Radeon R9 390X 8G vs Radeon RX 480

Intro

Compare those specs to the Radeon RX 480, which comes with GPU core speed of 1120 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is comprised of 2304 Stream Processors, 144 Texture Address Units, 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 R9 390X 8G		13555 points
Radeon RX 480		13349 points
	Difference: 206 (2%)

Zcash Mining Hash Rate

Radeon R9 390X 8G		330 Sol/s
Radeon RX 480		280 Sol/s
	Difference: 50 (18%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon RX 480		27 Mh/s
	Difference: 5 (19%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480		150 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 125 Watts (83%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G should perform much faster than the Radeon RX 480 overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon RX 480		262144 MB/sec
	Difference: 121856 (46%)

Texel Rate

The Radeon R9 390X 8G is a little bit (about 15%) faster with regards to anisotropic filtering than the Radeon RX 480. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon RX 480		161280 Mtexels/sec
	Difference: 23520 (15%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390X 8G is superior to the Radeon RX 480, by a large margin. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon RX 480		35840 Mpixels/sec
	Difference: 31360 (88%)

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 max amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many 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.