Radeon HD 5830 vs Radeon RX 550

Intro

Compare those specifications to the Radeon RX 550, which features GPU clock speed of 1100 MHz, and 2048 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also is comprised of 512 Stream Processors, 32 TAUs, 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 5830		175 Watts
	Difference: 125 Watts (250%)

Memory Bandwidth

The Radeon HD 5830, in theory, should be a little bit faster than the Radeon RX 550 in general. (explain)

Radeon HD 5830		128000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 13312 (12%)

Texel Rate

The Radeon HD 5830 is quite a bit (about 27%) better at texture filtering than the Radeon RX 550. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 9600 (27%)

Pixel Rate

The Radeon RX 550 is a lot (approximately 38%) faster with regards to full screen anti-aliasing than the Radeon HD 5830, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 4800 (38%)

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 largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher 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 amount of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.