Radeon Pro Duo vs Radeon R9 M375

Intro

Compare all of that to the Radeon R9 M375, which has GPU clock speed of 1015 MHz, and 4096 MB of DDR3 memory set to run at 1100 MHz through a 128-bit bus. It also 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 speaking, the Radeon Pro Duo should be a lot faster than the Radeon R9 M375 in general. (explain)

Radeon Pro Duo		1024000 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 988800 (2809%)

Texel Rate

The Radeon Pro Duo will be a lot (more or less 1161%) better at texture filtering than the Radeon R9 M375. (explain)

Radeon Pro Duo		512000 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 471400 (1161%)

Pixel Rate

The Radeon Pro Duo is a lot (more or less 688%) better at full screen anti-aliasing than the Radeon R9 M375, and also will be capable of handling higher screen resolutions better. (explain)

Radeon Pro Duo		128000 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 111760 (688%)

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 data (counted in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.