Radeon HD 5450 vs Radeon RX 5500 XT

Intro

Compare all that to the Radeon RX 5500 XT, which comes with a clock speed of 1717 MHz and a GDDR6 memory frequency of 1750 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is made up of 1408 SPUs, 88 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
Radeon RX 5500 XT		130 Watts
	Difference: 111 Watts (584%)

Memory Bandwidth

In theory, the Radeon RX 5500 XT is 1692% faster than the Radeon HD 5450 in general, because of its higher data rate. (explain)

Radeon RX 5500 XT		229376 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 216576 (1692%)

Texel Rate

The Radeon RX 5500 XT will be quite a bit (more or less 2806%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 145896 (2806%)

Pixel Rate

The Radeon RX 5500 XT will be much (approximately 2013%) faster with regards to full screen anti-aliasing than the Radeon HD 5450, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 52344 (2013%)

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 MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.