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This Classified version of the GTX 680 features a hot-clocked GPU fed by a 14-phase power delivery system. The reference design uses only four phases, EVGA says, and a custom PCB was required to accommodate the additional power circuitry. Rather than making the card longer, EVGA made it taller. The difference is nicely illustrated in the picture above. You'll notice that the Classified uses a larger version of the blower found on the standard card. Most graphics card makers seem to be relying on multi-fan coolers these days, but EVGA prefers this blower setup because it pumps hot air out of the case rather than recirculating it.