Radeon HD 5750 512MB vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which comes with core clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon R7 250X 2GB		95 Watts
	Difference: 9 Watts (10%)

Memory Bandwidth

Performance-wise, the Radeon HD 5750 512MB should theoretically be a small bit better than the Radeon R7 250X 2GB in general. (explain)

Radeon HD 5750 512MB		73600 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon R7 250X 2GB should be a lot (about 59%) better at texture filtering than the Radeon HD 5750 512MB. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 14800 (59%)

Pixel Rate

The Radeon R7 250X 2GB is quite a bit (more or less 43%) more effective at full screen anti-aliasing than the Radeon HD 5750 512MB, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 4800 (43%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.