Radeon HD 7970 vs Radeon RX 470 4GB

Intro

Compare those specifications to the Radeon RX 470 4GB, which comes with a clock frequency of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also features a 256-bit bus, and makes use of a 14 nm design. It features 2048 SPUs, 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.

Ethereum Mining Hash Rate

Radeon RX 470 4GB		27 Mh/s
Radeon HD 7970		21 Mh/s
	Difference: 6 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon HD 7970		250 Watts
	Difference: 130 Watts (108%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 is 25% quicker than the Radeon RX 470 4GB in general, because of its higher bandwidth. (explain)

Radeon HD 7970		264000 MB/sec
Radeon RX 470 4GB		211200 MB/sec
	Difference: 52800 (25%)

Texel Rate

The Radeon RX 470 4GB should be just a bit (about 0%) faster with regards to texture filtering than the Radeon HD 7970. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 7970		118400 Mtexels/sec
	Difference: 128 (0%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 470 4GB is the winner, not by a very large margin though. (explain)

Radeon RX 470 4GB		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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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