Hyperthreading...

Never occurred to me before to ask, but how do I know for sure if anything is using the hyperthreading? I have a P4 with hyperthreading. How do I know if is enabled and being used? Thanks.

 

IIRC, Device manager will show two CPUs as well.

 

alright, maybe we're on to something. Where in device manager does it display cpu? How do I enable hyperthreading? I don't think it is. In performance, only shows 1 processor. I checked bios and says hyperthreading enabled.

Thanks for all the help

 

Here is my device manager:

 

Kinda bugging me now that this isn't working.

Here are my system specs:

CPU: Intel Pentium 4 3.0E Prescott 800MHz FSB Socket 478 Processor w/hyperthreading

RAM: 1) 512MB DDR 400mhz
1) 512MB DDR 333mhz

Motherboard: ASRock P4V88 Socket 478 VIA PT880 ATX Intel Motherboard
Supports FSB800MHz processor, Prescott Ready and H-T Technology
Supports DDR400 and Dual Channel Technology
Hybrid Booster - ASRock safe overclocking
SerialATA 1.5Gb/s, RAID 0,1,JBOD, SATA HDD_Hotplug
AGP8X, 5.1-Ch Audio, 10/100 Ethernet LAN
ASRock I/O Plus: 6 ready-to-use USB2.0 ports

Video Card: CHAINTECH SA5900X Geforce FX5900XT 128MB DDR AGP 4X/8X

Hard drive: 1) 60GB 7200rpm ata/100 2mb cache
1) 200GB 7200rpm ata/133 2mb cache

Sound Card: Maddog Entertainer 7.1dsp sound card

 

just hit f2 or f3 or f5 or whatever your bios button is at launch then go to something like processor it'll ask if you want HT enabled, go to the device manager and it should show two of your processor.

 

did that, and it says HT is auto. Only options are auto/disabled.

 

Just upgraded the bios today v1.80. I can't put my finger on it, other than I dunno why it says auto as option for hyperthreading rather than enabled. It only says auto/disable as options.

 

You know, you never mentioned what OS you are running.

 

Rofl...there is a story behind that one.

Its my wireless NIC and it keeps locking me up while online/during games. So I am waiting for Netgear to release a driver update before I use it again, hence the lack of installed driver and disabled card

 

Haha, sorry WindowsXP pro.

 

Hmmm...you didnt happen to upgrade your CPU w/out reinstalling XP, did you?

 

nope. In fact, for the heck of it reinstalled xp today. Maybe after I upgrade back to service pack 2 it will detect the hyperthreading?

 

Maybe.

This is totally at your own risk, but I found this:

http://mindfulmusings.net/weblog/2004/10/16/enable-hyperthreading-after-upgrading-motherboard/

 

I found that, thank you. I'm at work right now. Am going to try in 2 hours on my lunch break.

 

Tell us how it works out, I might have to bookmark that blog

 

are you sure it's worth going through all the trouble, I have it disabled and I have no difference between the two and in fact I heard that HT could be bad for games.

 

Hyperthreading is a mixed bag, Over Rated too.
Some apps will see increased performance some decreased, best bet is test your self, then you can simply disable or enable as needed.

 

Here is what you should see if HT is enabled in the OS:

 

Note the two CPU graphs: