Radeon HD 7870 XT vs Radeon RX 570

Intro

Compare that to the Radeon RX 570, which comes with a clock frequency of 1168 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 256-bit memory bus, and makes use of a 14 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 7870 XT		6390 points
	Difference: 5718 (89%)

Ethereum Mining Hash Rate

Radeon RX 570		26 Mh/s
Radeon HD 7870 XT		15 Mh/s
	Difference: 11 (73%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570		150 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 35 Watts (23%)

Memory Bandwidth

The Radeon RX 570, in theory, should perform a bit faster than the Radeon HD 7870 XT in general. (explain)

Radeon RX 570		229376 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 37376 (19%)

Texel Rate

The Radeon RX 570 should be much (more or less 68%) faster with regards to AF than the Radeon HD 7870 XT. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 60704 (68%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 570 is a better choice, by a large margin. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 7870 XT		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 max amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 can be processed in one second. This number is worked out by multiplying the total amount of texture units 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.