Radeon HD 5750 512MB vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which features a core clock speed of 575 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 5750 512MB should in theory be a bit better 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 should be a small bit (approximately 10%) more effective at AF than the Radeon R9 M265X. (explain)

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

Pixel Rate

The Radeon HD 5750 512MB will be much (more or less 22%) more effective at FSAA than the Radeon R9 M265X, and also should be able to handle higher screen resolutions more effectively. (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: Bandwidth is the max amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.