Here's a GBU (Great Big Ugly) problem: I'm left trying to decide whether to stick with the E6600 I planned for my build or whether to wait for my retailer (local) to get the E6420 in stock. In either case, I'll be going with a relatively mild OC (no greater than 3.2 GHz on air, which is still quicker than my bone-stock 2.6 Northwood-C is running). So far, from reports here, there's little trouble getting either CPU to 3.2, even with the stock HSF (given adequate case cooling, which is handled). Given that, is the slide-down worth it?