Radeon HD 5450 vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which features GPU core speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 80 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 R9 270X		180 Watts
	Difference: 161 Watts (847%)

Memory Bandwidth

Performance-wise, the Radeon R9 270X should theoretically be quite a bit better than the Radeon HD 5450 in general. (explain)

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

Texel Rate

The Radeon R9 270X should be much (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 the winner, 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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.