C2D E4300: only one core?

[Hessi]

Hi,

my system runs well since several months. Now I realized, system profiler shows a core 2 solo. Activity shows two diagrams for cpu – could it be the HT-"core"?

Xbench-results are a little bit slower than similar machines.
Cinebench shows also only 1 core, CPU-result is 1.05 – a little bit slow for a E4300 running with 2 GHz, isn't it?

Should I install AppleSMBIOS? Which version? I'm confused! There are soooo many!

E4300
GMA 950
ICH... whatever
ASRock "ConRoe"

TIA
Regards
Michael