Geforce GTX 760 vs Radeon HD 7950 3GB

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 760		170 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 30 Watts (18%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 3GB is 25% faster than the Geforce GTX 760 in general, because of its higher data rate. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Geforce GTX 760		192256 MB/sec
	Difference: 47744 (25%)

Texel Rate

The Geforce GTX 760 will be a small bit (more or less 5%) better at anisotropic filtering than the Radeon HD 7950 3GB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 4480 (5%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 760 is superior to the Radeon HD 7950 3GB, by a large margin. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 5760 (23%)

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 (in units of MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at 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 that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.