Radeon HD 7870 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which comes with core speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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.

Zcash Mining Hash Rate

Radeon RX 470 4GB		270 Sol/s
Radeon HD 7870		172 Sol/s
	Difference: 98 (57%)

Ethereum Mining Hash Rate

Radeon RX 470 4GB		27 Mh/s
Radeon HD 7870		16 Mh/s
	Difference: 11 (69%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon HD 7870		175 Watts
	Difference: 55 Watts (46%)

Memory Bandwidth

The Radeon RX 470 4GB should theoretically be much faster than the Radeon HD 7870 in general. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 57600 (38%)

Texel Rate

The Radeon RX 470 4GB should be quite a bit (about 48%) faster with regards to anisotropic filtering than the Radeon HD 7870. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 38528 (48%)

Pixel Rate

The Radeon HD 7870 is just a bit (approximately 8%) faster with regards to FSAA than the Radeon RX 470 4GB, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 2368 (8%)

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 data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, 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 most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.