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Disable Hyperthreading? - Page 3

post #21 of 30
Quote:
Originally Posted by shajbot View Post
HT is an added feature after the P4 release. So it actually intended to raise performance.
Yeah earlier revisions of the Pentium $ range did not include Hyperthreaded architecture.

Personally I always left it on and never noticed any performance difference when disabled either
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post #22 of 30
sorry to hijack, but its along the same lines.

as some of ya know, I got a 533FSB 2.53 Northy that OC`s to 3.40
I may have the opertunity to purchase a 2.8 Prescott

would it be worth doing?
Thinking of the HyperThreading and 1MB L2 Cache over no HT and 512KB Cache?
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post #23 of 30
I was just curious as to the "why?" sombody would disable it in the first place.
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post #24 of 30
No use to it, P4 is old, at least, just like me, try to get the most out of it, and hyperthreading just makes data transfered in your core faster, comparable to dual-core but slower. Do not disable it because as you play, your CPU may take care of backgroud processes.
    
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post #25 of 30
my understanding is that dual core isn't really for multitasking but rather for applications that are designed for SMP. or where one application that does information in parallel. with the ht on doesn't it also only limit one application to only 50% cpu power? if that is the case and your playing a game you could only use half your potential.
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post #26 of 30
From my experience on teh css benchmark test it gave me 20 more fps..

but in windows things like winamp loaded slower when i was using firefox, so i just re-enabled it
post #27 of 30
WHY DISABLE IT? Seriously? Lets say that it gain 30%+ fps in multi thread games (according to intel).
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post #28 of 30
I tested HT on and off using a multithreaded analysis tool at my previous job...to my surprise, there was no difference with it on or off.

This may not apply to dual core processors. The processor I was using was an old 3.0 P4 single core.
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post #29 of 30
Quote:
Originally Posted by algje View Post
I have a P4 3GHz processor with hyperthreading

My question is: should i disable hyperthreading if i want to play a heavy game..to gain peformance .... cus I dont realy care if i can work multiple processes better at ones with Hyperthreading on.

Does anyone have experiance with turning off hyperthreading ?
Here's a novel idea...

Why don't you just disable it and see what happens?????
    
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post #30 of 30
I was thinking of why HT may be slower. Because todays games are coded to work with 2 cores not 1 and a vritual. So the game put 70% load on the cpu and things that the cpu is a dual core so it puts 70% cpu load on the second cpu wich dosent exist. So the cpu will work at 140% and thats why games slows down. What do you guys think?
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