Radeon R9 390 8G vs Radeon RX 5700

Intro

Compare all of that to the Radeon RX 5700, which comes with GPU clock speed of 1465 MHz, and 8096 MB of GDDR6 memory running at 1750 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5700		180 Watts
Radeon R9 390 8G		275 Watts
	Difference: 95 Watts (53%)

Memory Bandwidth

In theory, the Radeon RX 5700 will be 19% faster than the Radeon R9 390 8G in general, due to its higher bandwidth. (explain)

Radeon RX 5700		458752 MB/sec
Radeon R9 390 8G		384000 MB/sec
	Difference: 74752 (19%)

Texel Rate

The Radeon RX 5700 will be much (approximately 32%) faster with regards to texture filtering than the Radeon R9 390 8G. (explain)

Radeon RX 5700		210960 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 50960 (32%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 5700 is the winner, and very much so. (explain)

Radeon RX 5700		93760 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 29760 (47%)

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 information (counted in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 can be applied in one second. This figure is calculated 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.