Radeon HD 5850 vs Radeon RX 550

Intro

Compare all of that to the Radeon RX 550, which features GPU clock speed of 1100 MHz, and 2048 MB of GDDR5 RAM running at 1750 MHz through a 128-bit bus. It also is comprised of 512 Stream Processors, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon HD 5850		151 Watts
	Difference: 101 Watts (202%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5850 is 12% quicker than the Radeon RX 550 in general, due to its higher data rate. (explain)

Radeon HD 5850		128000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 13312 (12%)

Texel Rate

The Radeon HD 5850 will be a lot (about 48%) better at anisotropic filtering than the Radeon RX 550. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 17000 (48%)

Pixel Rate

The Radeon HD 5850 is quite a bit (more or less 32%) better at AA than the Radeon RX 550, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 5600 (32%)

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 maximum amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum 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 better this number, the better the video card will be at handling 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 graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.