Radeon HD 5750 512MB vs Radeon R9 M280X

Intro

Compare that to the Radeon R9 M280X, which features a GPU core clock speed of 900 MHz, and 4096 MB of GDDR5 memory running at 1375 MHz through a 128-bit bus. It also is comprised of 896 SPUs, 56 TAUs, and 16 Raster Operation 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 is much (approximately 100%) more effective at texture 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

The Radeon R9 M280X is quite a bit (about 29%) more effective at AA than the Radeon HD 5750 512MB, and will be able to handle higher resolutions without slowing down too much. (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 largest amount of data (in units of megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 are processed in one second. This number is calculated by multiplying the total 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 in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.