Radeon R9 390 8G vs Radeon RX 5700

Intro

Compare those specs to the Radeon RX 5700, which makes use of a 7 nm design. AMD has set the core speed at 1465 MHz. The GDDR6 memory is set to run at a speed of 1750 MHz on this specific card. It features 2304 SPUs along with 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

Theoretically, the Radeon RX 5700 should be a small bit faster than the Radeon R9 390 8G overall. (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 (more or less 32%) better at 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 a high resolution is important to you, then the Radeon RX 5700 is a better choice, 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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one 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 - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.