NVIDIA's Kepler really did some damage to AMD's 28nm lineup of GPUs. But, it has taken NVIDIA board partners a good while to come out with custom designed PCBs and cooler solutions for the cards. Finally, we are seeing a ZOTAC customized version of the GTX 670. This card features a smaller cooler which removes some unnecessary length.
As you can see above, the new ZOTAC GTX 670 is shorter than the NVIDIA reference card by about 6cm. The cooling solution is an in-house ZOTAC design which is what has allowed it to become shorter. The cooler is comprised of two dense aluminium fin stacks that are fed heat by copper heat pipes that touch the GPU directly.
Each fin stack is cooled by an 80mm fan. This cooler makes the card a bit thicker than what two expansion slots allow for, but probably not by enough to prevent the third slot from being used. Even with this smaller size, the new card comes factory overclocked by about 40MHz core and 200MHz on the memory. The card is expected to launch June 20 worldwide.
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