Nvidia Titan X vs Radeon HD 4790

Intro

Compare that to the Radeon HD 4790, which uses a 55 nm design. AMD has set the core speed at 600 MHz. The GDDR5 RAM works at a frequency of 800 MHz on this card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Nvidia Titan X, in theory, should be a lot faster than the Radeon HD 4790 overall. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 4790		102400 MB/sec
	Difference: 389120 (380%)

Texel Rate

The Nvidia Titan X will be a lot (more or less 1553%) faster with regards to texture filtering than the Radeon HD 4790. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 4790		19200 Mtexels/sec
	Difference: 298208 (1553%)

Pixel Rate

The Nvidia Titan X should be a lot (more or less 1317%) better at AA than the Radeon HD 4790, and will be able to handle higher resolutions better. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 4790		9600 Mpixels/sec
	Difference: 126432 (1317%)

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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics 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 amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.