What is the difference between the Opteron 1xx and Athlon64 FX supposed to be?

[Electrode]

This one really has me scratching my head. As far as I can tell, in the current generation they are 100% identical in all but name and rating scheme. They both use the same Sledgehammer core, both are in Socket 940 packages, both have dual channel 72-bit memory controllers. Both are intended for single-processor systems.

My best guess is that the differences lie in the future, probably with the Opteron keeping the 940-pin package and the FX going to 939. Is there some other difference I've missed?

 

[redhatlinux]

Could be wrong here but I thought that all Opterons got three Hypertransport links and that A64FX's only get 1.

 

[bgeh]

nope, they're the same, only that A64-FX is at 2.2GHz

 

[Jeff7181]

I'm pretty sure redhatlinux is right... the FX's have the extra two HT links disabled because they're not designed for use in multiprocessor systems.

 

[Electrode]

But isn't the O1xx similarly crippled?