Hi there, I've built my computer, all is running fine but its just started showing my 3ghz P4 as two seperate 1.5ghz processors instead of 1 3ghz one!? Anyone know what would cause this and how to get it back to normal? Thanks :) Daniel.

Does the processor support Hyper-Threading? That could be a clue. The concept of it is to act as if there were two CPU's instead of one. You can disable it via BIOS. You don't need it enabled for the most part unless you do graphic intensive programing.

"You don't need it enabled for the most part unless you do graphic intensive programing." However, it doesn't hurt to leave it on as it will help when you are doing several things at once, well thats the theory anyway. Computer nut since 1985 and still loving it...

1) HyperThread shows 2 CPUs the same speed as 1. i.e. P4 3Ghz has two CPUs at 3 Ghz each. 2) HT should be enable at all time; there is no logic in not to after you paid for the feature.

Dazzuko. On bootup to post you should see 'Hyper threading enabeled'. This will let you know wether or not you have the feature selected in the BIOS. It sounds like this but the fact that it's devied your CPU into 2 is a bit of a mystery. As lazyman stated, whatever the speed of your CPU is multiplied by two although this isn't acually what is happening because your CPU would go up in ashes. Hyperthreading tricks your PC into thinking it has two CPU's and utilises it as if it were a dual CPU system. Check your bios first. Look under Hyperthreading, there may be some function there that we're all unaware of. Let us know how you get on. GaryM Chaintech 9PJL Appogee 800FSB P4 2.8 HT Sparkle Platinum 6800GT 256MB 4*256 KINGSTONE PC3200 dual 40 gig IDE 120 Gig sata DC10+ Video card

Doesn't HT benefit only if applications are written to use it? HT does not necessarily mean better performance. Good Luck and Happy Computing, Kailas Shastry, Sempron 2400 underclocked to 1GHz...just for the heck of it! MSI KT266VM DDR 256MB

This is one of those subjects where yo think "Do I, or don't I' The point is, it won't decrease performance with it switched on and you probably won't know if or when it is using it so you might as well leave it on if your PC can do it. There is loads of documentation the MS website about this and I did read it some time ago but off the top of my head I can't recall anything about splitting processor speed in half. GaryM Chaintech 9PJL Appogee 800FSB P4 2.8 HT Sparkle Platinum 6800GT 256MB 4*256 KINGSTONE PC3200 dual 40 gig IDE 120 Gig sata DC10+ Video card