Choosing your Core 2 Duo is not an easy task anymore. You have the 6xxx series with 4 MB of cache and a FSB of 1066 Mhz (not the 6300 and 6400, please). Down the ladder you may buy a 4xxx processor with 2 MB and 800 Mhz. Or you can grab an even cheaper 2xxx CPU (named Pentium) with just 1 MB and the same 800 Mhz FSB. All that without even counting one-core Celerons or four-core Core 2 Quads. And now there is a new member in the family: 1333MHz FSB processors that will be available later this summer.

Both Anandtech and xbitlabs have tested the E6750 and have reached more or less the same conclusion when it comes to overclocking:  the new G0 core stepping (expected to boast better frequency potential) gains a few hundreds Mhz more. It goes to show that Intel's 65nm process is as mature as it will get, at this point. Remember that this same year, they will be introducing the first 45nm processors.

At stock voltage with a retail Intel heatsink/fan Anandtech was able to run the system at 3.68GHz (460 x 8.0), while xbitlabs used a Zalman CNPS9700 LED and raised Vcore to 1.5V, hitting 3.69GHz. More or less the same, right? The reason is that the CPU goes up all the way until the FSB Wall stops it from going any further. The increase to a 333MHz FSB frequency may prevent some new Core 2 Duo to overclock to their limits. Those frequency multipliers are just too low. On the other hand, the Core micro-architecture was not in need of a faster bus (quad-core processors apart). Quite a mixed bag.

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