Radeon HD 5750 1GB vs Radeon R9 M280X

Intro

Compare that to the Radeon R9 M280X, which features GPU core speed of 900 MHz, and 4096 MB of GDDR5 RAM running at 1375 MHz through a 128-bit bus. It also is comprised of 896 SPUs, 56 Texture Address Units, 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 1GB		86 Watts
	Difference: 11 Watts (15%)

Memory Bandwidth

In theory, the Radeon R9 M280X should be a bit faster than the Radeon HD 5750 1GB in general. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 14400 (20%)

Texel Rate

The Radeon R9 M280X will be quite a bit (more or less 100%) better at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 25200 (100%)

Pixel Rate

The Radeon R9 M280X should be a lot (more or less 29%) more effective at AA than the Radeon HD 5750 1GB, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 5750 1GB		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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core 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 in a 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 number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.