Nvidia Titan X vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which features core speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 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, in theory, should be much faster than the Radeon R9 285 overall. (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 (about 209%) faster with regards to anisotropic 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 is much (about 363%) more effective at AA than the Radeon R9 285, and will be able to handle higher resolutions without slowing down too much. (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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, 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 maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.