The Freezer coolers are made from Copper and Brass. The Brass has a clear coat finish, for a nicer visual appearance. They are the only available coolers which fit on an SLI system with 2x6800 Ultra/GT (with Innovatek NV40 or Alphacool NeXxos NVXP-2), or 2x6600 non-GT/GT (with flat cooler). On non-SLI systems the cooler should fit with any video card (except with VGA Silencer etc.).

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