Radeon HD 5450 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which has a GPU core clock speed of 926 MHz, and 4096 MB of GDDR5 RAM set to run at 1650 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 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 should be quite a bit (more or less 2179%) faster with regards to anisotropic 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

The Radeon RX 470 4GB should be quite a bit (about 1040%) more effective at FSAA than the Radeon HD 5450, and also should be able to handle higher resolutions better. (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 maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.