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The resulting memory bandwidth is as high as 230.4 GB/s, so the Zotac GeForce GTX 770 AMP! Edition should have an edge over the Palit GeForce GTX 770 JetStream:

The ASIC quality of the GPU die is almost the same at 81.0%.

Zotac’s cooler is called Dual Silencer. It consists of an aluminum heatsink with heat pipes, a couple of fans, and a metallic casing.

There are individual aluminum heatsinks with thermal pads on the memory chips and power transistors. The heatsink has five heat pipes, two of which are 8 mm in diameter. The three remaining pipes are 6 mm in diameter.

As opposed to the Palit's cooler, the pipes are soldered to the heatsink, and in a very neat way. The heatsink is cooled by two 70x10mm fans from FirstD:

Their speed is PWM-regulated in a range of 1000 to 3300 RPM. In our temperature test the speed was 2160 RPM when the fans were regulated automatically.

The peak GPU temperature was 81°C. Considering the same GPU clock rates and ASIC quality, the Zotac cooler is not better than the Palit one. It is 3°C worse at the maximum speed of the fans:

Still, the Dual Silencer is quite good at its job.

The Zotac GeForce GTX 770 AMP! Edition doesn’t have high overclocking potential. Its GPU could be overclocked by a mere 35 MHz and its memory, by 580 MHz.

The resulting clock rates were 1185/1237/7780 MHz. The Palit card reached higher frequencies in our tests.

The peak GPU temperature of the overclocked Zotac was 82°C, its fans rotating at 2220 RPM.

 

 
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