I know their's a fair few these chips knocking around.

Enabled or Disabled

In the Asus i found it very unstable and occasional crash, not botherd to try in the MSI.

Whats everyone else done?

Si

Si, was the ASUS meant to support HT??

Yes. Asus P4C800 Deluxe which is for sale :)

works fine in msi, enable it.

you will see two processors in your device manager, this happens when hyper threading is enabled.

Si, you never told me you weren't using HT. OMG lol, Hyperthreading is lovely when I am gaming, needing to alt+tab out etc and still get to my other stuff very quickly.

Yeah nick, didnt like it. I found it sometimes caused the pc to crash. So its just always being off since.

Si

Yup

Works fine on my Asus P4C800 Deluxe with a 3ghz 800mb FSB P4HT - must be the build ;) - you can tell the diffrence if you have a lot of apps open and are doing intensive stuff.... Recomend em every time.

Actually the HT is a little weird. Installing some dual Xeon 2U servers today, they have come with HT enabled CPU's and Win2K Server seems to work fine still. It in fact now thinks they are 4CPU devices.... :)

Ids

Weird as I thought it was only XP SP1 that could take advantage of this. But I've heard the same from others.

From testing I've found that if the machine is going to do one task only (big number crunching jobs), then not to bother with HT as the overhead of spliting the job to run the two threads slows the overall progress down by a few percent.

However, if you are doing multi-tasks, i.e desktop setup or gaming/internet machine, then HT works really well.

Got a twin Xeon under my desk and task manager shows 4 processors :D Even better I can switch between work stuff and a game of MOHAA without trouble. ;)

Cheers

Ian