Radeon HD 7970 vs Radeon RX 570

Intro

Compare those specs to the Radeon RX 570, which makes use of a 14 nm design. AMD has clocked the core speed at 1168 MHz. The GDDR5 RAM works at a frequency of 1750 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs 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 570		12108 points
Radeon HD 7970		8225 points
	Difference: 3883 (47%)

Ethereum Mining Hash Rate

Radeon RX 570		26 Mh/s
Radeon HD 7970		21 Mh/s
	Difference: 5 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570		150 Watts
Radeon HD 7970		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

The Radeon HD 7970 should in theory be a bit faster than the Radeon RX 570 in general. (explain)

Radeon HD 7970		264000 MB/sec
Radeon RX 570		229376 MB/sec
	Difference: 34624 (15%)

Texel Rate

The Radeon RX 570 is quite a bit (about 26%) better at AF than the Radeon HD 7970. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 7970		118400 Mtexels/sec
	Difference: 31104 (26%)

Pixel Rate

The Radeon RX 570 should be quite a bit (about 26%) more effective at full screen anti-aliasing than the Radeon HD 7970, and also will be able to handle higher screen resolutions better. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 7776 (26%)

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 moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the 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 number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many 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.