what is hyperthreading? - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Overclocking and Modding
Click Here to Login
Closed Thread
 
Thread Tools Display Modes
 
Old 07-15-2007, 05:42 PM   #1 (permalink)
Ultra Techie
 
Join Date: Jun 2006
Posts: 692
Default what is hyperthreading?

wat is hyperthreading and how to i enable/disable it? does hyperthreading increase performance?
__________________

__________________
System Specs
Opteron 165 cooled by Zalman 9500A LED // DFI Lanparty UT NF4-D // Seagate Barracuda 7200.10 SATA 3.0Gb/s 320-GB Hard Drive // Sapphire X1950XT 256MB cooled by Zalman VF900 Cu LED // 2x1GB OCZ EL Plantinum // Enermax NoiseTaker 430W // Pioneer DVD & Combo Optical Drive // 20" Samsung 206BW Monitor // Logitech Z-2300 Speakers // Logitech G11 Keyboard and Microsoft Sidewinder mouse // Antec Nine Hundred Case
krazieaznboi is offline  
Old 07-15-2007, 05:46 PM   #2 (permalink)
Ultra Techie
 
Join Date: Oct 2005
Posts: 833
Send a message via ICQ to Amd2800 Send a message via AIM to Amd2800 Send a message via Yahoo to Amd2800
Default Re: what is hyperthreading?

Hyperthreading give ur pc another thread only 100mhz so not much
__________________

__________________
NEW PC : The I5-2500 3.3ghz
CPU : Intel I5-2500 @ 3.3Ghz *SandyBridge* - Ram : 8GB DDR3 1333Mhz Dual Channel - Mobo : Asus P8H67-M Pro
HDD0 : 1TB Sata 2 - GFX : ATI Radeon HD6950 2GB - Sound: Realtek 5.1 Onboard - OS1 : Windows 7 Ultimate X64

Dell Studio 1747 Laptop
CPU : Intel I7 - Q720 @ 1.66Ghz - Ram: 4GB Ram DDR3 1333Mhz Dual Channel - Mobo : Dell - HDD: 2x 500GB Sata 2 - OS1: Windows 7 Ultimate X64





Quote:
I want a processor in my brain..... Can i upgrade my ram?

Amd2800 is offline  
Old 07-15-2007, 05:47 PM   #3 (permalink)
Ultra Techie
 
Join Date: Jun 2006
Posts: 692
Default Re: what is hyperthreading?

is this only for intel or AMD too?
__________________
System Specs
Opteron 165 cooled by Zalman 9500A LED // DFI Lanparty UT NF4-D // Seagate Barracuda 7200.10 SATA 3.0Gb/s 320-GB Hard Drive // Sapphire X1950XT 256MB cooled by Zalman VF900 Cu LED // 2x1GB OCZ EL Plantinum // Enermax NoiseTaker 430W // Pioneer DVD & Combo Optical Drive // 20" Samsung 206BW Monitor // Logitech Z-2300 Speakers // Logitech G11 Keyboard and Microsoft Sidewinder mouse // Antec Nine Hundred Case
krazieaznboi is offline  
Old 07-15-2007, 06:07 PM   #4 (permalink)
Ultra Techie
 
Join Date: Oct 2005
Posts: 833
Send a message via ICQ to Amd2800 Send a message via AIM to Amd2800 Send a message via Yahoo to Amd2800
Default Re: what is hyperthreading?

Not sure .. think its intel
__________________
NEW PC : The I5-2500 3.3ghz
CPU : Intel I5-2500 @ 3.3Ghz *SandyBridge* - Ram : 8GB DDR3 1333Mhz Dual Channel - Mobo : Asus P8H67-M Pro
HDD0 : 1TB Sata 2 - GFX : ATI Radeon HD6950 2GB - Sound: Realtek 5.1 Onboard - OS1 : Windows 7 Ultimate X64

Dell Studio 1747 Laptop
CPU : Intel I7 - Q720 @ 1.66Ghz - Ram: 4GB Ram DDR3 1333Mhz Dual Channel - Mobo : Dell - HDD: 2x 500GB Sata 2 - OS1: Windows 7 Ultimate X64





Quote:
I want a processor in my brain..... Can i upgrade my ram?

Amd2800 is offline  
Old 07-15-2007, 07:01 PM   #5 (permalink)
Retired.
 
peterhuang913's Avatar
 
Join Date: Dec 2005
Location: Los Angeles, California
Posts: 8,076
Send a message via AIM to peterhuang913
Lightbulb Re: what is hyperthreading?

Quote:
Originally Posted by Amd2800 View Post
Hyperthreading give ur pc another thread only 100mhz so not much
100MHz? LMAO1!
Lets get this straight:
Hyperthreading or Hyperthreading Technology (HTT) is an "implement" by Intel for some of their line of Pentium 4's, thus giving the name Pentium 4 w/HT. There is a similar implement on AMD's side of the bargain, ironically name Hyper Transport (HT).

Hyperthreading is just a technology to give a processor two "tasking layers". This should not be confused with two cores. HT helps the computer run faster because the computer can run two thread at the same time, not just one thread. Now what is a thread? A thread is a set of instructions that a program uses to run itself.

Normally, programs have to "wait in line" to be executed. The waiting is too slow to see sometimes. HT allows two people to go through the line at the same time. Dual core processors are like having two lines with one or two people going through at the same time.

Now to real-world performance. CPUs with HT only execute programs faster if that program can run support HT, which means the program is multi-threaded. Other programs that are single threaded will not see as much of a change in speed, although there is some increase.
__________________


My computer uses 1.5A-load, .8A-idle, .65A-standby, .05A-turned off on 125V.
"The spaces between your fingers were created so that another's could fill them in."
Quote:
Originally Posted by Norcent View Post
I need to stop using the internet.
peterhuang913 is offline  
Old 07-15-2007, 07:40 PM   #6 (permalink)
Ultra Techie
 
Join Date: Jun 2006
Posts: 692
Default Re: what is hyperthreading?

On CPUZ it says my opteron has 1 core and 1 thread so does that mean I have HT enabled?
__________________
System Specs
Opteron 165 cooled by Zalman 9500A LED // DFI Lanparty UT NF4-D // Seagate Barracuda 7200.10 SATA 3.0Gb/s 320-GB Hard Drive // Sapphire X1950XT 256MB cooled by Zalman VF900 Cu LED // 2x1GB OCZ EL Plantinum // Enermax NoiseTaker 430W // Pioneer DVD & Combo Optical Drive // 20" Samsung 206BW Monitor // Logitech Z-2300 Speakers // Logitech G11 Keyboard and Microsoft Sidewinder mouse // Antec Nine Hundred Case
krazieaznboi is offline  
Old 07-15-2007, 07:42 PM   #7 (permalink)
Retired.
 
peterhuang913's Avatar
 
Join Date: Dec 2005
Location: Los Angeles, California
Posts: 8,076
Send a message via AIM to peterhuang913
Default Re: what is hyperthreading?

It should, post a CPU-z screenie
__________________


My computer uses 1.5A-load, .8A-idle, .65A-standby, .05A-turned off on 125V.
"The spaces between your fingers were created so that another's could fill them in."
Quote:
Originally Posted by Norcent View Post
I need to stop using the internet.
peterhuang913 is offline  
Old 07-16-2007, 01:36 AM   #8 (permalink)
Monster Techie
 
Brinson's Avatar
 
Join Date: Apr 2007
Posts: 1,195
Default Re: what is hyperthreading?

I have a HT cpu and STILL don't know how effective it is...anyone have a 3ghz p4 with no HT that we can benchmark against each other to see?
__________________
Antec 300 Illusion
430w Antec Earthwatts
AMD Q4 640 Propus
2x4gb Patriot DDR3 1333
750gb Seagate 7200.11 Hard Drive
Brinson is offline  
Old 07-16-2007, 01:46 AM   #9 (permalink)
Master Techie
 
uzi9mm's Avatar
 
Join Date: Dec 2004
Location: Horseheads, NY
Posts: 2,553
Default Re: what is hyperthreading?

i will give you the whole "hyper threading" thing in plain terms.

2 lanes of traffic (1 traffic cop) only 1 lane can go at a time (any given time)

Windows sends two "lanes of data or "traffic" out onto the highway. The processing point or "merging area" is managed by a hyper threading or the "police officer" he says stop to 1 lane of traffic and go to the other, he can stop and go the traffic lanes at ANY GIVEN TIME. BUT ONLY 1 LANE AT A TIME...



Now you may be wondering "this sound cool and all but it does not sound like a MAJOR performance increasing feature......"

Well you are right, on an average benchmarking matrix of non-ht vs. ht setups, sometimes the HT setup would be 2-4% maybe 5-6% faster than non-ht setups. But hey, any extra performance jumps or increases are welcomed! Back when HT when being marketed intel claimed up to 30% performance increases..... Those numbers were VERY OS and SOFTWARE dependant and rare to even come close to. Also in some areas of computing, HT would sometimes deal a blow to maximum computer efficiency and optimization.

And as peter mentioned above, to REALLY see the 5% increase (if you could notice it at all) would be in SMP (symmetrical multi-processing) programs.
__________________
INTEL i7 930
ASUS P6X58D
3x2gb Corsair Dominators
EVGA GTX 480
CORSAIR 850-HX
uzi9mm is offline  
Old 07-16-2007, 05:17 AM   #10 (permalink)
Ultra Techie
 
Join Date: Jun 2006
Posts: 692
Default Re: what is hyperthreading?

okay, now do anyone know how to enable and disable HT?
__________________

__________________
System Specs
Opteron 165 cooled by Zalman 9500A LED // DFI Lanparty UT NF4-D // Seagate Barracuda 7200.10 SATA 3.0Gb/s 320-GB Hard Drive // Sapphire X1950XT 256MB cooled by Zalman VF900 Cu LED // 2x1GB OCZ EL Plantinum // Enermax NoiseTaker 430W // Pioneer DVD & Combo Optical Drive // 20" Samsung 206BW Monitor // Logitech Z-2300 Speakers // Logitech G11 Keyboard and Microsoft Sidewinder mouse // Antec Nine Hundred Case
krazieaznboi is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:38 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.