Could this replace DDR3?

corsair

Up to 64GB and up to 2933MHz

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Claims world's fastest

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Review: Corsair Vengeance LP 1600 C9B 8GB review

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DDR3-2133X as 8 and 16GB kits

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Low-profile DDR3 memory kits

corsair

The 4 and 8GB at 1866MHz

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For the upcoming Sandy Bridge-E platform

corsair

Low profile 8GB DDR3 Arctic White kit