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

Intro

Compare those specifications to the Radeon RX 470 4GB, which makes use of a 14 nm design. AMD has clocked the core frequency at 926 MHz. The GDDR5 memory is set to run at a frequency of 1650 MHz on this card. It features 2048 SPUs along with 128 Texture Address Units 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 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

In theory, the Radeon R9 390X 8G is 82% quicker than the Radeon RX 470 4GB in general, because of its greater bandwidth. (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 is much (approximately 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

The Radeon R9 390X 8G will be much (about 127%) more effective at anti-aliasing than the Radeon RX 470 4GB, and also will be able to handle higher resolutions while still performing well. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 that the graphics card 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 number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.