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Zotac GeForce GTX 780 AMP! Edition preview: Compared with four other GeForce GTX 780 cards

We recently reviewed four overclocked GeForce GTX 780 graphics cards with custom coolers from ASUS, EVGA, Inno3D and MSI. Zotac has now introduced its extreme version of the GeForce GTX 780, the Zotac GeForce GTX 780 AMP! Edition.

Zotac proudly announces the GeForce GTX 780 AMP! Edition as the most overclocked GeForce GTX 780 available right now. While we haven't tested every single GeForce 780 in existence, it is indeed faster than the four we have reviewed so far. The GPU on Zotac card is clocked at 1,006MHz, with a 1,059MHz Boost clock. That makes the GPU as fast as the one on the Inno3D GeForce GTX 780 iChill, and faster than those of ASUS, EVGA and MSI. The GPU clock frequency of the standard reference card is 863MHz, which makes the Zotac card 16 per cent faster.

The memory clock frequency of the Zotac card is higher than the rest too, with 1,553MHz. Inno3D increased it to 1,533MHz, while the three other cards left it at the standard 1,502MHz. Higher clock frequencies don't automatically lead to better performance, as you will see in our test results.

For the AMP! Edition card, Zotac has used a special three-fan cooler. The central fan has a diameter of 8.5cm, and the outer two measure in at 7.5cm. It's a dual-slot cooler, and despite the fact that the heatsink is pretty compact, it still has a stylish design. It has five 6mm heatpipes.

Like the other GeForce GTX 780 cards, the AMP! Edition has two DVI ports, one HDMI and one DisplayPort. The Zotac card has one six-pin and one eight-pin PEG connector, along with two SLI connectors for combining a total of four 780s. The amount of video memory is again 3GB.

According to Zotac, the new card has a recommended retail price of £589. That's higher than the other four cards we tested, based on the prices listed by stores on our site. The card does not come with any games. You can read the rest of Zotac GeForce GTX 780 AMP! Edition preview on