Geforce GTX 760 vs Radeon HD 7950 3GB

Intro

Compare those specifications to the Radeon HD 7950 3GB, which features a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 384-bit bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, 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 is 25% faster than the Geforce GTX 760 in general, due to its greater 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 is a small bit (about 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

The Geforce GTX 760 should be much (about 23%) more effective at anti-aliasing than the Radeon HD 7950 3GB, and should be able to handle higher resolutions while still performing well. (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 information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.