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Differences What are the advantages of each

Front view of Radeon HD 6990M

Reasons to consider the
AMD Radeon HD 6990M

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Slightly higher pixel rate 22.88 GPixel/s vs 20.13 GPixel/s Around 15% higher pixel rate
Front view of GeForce GTX 680M

Reasons to consider the
Nvidia GeForce GTX 680M

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More memory 4,096 MB vs 2,048 MB 2x more memory
Higher texture rate 80.5 GTexel/s vs 40 GTexel/s More than 2x higher texture rate
Significantly more texture mapping units 112 vs 56 Twice as many texture mapping units
More shading units 1,344 vs 1,120 224 more shading units

Benchmarks Real world tests of Radeon HD 6990M vs GeForce GTX 680M

Battlefield 3

Crysis 2


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