Radeon HD 5970 vs Radeon R7 M265

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 5970 should in theory be much better than the Radeon R7 M265 in general. (explain)

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

Texel Rate

The Radeon HD 5970 will be much (about 1233%) better at anisotropic filtering 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 is a lot (more or less 1500%) faster with regards to AA than the Radeon R7 M265, and capable of handling higher 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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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