Radeon HD 5450 vs Radeon RX 470

Intro

Compare those specs to the Radeon RX 470, which comes with a clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
Radeon RX 470		120 Watts
	Difference: 101 Watts (532%)

Memory Bandwidth

The Radeon RX 470, in theory, should be quite a bit faster than the Radeon HD 5450 overall. (explain)

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

Texel Rate

The Radeon RX 470 will be much (about 2179%) more effective at AF than the Radeon HD 5450. (explain)

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

Pixel Rate

The Radeon RX 470 is quite a bit (more or less 1040%) faster with regards to FSAA than the Radeon HD 5450, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 470		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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.