Radeon RX 550 vs Radeon RX 580

Intro

Compare those specifications to the Radeon RX 580, which has core clock speeds of 1257 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 memory. It features 2304 SPUs as well as 144 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

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 RX 580		13630 points
Radeon RX 550		3507 points
	Difference: 10123 (289%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon RX 580		185 Watts
	Difference: 135 Watts (270%)

Memory Bandwidth

Performance-wise, the Radeon RX 580 should theoretically be a lot superior to the Radeon RX 550 overall. (explain)

Radeon RX 580		262144 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 147456 (129%)

Texel Rate

The Radeon RX 580 is a lot (about 414%) faster with regards to AF than the Radeon RX 550. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 145808 (414%)

Pixel Rate

The Radeon RX 580 is much (approximately 129%) better at AA than the Radeon RX 550, and should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 22624 (129%)

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 max amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.