1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

    Dismiss Notice

Twice the power ?

Discussion in 'CPUs' started by movingtables, 27 Mar 2006.

  1. movingtables

    Mobster

    Joined: 11 Feb 2004

    Posts: 3,308

    Location: TheWirral

    for the first time in my computer hobby i've fallen behind in my processor power knowledge.

    to cut a long stor short:

    Q) does a dual core processor meen double the power?
    for example is a dual core pentium 3 gig the equal to 6 gighz power in real world terms ?

    and a dual core pentium4 3 gig is faster than my single core pentium4 (3.4 gig) processor ?
     
  2. ByteJuggler

    Hitman

    Joined: 5 Jun 2005

    Posts: 988

    Location: Leicestershire

    In a word: "Potentially."

    That is, for a task that is perfectly parallelizable into 2 threads, a dual core cpu will in effect be as good as having a single core at double the speed.

    However, in practice you'll often not get "twice the power" since many programs are not designed to be multi threaded, and even when they are, sometimes the concurrency is limited (or other factors come into play), so the actual benefit might be substantially less than twice. For independent multi-tasking tasks however you can already often see near "twice the power."

    So, it depends...
     
  3. smids

    Soldato

    Joined: 18 Dec 2004

    Posts: 6,660

    Location: London/Kent

    On average it is like 1.5x the power for the reasons above. Hardly ever will you get double, and on things that are supposed to be coded, it is closer to 1.5x than 2, though some programs are better than others. It really is hit and miss.

    BTW movingtables, loving the sig - we all know what today is :D.
     
  4. movingtables

    Mobster

    Joined: 11 Feb 2004

    Posts: 3,308

    Location: TheWirral

    aww poor mr kent popped his cloggs lol..

    on topic. from what you guys have said. that 2 X 3gig dual processor is faster than my 1 X pentium4 3.4 gig processor.
    not doubly fast but on the whole around 1 ½ times faster than a single processor. still faster i guess. so is dual processors here to stay ???
     
  5. smids

    Soldato

    Joined: 18 Dec 2004

    Posts: 6,660

    Location: London/Kent

    I'm not overly impressed with Monday tbh, but I gotta say, that crash was good - the blood was funny (no, I'm not a sadist but it was a pretty good effect) however a number of flaws in the actual episode.

    Anyway, on topic - yes, it is definitely here to stay. Lots of things are becoming increasingly threaded to take advantage of dual processor/dual core systems. UT2007 is apparently going to be completely multithreaded offering a huge performance increase over single core processors.
    The other thing about dual cores etc is that things feel very responsive. There is no slowdown when doing something else. A DC + 2GB RAM = a very fast, very responsive system.
     
  6. TooNice

    Hitman

    Joined: 7 Mar 2006

    Posts: 545

    It's like SLI, RAID-0 etc. etc.

    The potential is usually close to 2x, but in practice it is not quite that.

    Although, I do think dual core CPU makes a bit more sense considering that your PC do a lot of things in the background all the time.. so an extra core is potentially more useful.

    (Likewise, two monitors double what I can see on screen, but not double my productivity :D)
     
    Last edited: 29 Mar 2006