Radeon HD 5970 vs Radeon R9 M375X

Intro

Compare all that to the Radeon R9 M375X, which uses a 28 nm design. AMD has clocked the core frequency at 1015 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this model. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5970 is 256% faster than the Radeon R9 M375X overall, because of its greater bandwidth. (explain)

Radeon HD 5970		256000 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 184000 (256%)

Texel Rate

The Radeon HD 5970 will be a lot (approximately 471%) better at texture filtering than the Radeon R9 M375X. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 191400 (471%)

Pixel Rate

The Radeon HD 5970 is much (more or less 471%) more effective at full screen anti-aliasing than the Radeon R9 M375X, and will be capable of handling higher screen resolutions better. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 76560 (471%)

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 max amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.