Radeon Pro Duo vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which uses a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM works at a speed of 1400 MHz on this particular model. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon Pro Duo		27167 points
Radeon R9 270		5943 points
	Difference: 21224 (357%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
Radeon Pro Duo		350 Watts
	Difference: 200 Watts (133%)

Memory Bandwidth

Theoretically speaking, the Radeon Pro Duo should be much faster than the Radeon R9 270 overall. (explain)

Radeon Pro Duo		1024000 MB/sec
Radeon R9 270		179200 MB/sec
	Difference: 844800 (471%)

Texel Rate

The Radeon Pro Duo is much (about 611%) more effective at texture filtering than the Radeon R9 270. (explain)

Radeon Pro Duo		512000 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 440000 (611%)

Pixel Rate

The Radeon Pro Duo should be much (more or less 344%) better at AA than the Radeon R9 270, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon Pro Duo		128000 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 99200 (344%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.