Radeon HD 5450 vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 RAM is set to run at a speed of 1375 MHz on this model. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

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 theoretically be a lot better than 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 will be quite a bit (about 869%) more effective at 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

The Radeon R9 M280X will be quite a bit (about 454%) faster with regards to anti-aliasing than the Radeon HD 5450, and able to handle higher resolutions more effectively. (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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.