Once we removed the cooler we discovered that the card actually uses Samsung 1.2 ns K4J55323QG-BC12 memory. It can maximally work at 1800MHz but we managed to overclock even more than that. The memory actually works at 1850MHz without any problems. The cooler is a little bit different from the reference one as it covers the memory chips as well. I guess that you have to cool the memory at such speeds.
This is some insane performance for a 7900GT. It beats the standard 7900GTX in most tests, and costs around $150 less on average. Plus, when you receive it in a massive box, it has to be good! Read the first impressions at The Inquirer.