GeForce GTX 980 vs Radeon Pro Duo

Intro

Compare all of that to the Radeon Pro Duo, which features a clock frequency of 1000 MHz and a HBM memory frequency of 500 MHz. It also uses a 4096-bit memory bus, and makes use of a 28 nm design. It is comprised of 4096 SPUs, 256 Texture Address Units, and 64 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
GeForce GTX 980		13552 points
	Difference: 13615 (100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
Radeon Pro Duo		350 Watts
	Difference: 185 Watts (112%)

Memory Bandwidth

Theoretically speaking, the Radeon Pro Duo will be 357% quicker than the GeForce GTX 980 overall, because of its higher bandwidth. (explain)

Radeon Pro Duo		1024000 MB/sec
GeForce GTX 980		224000 MB/sec
	Difference: 800000 (357%)

Texel Rate

The Radeon Pro Duo should be much (approximately 255%) better at AF than the GeForce GTX 980. (explain)

Radeon Pro Duo		512000 Mtexels/sec
GeForce GTX 980		144128 Mtexels/sec
	Difference: 367872 (255%)

Pixel Rate

The Radeon Pro Duo will be a lot (approximately 78%) better at AA than the GeForce GTX 980, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon Pro Duo		128000 Mpixels/sec
GeForce GTX 980		72064 Mpixels/sec
	Difference: 55936 (78%)

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 max amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.