The Inquirer found out AMD has one major secret weapon hidden in its Socket AM2 processors. It appears that all AM2 CPUs feature support for the new Reverse-HyerThreading technology from AMD, an architectural change which enables software to think that it is working on a single-core alone.
By combining two cores, the company has been able to produce the six IPC "core" that will go head to head against four IPC "core" from Conroe/Merom/WoodCrest combo.
It seems that in certain cases, even an old AMD Athlon 64 3800+ can wipe the floor with Core 2 Duo E6300 CPU.
As we all know - the results from E6700 and X6800 against FX-62 will be nice, but the real fight with AMD is the one for the Conroe with 2MB of L2 cache. The system memory avoidance technology is working flawlessly on a 4MB cache model, but the case is reversed in the two Meg cache variant, especially in cache-hit sensitive apps, such as games.
In single-threaded apps, Core 2 Duo is expected to struggle against Reverse HyperThreading CPUs, which work at higher clock frequencies and produce higher instruction per clock ratios (IPC).