Radeon HD 5750 512MB vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which features a core clock frequency of 575 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 5750 512MB, in theory, should be a bit faster than the Radeon R9 M265X overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon HD 5750 512MB will be a bit (about 10%) better at anisotropic filtering than the Radeon R9 M265X. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 2200 (10%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5750 512MB is superior to the Radeon R9 M265X, by far. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 2000 (22%)

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 max amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.