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 memory works at a speed of 1750 MHz on this specific model. It features 2048 SPUs along with 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 perform a small bit faster than the Radeon RX 570 overall. (explain)

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

Texel Rate

The Radeon RX 570 will be much (about 26%) faster with regards to texture filtering 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 a lot (about 26%) better at FSAA than the Radeon HD 7970, and also should be able to handle higher resolutions without losing too much performance. (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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.