Here's a little teaser....

[KTE]

E5310 2x 2GHz QC: 4335 http://service.futuremark.com/compare?3dm06=2982103
Supermicro X7DA8

E5320 2x 2.33GHz: 4688 http://www.xtremesystems.org/forums/...1&postcount=21
X5535 2x 2.66GHz: 5662 http://service.futuremark.com/compare?3dm06=746484
Shintai QC 2x 2.66Ghz: 5772 http://www.xtremesystems.org/forums/...0&postcount=25

Q6600 2.4GHz: 3846 http://service.futuremark.com/compare?3dm06=2424217
Asus Striker

How dat for a multi-core efficiency comparison?

BTW the scores differ a lot on the motherboard. The P965 boards and the modern X38 board have like a 200-450point gap for the same processor and setup.

I mean, look at this from the ORB:

Q6600 3607MHz: 5285 (Striker)
Q6600 3420Mhz: 5194 (P5K-E)

And QX6800 on BX2 and P5K:

BX2: 4136
P5K: 4448