Radeon HD 5450 vs Radeon RX 470 4GB

Intro

Compare those specifications to the Radeon RX 470 4GB, which features core speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs 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 470 4GB		120 Watts
	Difference: 101 Watts (532%)

Memory Bandwidth

The Radeon RX 470 4GB should theoretically perform much faster than the Radeon HD 5450 in general. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 198400 (1550%)

Texel Rate

The Radeon RX 470 4GB will be much (more or less 2179%) better at texture filtering than the Radeon HD 5450. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 113328 (2179%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 470 4GB is superior to the Radeon HD 5450, by a large margin. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 27032 (1040%)

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 max amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.