Geforce GTX 760 vs Radeon HD 7950 3GB

Intro

Compare all of that to the Radeon HD 7950 3GB, which has GPU core speed of 800 MHz, and 3072 MB of GDDR5 memory running at 1250 MHz through a 384-bit bus. It also is comprised of 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

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

In theory, the Radeon HD 7950 3GB should be 25% faster than the Geforce GTX 760 in general, due to its higher bandwidth. (explain)

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

Texel Rate

The Geforce GTX 760 is just a bit (about 5%) faster with regards to texture 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

The Geforce GTX 760 should be quite a bit (about 23%) more effective at AA than the Radeon HD 7950 3GB, and capable of handling higher resolutions without slowing down too much. (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 largest amount of information (in units of MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video 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 number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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 - the lower the bandwidth is, the lower the ability to get to the max fill rate.