Radeon Pro Duo vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this 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

Performance-wise, the Radeon Pro Duo should theoretically be much better than the Radeon R9 M380 overall. (explain)

Radeon Pro Duo		1024000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 928000 (967%)

Texel Rate

The Radeon Pro Duo will be quite a bit (about 1180%) faster with regards to AF than the Radeon R9 M380. (explain)

Radeon Pro Duo		512000 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 472000 (1180%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon Pro Duo is superior to the Radeon R9 M380, by far. (explain)

Radeon Pro Duo		128000 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 112000 (700%)

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: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 are applied per second. This is worked out by multiplying the total number 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated 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 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.