Radeon Pro Duo vs Radeon R9 295X2

Intro

Compare those specs to the Radeon R9 295X2, which uses a 28 nm design. AMD has set the core frequency at 1018 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this card. It features 2816 SPUs as well as 176 Texture Address Units and 64 Rasterization Operator Units.

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 295X2		21205 points
	Difference: 5962 (28%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon Pro Duo		350 Watts
Radeon R9 295X2		500 Watts
	Difference: 150 Watts (43%)

Memory Bandwidth

Theoretically, the Radeon Pro Duo should perform quite a bit faster than the Radeon R9 295X2 overall. (explain)

Radeon Pro Duo		1024000 MB/sec
Radeon R9 295X2		640000 MB/sec
	Difference: 384000 (60%)

Texel Rate

The Radeon Pro Duo will be a lot (more or less 43%) more effective at AF than the Radeon R9 295X2. (explain)

Radeon Pro Duo		512000 Mtexels/sec
Radeon R9 295X2		358336 Mtexels/sec
	Difference: 153664 (43%)

Pixel Rate

The Radeon R9 295X2 should be a little bit (about 2%) better at FSAA than the Radeon Pro Duo, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon Pro Duo		128000 Mpixels/sec
	Difference: 2304 (2%)

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 largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the 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 most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.