Radeon R9 285 vs Radeon RX 5700

Intro

Compare that to the Radeon RX 5700, which features core clock speeds of 1465 MHz on the GPU, and 1750 MHz on the 8096 MB of GDDR6 RAM. 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 285		190 Watts
	Difference: 10 Watts (6%)

Memory Bandwidth

In theory, the Radeon RX 5700 should be 161% faster than the Radeon R9 285 overall, due to its greater data rate. (explain)

Radeon RX 5700		458752 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 282752 (161%)

Texel Rate

The Radeon RX 5700 is a lot (approximately 105%) better at anisotropic filtering than the Radeon R9 285. (explain)

Radeon RX 5700		210960 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 108144 (105%)

Pixel Rate

The Radeon RX 5700 will be much (about 219%) faster with regards to FSAA than the Radeon R9 285, and capable of handling higher resolutions more effectively. (explain)

Radeon RX 5700		93760 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 64384 (219%)

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 largest amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.