Would you buy an Opteron SMP board for enthuthiasts?

[zir_blazer]

yes but making 2 cpu's work in unison + OC good is rather complex.......

Making a single chip work + OC is not so complex.

I should refer you to s7's thread where he easily ramped up 2 unlocked ES chip on air and set global AMD wprime records.

View count was stellar.......guess no one is interested though

Do you want a Uniprocessor Magny Cours? It should be as hard as tweaking a Dual Opteron, as you're forcing both two dies and two Memory Banks, even though the two dies are now on a single package.
Besides, I don't see why it should be hard. They should have BIOS options to reach on the bare minimum the average overclocking headroom with current standard Server quality parts, something that should be very easy. From nominal, to average overclock, to extreme overclock, there are a whole bunch of differences and requeriments.
Pretty much anyone with free time can reach average overclock on a decent enough Motherboard (Processors are mostly out of question as their usually act the same. The only that is needed is Motherboard and BIOS support, so I actually don't see the point on requesting this to JF-AMD when an independent Motherboard manufacturer could decide to provide this flexibility themselves), or ignoring the entire overclocking deparment but being able to tweak the parts to meet the actual performance or power consumption needs. JF-AMD mentioned in other Thread that there are some Server customers that would like to undervolt Server Processors to reduce power consumption as much as possible when the performance isn't needed, but that also falls in the enthusiast class BIOS tweaking. Oh, do you forgot already this Thread when I asked flexible options in the BIOS for undervolting in mainstream consumer or enthusiast class Motherboards and everyone ignored me (You included)?

Thread views doesn't means sales, actually, they just mean that the Thread title is appealing for the casual viewer. I actually don't pay attention to extreme overclocks because they aren't useful for 24/7, requiere extremely expensive equipment, and are above the point in the Frequency/Voltage curve where power consumption skyrockets for just a 100 MHz jump. These things on practice are totally useless with the exception of bragging rights, and I won't spend my money on them.

wasnt the 4x4 of whatever the 4 core 2p fx socket slower than the intel core2dup, and it cost way more at a time when almost nothing was multithreaded.

The 4x4 platform was AMD sort of response to Core 2 Quad, and Intel replied to it with Skulltrail. And it would happen exactly the same right now because the per Core performance of K10s are slower than Nehalems.