AMD cuts to the core with 'Bulldozer' Opterons

[Helmore]

If the thing they are tying does not get ready, they will use the original version of SB and in that case they will use more cores to fight BD similar to what things are with AMD and Intel right now.

AMD is using more silicon to fight Intel per cpu...

I've no idea what you're talking about with your 'different versions of SB'. Where did you get that information from?

AMD using more silicon to fight Intel? I'm not so sure about that, I wouldn't be surprised if a BD module was smaller than a SB core.

http://images.anandtech.com/reviews/cpu/amd/FAD2009/2/bulldozer.jpg

Since there is only one fetch and decode units per module, are there any chance it could use all ALUs for a Single Thread ?

They could theoretically do that, but I don't think they will as it is very very hard to get more instruction parallelism out of a single thread and you would hardly gain any performance (for single threaded loads) by using all 8 INT execution units for a single thread.