Radeon HD 7870 vs Radeon RX 570

Intro

Compare those specs to the Radeon RX 570, which has a core clock speed of 1168 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 256-bit memory bus, and uses a 14 nm design. It features 2048 SPUs, 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 7870		6230 points
	Difference: 5878 (94%)

Zcash Mining Hash Rate

Radeon RX 570		298 Sol/s
Radeon HD 7870		172 Sol/s
	Difference: 126 (73%)

Ethereum Mining Hash Rate

Radeon RX 570		26 Mh/s
Radeon HD 7870		16 Mh/s
	Difference: 10 (63%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570		150 Watts
Radeon HD 7870		175 Watts
	Difference: 25 Watts (17%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 570 should perform a lot faster than the Radeon HD 7870 in general. (explain)

Radeon RX 570		229376 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 75776 (49%)

Texel Rate

The Radeon RX 570 should be much (approximately 87%) faster with regards to AF than the Radeon HD 7870. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 69504 (87%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 570 is superior to the Radeon HD 7870, not by a very large margin though. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 5376 (17%)

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 maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.