Radeon HD 5450 vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which features core clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
Radeon R9 M280X		75 Watts
	Difference: 56 Watts (295%)

Memory Bandwidth

Performance-wise, the Radeon R9 M280X should in theory be much superior to the Radeon HD 5450 overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 75200 (588%)

Texel Rate

The Radeon R9 M280X is quite a bit (about 869%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 45200 (869%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M280X is superior to the Radeon HD 5450, by a large margin. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 11800 (454%)

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 moved past the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 get to the maximum fill rate.