Geforce GTX 680 vs Radeon HD 6950

Intro

Compare those specs to the Radeon HD 6950, which features core clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 1408 SPUs along with 88 Texture Address Units and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 680		7650 points
Radeon HD 6950		3240 points
	Difference: 4410 (136%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680		195 Watts
Radeon HD 6950		200 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

Theoretically, the Geforce GTX 680 should be a small bit faster than the Radeon HD 6950 overall. (explain)

Geforce GTX 680		192256 MB/sec
Radeon HD 6950		160000 MB/sec
	Difference: 32256 (20%)

Texel Rate

The Geforce GTX 680 should be quite a bit (about 83%) faster with regards to AF than the Radeon HD 6950. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon HD 6950		70400 Mtexels/sec
	Difference: 58368 (83%)

Pixel Rate

The Geforce GTX 680 should be much (more or less 26%) faster with regards to full screen anti-aliasing than the Radeon HD 6950, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon HD 6950		25600 Mpixels/sec
	Difference: 6592 (26%)

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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could 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 colour ROPs 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.