Radeon HD 5750 512MB vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory works at a frequency of 1375 MHz on this model. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 11 Watts (15%)

Memory Bandwidth

In theory, the Radeon R9 M280X should perform a little bit faster than the Radeon HD 5750 512MB in general. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 14400 (20%)

Texel Rate

The Radeon R9 M280X will be a lot (more or less 100%) more effective at anisotropic filtering than the Radeon HD 5750 512MB. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 25200 (100%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M280X is a better choice, and very much so. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 3200 (29%)

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 (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.