Radeon HD 5970 vs Radeon R9 M375X

Intro

Compare those specs to the Radeon R9 M375X, which uses a 28 nm design. AMD has set the core speed at 1015 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this particular model. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5970 should be 256% faster than the Radeon R9 M375X in general, because of its greater data rate. (explain)

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

Texel Rate

The Radeon HD 5970 is quite a bit (about 471%) faster with regards to 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 should be quite a bit (about 471%) more effective at FSAA than the Radeon R9 M375X, and also should be capable of handling higher resolutions without losing too much performance. (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 largest amount of information (measured in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.