Try this, the original article: Hardware.info: First official benchmarks AMD FX processor...They only compared with Sandy Bridge Core i5, and not Sandy Bridge Core i7? From the pre-order pricing leaks, it does look probable that AMD is targeting FX against Core i5 2500K range. 

one member of the 8.43GHz team chew* has pointed this:

Yes, its more like Core i7 with 4C/8T. Check out this quote from Chew* (one of the overclockers at AMD FX overclocking event)...

Simple, the module is really the core itself (in other words, a module should be called a core). And inside the core, there's two clusters (AMD's marketing calls them cores, which can be misleading). One cluster is one hardware thread.

On a side note: CPU World: AMD Opteron 6200 alleged benchmarks 

OMG, n i really thought all the while AMD is really going for 8 physical core, instead of this. so they avoid calling it 4c/8t (hyper-threading) not to get sued by intel?
thxs for this explanation btw

No .... AMD FX will only fit in AM3+ mobo.. BTW issit possible to fit in AM3 after bios update?

Majority mobo manufacturer claimed that certain am3 chipset after a flashing of bios can fit in an amd fx ~

First need to identify ur current mobo's manufacturer then goto their website ~ then search for Am3 mobo compatibility for Amd FX processor , majority 880G & 890X chipset mobo is compatible after a flashing bios onli certain 7XX series chipset could support Amd FX .