Lets bury for real that stupid war between overclockers and JF-AMD about 2P overclockable systems. Lets check the problem by type of potential buyers

First, you have the enthusiast gamers who build his own computer to be able to play crysis at high details. These buyers dont need 2P systems cause most of the game dont even need more than 4 core for decent gameplay and also game developpers don't want to make their game too much threaded if the majority of their potential buyer only have a 2-4 core cpu and a mid-range gpu cause that would cut their profits. So gamers dont need 2p overclockable systems

Next up, we have the extreme overclocker who can buy the best of the best and needs the best of best to stay competitive. Happily for the overclocking sport, 2p systems are bad in the benchmarks that is used in overclocking, cause if 2p systems would be doing good, it would limit again the number of people that can be competitive in this sports because the cost of the systems would rise alot. And less people who can be competitive means less fun for the top guys who when they get at the top, can never be took out from the top by a newcomer because its a very small amount of people that can buy the systems needed to get to the top and it makes it also not fun for new people to try to be competitive because the cost is way too high and they cant afford it. So the overclocking scene dont want 2p overclockable systems that can destroy overclocking world record easily.

Then we have the usual 2p systems users ( scientific, video editor, content creator and cad), happily for them, most of their normal software now use both the cpu and the gpu (cuda, mercury engine, opengl) so they don't need anymore the biggest amount of cpu power for a reasonnable cost ( a normal 2p systems cost somewhere between 5 to 10 grand while a 4p systems normally start near 15 grand) cause now they can also add some gpu power to cut down the waiting times for the work to be done( and for most of them doing more work in the same amount of time for more profits or faster research) and also mostly because they need 99% stability while gamers need about 75% stability and overclockers need 20-50% stability because they dont want to redo their work because of a unstable overclocked cpu even thought they dont need 99.999999999% stability of mission-critical 4p servers. Most of the potential buyers use their computer for their job, if the computer is not stable, they are just simply losing money. So usual 2p systems buyers dont need 2p overclockable systems.

After we have servers and as i said they need 99.99999999% stability something that a overclocked systems cant do and most of them need the most memory and the most cpu power they can get so they are mostly 4p systems potential buyers.

Finally, we have a very small group called The Crunchers, which wants the most cpu power, need about 80-85% stability, want low electricity usage, overclocking options because they dont need as much stability as the normal workstation buyer and some of them also need the most pci-e lane they can get for distributed computing projects that can use gpu powers. They are a though crowd to please and they are a small group of potential buyers, sure we would be happy to have 4p or 2p overclockable systems but we can also be very happy with 1p systems or just have the right connection for some unlocked es cpu.

So the only person that could ask for some 2p overclockable systems are crunchers and as JF-AMD said we are a too small amount of potential buyers for them to do some R&D and testing for a couple thousand of cpu sold to crunchers.