GeForce GTX Titan X vs Radeon HD 7950 3GB

Intro

Compare that to the Radeon HD 7950 3GB, which comes with a core clock frequency of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 384-bit memory bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB		200 Watts
GeForce GTX Titan X		250 Watts
	Difference: 50 Watts (25%)

Memory Bandwidth

The GeForce GTX Titan X should theoretically perform much faster than the Radeon HD 7950 3GB overall. (explain)

GeForce GTX Titan X		336000 MB/sec
Radeon HD 7950 3GB		240000 MB/sec
	Difference: 96000 (40%)

Texel Rate

The GeForce GTX Titan X will be a lot (more or less 114%) more effective at anisotropic filtering than the Radeon HD 7950 3GB. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 102400 (114%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX Titan X is a better choice, and very much so. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 70400 (275%)

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 information (counted in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.