Radeon HD 5970 vs Radeon R7 M265

Intro

Compare that to the Radeon R7 M265, which features a clock speed of 725 MHz and a DDR3 memory speed of 1000 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5970 is 700% quicker than the Radeon R7 M265 in general, due to its greater data rate. (explain)

Radeon HD 5970		256000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 224000 (700%)

Texel Rate

The Radeon HD 5970 is quite a bit (approximately 1233%) more effective at AF than the Radeon R7 M265. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 214600 (1233%)

Pixel Rate

The Radeon HD 5970 will be quite a bit (approximately 1500%) better at AA than the Radeon R7 M265, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 87000 (1500%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 are applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, 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 chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.