Radeon HD 5970 vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which has a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 5970 should perform much faster than the Radeon R9 M380 overall. (explain)

Radeon HD 5970		256000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 160000 (167%)

Texel Rate

The Radeon HD 5970 is quite a bit (approximately 480%) better at texture filtering than the Radeon R9 M380. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 192000 (480%)

Pixel Rate

The Radeon HD 5970 should be a lot (approximately 480%) more effective at anti-aliasing than the Radeon R9 M380, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 76800 (480%)

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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.