AMD cuts to the core with 'Bulldozer' Opterons

[-Boris-]

What do you guys guess the single thread performance will be when only 1 core per module gets used instead of 2? Do you think the extra resorces will give much of a boost compared to using both the cores. I know there's shared L2 cache, but not sure what else can be used in this way.

We already have numbers on this. Running two threads will lower performance of each "core" 10%. That's why it's important to balance the threads evenly between modules. On the other hand the design seems to have lots of power to begin with.