Nvidia Titan X vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which makes use of a 28 nm design. AMD has set the core frequency at 918 MHz. The GDDR5 RAM runs at a speed of 1375 MHz on this specific model. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285		190 Watts
Nvidia Titan X		250 Watts
	Difference: 60 Watts (32%)

Memory Bandwidth

The Nvidia Titan X should theoretically be a lot faster than the Radeon R9 285 in general. (explain)

Nvidia Titan X		491520 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 315520 (179%)

Texel Rate

The Nvidia Titan X should be a lot (approximately 209%) more effective at texture filtering than the Radeon R9 285. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 214592 (209%)

Pixel Rate

The Nvidia Titan X should be a lot (more or less 363%) faster with regards to anti-aliasing than the Radeon R9 285, and will be capable of handling higher screen resolutions while still performing well. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 106656 (363%)

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 largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.