Radeon HD 7970 vs Radeon RX 470

Intro

Compare all of that to the Radeon RX 470, which comes with core clock speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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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		11756 points
Radeon HD 7970		8225 points
	Difference: 3531 (43%)

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

Theoretically speaking, the Radeon HD 7970 will be 25% faster than the Radeon RX 470 in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon RX 470 will be a small bit (approximately 0%) more effective at anisotropic filtering than the Radeon HD 7970. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 470 is the winner, not by a very large margin though. (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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.