Radeon RX 470

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