Nvidia Titan X vs Radeon R9 290

Intro

Compare all of that to the Radeon R9 290, which features a clock frequency of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 512-bit memory bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Nvidia Titan X		250 Watts
Radeon R9 290		300 Watts
	Difference: 50 Watts (20%)

Memory Bandwidth

In theory, the Nvidia Titan X will be 54% quicker than the Radeon R9 290 overall, because of its higher bandwidth. (explain)

Nvidia Titan X		491520 MB/sec
Radeon R9 290		320000 MB/sec
	Difference: 171520 (54%)

Texel Rate

The Nvidia Titan X should be a lot (about 148%) faster with regards to anisotropic filtering than the Radeon R9 290. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon R9 290		128000 Mtexels/sec
	Difference: 189408 (148%)

Pixel Rate

The Nvidia Titan X will be much (approximately 166%) more effective at FSAA than the Radeon R9 290, and should be able to handle higher resolutions more effectively. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon R9 290		51200 Mpixels/sec
	Difference: 84832 (166%)

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.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one 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 - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.