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sourceThe GTX 1070 Katana measures just 16mm thick and uses what Galax calls a turbo radiator-a fancy name for a thin cooling solution. Underneath the pancaked shroud is a copper cooling fin and vapor chamber contraption to draw heat away from the GPU and memory. Strategically placed holes in the bracket allow heat to escape.
Galax built a custom PCB for this card. The company says it uses high-quality components in its construction, but doesn't go into detail other than say it features an optimized electrical circuit.
Not only does this air cooled card take up just a single slot, it's also factory overclocked. Galax pushed the base and boost clockspeeds to 1,518MHz and 1,708MHz, respectively, up from Nvidia's reference clocks of 1,506MHz (base) and 1,683MHz (boost).