Radeon R9 280X vs Radeon RX 590

Intro

Compare all that to the Radeon RX 590, which comes with a GPU core clock speed of 1469 MHz, and 8192 MB of GDDR5 memory set to run at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590		175 Watts
Radeon R9 280X		250 Watts
	Difference: 75 Watts (43%)

Memory Bandwidth

The Radeon R9 280X should theoretically be a bit faster than the Radeon RX 590 in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon RX 590		262144 MB/sec
	Difference: 25856 (10%)

Texel Rate

The Radeon RX 590 should be quite a bit (approximately 94%) faster with regards to texture filtering than the Radeon R9 280X. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 102736 (94%)

Pixel Rate

The Radeon RX 590 will be much (about 73%) faster with regards to FSAA than the Radeon R9 280X, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 19808 (73%)

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 transferred over the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.