Radeon HD 5750 512MB 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 speed at 900 MHz. The GDDR5 memory is set to run at a speed of 1375 MHz on this specific model. It features 896 SPUs along with 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

Performance-wise, the Radeon R9 M280X should in theory be just a bit superior to 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 quite a bit (more or less 100%) faster with regards to 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

The Radeon R9 M280X is quite a bit (more or less 29%) better at AA than the Radeon HD 5750 512MB, and able to handle higher screen resolutions while still performing well. (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 (measured in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.