GeForce GTX Titan vs Radeon HD 7950 3GB

Intro

Compare those specifications to the Radeon HD 7950 3GB, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this model. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the GeForce GTX Titan should theoretically be just a bit better than the Radeon HD 7950 3GB overall. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon HD 7950 3GB		240000 MB/sec
	Difference: 48384 (20%)

Texel Rate

The GeForce GTX Titan should be a lot (approximately 109%) faster with regards to anisotropic filtering than the Radeon HD 7950 3GB. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 97888 (109%)

Pixel Rate

The GeForce GTX Titan will be a lot (approximately 57%) faster with regards to FSAA than the Radeon HD 7950 3GB, and able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 14576 (57%)

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 megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.