However, AMD has a counter-attack weapon hidden in its Socket AM2 infrastructure.
It seems that all AM2 CPUs were outfitted with a support for Reverse-HyperThreading, 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-treaded 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).
AMDs Reverse-HT is a dynamic technology, and with Microsoft's Windows update and a new processor driver, the driver will copy the graphics drivers of today's 3D accelerators. The driver will detect the app, see if it is multithreaded or not and turn the ReverseHT on, or leave it off. µ
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