Radeon HD 5450 vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM works at a speed of 1400 MHz on this model. It features 1280 SPUs as well as 80 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 R9 270X		180 Watts
	Difference: 161 Watts (847%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X is 1300% quicker than the Radeon HD 5450 overall, because of its higher data rate. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 166400 (1300%)

Texel Rate

The Radeon R9 270X should be quite a bit (about 1438%) better at anisotropic filtering than the Radeon HD 5450. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 74800 (1438%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 270X is superior to the Radeon HD 5450, and very much so. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 29400 (1131%)

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 megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 applied in one second. This is calculated 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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