Hyperthreading Technology

[William Beene]

I just got the P4 3.06ghz and I am currently running xp
pro. But i cant seem to get windows to utilize
Hyperthreading Technology, ive been using SiSoftware
Sandra Standard (32-bit x86 Unicode) to dectect my
hardware settings it seems to indicate that either my
operating system does not support it or that it is not
enabled. And if your thinking I didnt enable it in my
bios that is not the case bios sees it and has enabled
it. Well its not extreemly important that I figure out
what the problem is since the p4 is soo fast anyway but I
feel as though im not getting everything out of my
processor.

If anyone could explain what the problem is or the
solution I would be eternaly grateful.

thank you in advance
William

 

[David Jones]

If you open up Task Manager, and click the Performance
tab, do you see one or two CPU graphs?

If you see two, hyperthreading is enabled.

Did you install XP with this processor already installed?

 

[Rich]

Hi William...
Well I'm not an mvp here but I noticed that you didn't mention what type of
motherboard you are using.
If it's a VIA board or even using a VIA chipset...some of those boards that
claim hyper-threading capability do not have ANY settings in the bios for
hyperthreading support although it IS supported. My VIA (P4MA Pro533) is one
of those boards.
Also, SiS wasn't entirely accurate with my motherboard regarding my pci and
agp bus speeds. Their latest version (MAX3) indicated that my pci bus was
running at 48MHz and my agp at 188MHz (agp 2x data rate). This is impossible
because no cards can run reliably at these speeds. I don't know if intel or
SIS chipsets have these problems...but sometimes incompatibilities do arise
with benchmarking.

 

[Len]

You didn't mention whether in the properties (r-click the My Computer Icon)
then hardware, device manager if the computer is listed as a ACPI
Uniprocessor or ACPI Multiprocessor System.

This is a good indication of how XP saw your hyper threading CPU (or not).
Under processors there should also be two entries for your 3.0Ghz CPU.

I have a 2.4c 800Mhz CPU on my system and XP Pro sees it as an ACPI
Multiprocessor System - there are also the two entries in Processor applet.
In addition when I call up Task Manager (Ctrl-Alt-Del) there are two CPU
windows in the performance pain.

FYIW,
Len