Athlon 64 X2 hyperthreading enabled?

http://www.x86-secret.com/?option=newsd&nid=870

I'm not proclaiming that they are hyperthreading compatible, but apparently some hyperthreading capabilities have been turned on. Just something to keep an eye on.

that makes sense - externally the cpu package will appear as two cpus using hyperthreading instructions, so that all existing hyperthreading-aware code will work straight away.

i don't see how else amd could have interfaced dual cores with the operating system without requiring numerous operating system patches. instead of interfacing with 2 virtual cpus (via hyperthreading instructions), you interface with 2 real ones (via hyperthreading instructions) - perhaps affinity and core-switching thresholds/penalties will have to be tweaked to get the most out of dual-cores.

With the HEX EBX showing as 2, I would assume that it is just as yeha said. They interface the dual cores via instructions similar to hyper threading.

An Intel dual core WITH hyper threading should read as 4 then. Assuming 2 logical CPU's for each physical = 2X2 = 4.

Since AMD has two physical cores and only has that number of 2, that would show that AMD DOES NOT have the so called "hyper threading" as we know it because it has two physical cores which already equals 2. Meaning, no logical cores, no "hyper threading."