Radeon R9 390X 8G vs Radeon RX 470 4GB

Intro

Compare all that to the Radeon RX 470 4GB, which has a core clock frequency of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also features a 256-bit bus, and uses a 14 nm design. It is made up of 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.

Zcash Mining Hash Rate

Radeon R9 390X 8G		330 Sol/s
Radeon RX 470 4GB		270 Sol/s
	Difference: 60 (22%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon RX 470 4GB		27 Mh/s
	Difference: 5 (19%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 155 Watts (129%)

Memory Bandwidth

The Radeon R9 390X 8G should theoretically perform quite a bit faster than the Radeon RX 470 4GB overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon RX 470 4GB		211200 MB/sec
	Difference: 172800 (82%)

Texel Rate

The Radeon R9 390X 8G should be a lot (more or less 56%) better at anisotropic filtering than the Radeon RX 470 4GB. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon RX 470 4GB		118528 Mtexels/sec
	Difference: 66272 (56%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, by a large margin. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 37568 (127%)

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 over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.