The 'X', it's called marketing... It's quite simple, two CPUs can't work on the same operation at once. To utilize the two CPU cores, the software divides work into 'threads'. Each thread is run on a separate processor, provided the software you're running can handle this. The results are tossed together at the end.
If the software you're running can only handle threads in a serial manner, and not simulatenously, then the second CPU will be idle and not assisting the software. HyperThreading also needs multithreaded software to utilize this feature. But in this case, HyperThreading simulates a second CPU that is of lesser power than the first one. When an instruction is sent to a CPU, not always are the circuits completely utilized. With HyperThreading the unused circuits are then re-used at the same time to work on another thread of instructions. The CPU shows istself as two CPUs to the operating systems to enable this feature. --- In [email protected], "Matt" <[EMAIL PROTECTED]> wrote: > > > > So than what does the X mean ?? > > > > This isn't at all how these CPUs work. The DualCore CPUs, available > > from Intel and AMD don't give you 2x the MHz rating. (I'll explain > in > > a moment.) > > > so you saying even the 2 processors ,it really is one becuse thay > don't perform like 2 processors thay devide the work load .But it > only works if the software supports it . > > And HyperThreading only devides the work in small chunks? > > > > > > > > In addition, the MHz rating really doesn't affect computer > > performance as much as you think, many other systems come into play > to > > determine the performance and reliability of a PC. > > > AMD does not list MHz thay list a model number like AMD Athlon 64 > 3200+, AMD Athlon 64 3500,Athlon 64 4000, yes the higher the number > the better > > AMD Athlon 64 3200+, runs at 2.00 GHz > AMD Athlon 64 3500+, runs at 2.2 GHz > AMD Athlon 64 4000+ runs at 2.40 GHz > AMD Athlon 64 2800+, runs at 1.80 GHz > > More at http://www.compusa.com/products/products.asp? > N=200136+400950&Ne=400000 > > The 64 means it is a 64-bit processors .As 32-bit processing is on > its way out. > > > I don't have the money for AMD Athlon 64 X2 3800+ I need to go down > but better than Intel celeron 1.8GHz .In the future if I have the > money I will get AMD Athlon 64 X2 4800. > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/67folB/TM --------------------------------------------------------------------~-> If you have any questions or problems with any aspect of this site, please feel free to contact me directly [EMAIL PROTECTED] Please do not post personal issues directly to the group. To unsubscribe from this list, send an email to [EMAIL PROTECTED] Thank you for using A-1 Computer Tech Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/A-1-Computer_Tech/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
