Hyperthreading._j5689_ wrote:
What the hell does hyper-threading do anyway?
Depends what you use it for, but about half as fast again-ish. Look here if you want to compare CPUs m8 http://www.tomshardware.co.uk/cpu/charts.htmlIron_Sentinel wrote:
Okay, im not that good with computer hardware so here is my question to you techies out there:
How much faster is an Intel Dual Core Processor at 2.0 GHZ compared to an Intel Pentium 4 Hyper Threading chip at 2.66 GHZ ?
Thanks in advance
Hyperthreading is a way for certain intel processors to appear to do two things at once. It only works for certain apps, and doesn't necessarily give you much of a performance boost._j5689_ wrote:
What the hell does hyper-threading do anyway?
What exact CPU are we talking about here?Intel Dual Core Processor at 2.0 GHZ
Sounds like a crappy notebook processor to me.Snipedya14 wrote:
What exact CPU are we talking about here?Intel Dual Core Processor at 2.0 GHZ
Like the 2.16Ghz Core Duo I have in mine? Id be willing to bet that it would outbench whatever you got in you desktop._j5689_ wrote:
Sounds like a crappy notebook processor to me.Snipedya14 wrote:
What exact CPU are we talking about here?Intel Dual Core Processor at 2.0 GHZ
Sorry to double post, but I missed this.EricTViking wrote:
Hyperthreading is a way for certain intel processors to appear to do two things at once. It only works for certain apps, and doesn't necessarily give you much of a performance boost._j5689_ wrote:
What the hell does hyper-threading do anyway?
Hyperthreading is *like* having to processors in your computer. Dual Core *is* having two processors in your computer ;-)
I was just trying to explain it in a way that people understand.Snipedya14 wrote:
Sorry to double post, but I missed this.EricTViking wrote:
Hyperthreading is a way for certain intel processors to appear to do two things at once. It only works for certain apps, and doesn't necessarily give you much of a performance boost._j5689_ wrote:
What the hell does hyper-threading do anyway?
Hyperthreading is *like* having to processors in your computer. Dual Core *is* having two processors in your computer ;-)
Hyper Threading is not like having two processors. It allots a small amount of CPU clock cycle to another thread. THere is nothing physical, just a sofware change.
Dual cores is however, is not two CPUs. Why? Dual cores share the FSB, etc. They share a bank of memory as well.
Ah but you cant argue that a Dual Core Opteron or Xenon setup will yield better mutli-threaded performance than a Dual Core Counterpart.EricTViking wrote:
I was just trying to explain it in a way that people understand.Snipedya14 wrote:
Sorry to double post, but I missed this.EricTViking wrote:
Hyperthreading is a way for certain intel processors to appear to do two things at once. It only works for certain apps, and doesn't necessarily give you much of a performance boost.
Hyperthreading is *like* having to processors in your computer. Dual Core *is* having two processors in your computer ;-)
Hyper Threading is not like having two processors. It allots a small amount of CPU clock cycle to another thread. THere is nothing physical, just a sofware change.
Dual cores is however, is not two CPUs. Why? Dual cores share the FSB, etc. They share a bank of memory as well.
But if you're up for it, hyperthreading is not a software change as windows is already a fully pre-emptive multitasking operating system. Any time slicing and thread scheduling is carried out by Windows and not the CPU. Hyperthreading is actually additional hardware circuitry on the CPU that (under certain code conditions) allow two threads to appear to execute at the same time. Hence it is *like* two CPUs.
Dual Core is two CPUs, but they are both on the same core. You get two CPUs on one chip. This is no different to a dual processor system where both CPUs still share resources (memory, HDD, buses etc). Unless you're talking dual Opterons where each CPU may have it's own bank of RAM. So Dual Core *is* two CPUs, they are just both on the same physical chip.
Definately. My 2.2GHz Pentium 4 is a heavily outdated piece of shit, I can't do any better until I get a new computer which will not be for a while.Snipedya14 wrote:
Like the 2.16Ghz Core Duo I have in mine? Id be willing to bet that it would outbench whatever you got in you desktop._j5689_ wrote:
Sounds like a crappy notebook processor to me.Snipedya14 wrote:
What exact CPU are we talking about here?
No, there's a lot of factors that go into it m8.Snipedya14 wrote:
Ah but you cant argue that a Dual Core Opteron or Xenon setup will yield better mutli-threaded performance than a Dual Core Counterpart.EricTViking wrote:
I was just trying to explain it in a way that people understand.Snipedya14 wrote:
Sorry to double post, but I missed this.
Hyper Threading is not like having two processors. It allots a small amount of CPU clock cycle to another thread. THere is nothing physical, just a sofware change.
Dual cores is however, is not two CPUs. Why? Dual cores share the FSB, etc. They share a bank of memory as well.
But if you're up for it, hyperthreading is not a software change as windows is already a fully pre-emptive multitasking operating system. Any time slicing and thread scheduling is carried out by Windows and not the CPU. Hyperthreading is actually additional hardware circuitry on the CPU that (under certain code conditions) allow two threads to appear to execute at the same time. Hence it is *like* two CPUs.
Dual Core is two CPUs, but they are both on the same core. You get two CPUs on one chip. This is no different to a dual processor system where both CPUs still share resources (memory, HDD, buses etc). Unless you're talking dual Opterons where each CPU may have it's own bank of RAM. So Dual Core *is* two CPUs, they are just both on the same physical chip.
Agreed there. The old netburst days are over.EricTViking wrote:
No, there's a lot of factors that go into it m8.Snipedya14 wrote:
Ah but you cant argue that a Dual Core Opteron or Xenon setup will yield better mutli-threaded performance than a Dual Core Counterpart.EricTViking wrote:
I was just trying to explain it in a way that people understand.
But if you're up for it, hyperthreading is not a software change as windows is already a fully pre-emptive multitasking operating system. Any time slicing and thread scheduling is carried out by Windows and not the CPU. Hyperthreading is actually additional hardware circuitry on the CPU that (under certain code conditions) allow two threads to appear to execute at the same time. Hence it is *like* two CPUs.
Dual Core is two CPUs, but they are both on the same core. You get two CPUs on one chip. This is no different to a dual processor system where both CPUs still share resources (memory, HDD, buses etc). Unless you're talking dual Opterons where each CPU may have it's own bank of RAM. So Dual Core *is* two CPUs, they are just both on the same physical chip.
Interestingly enough I have just been speccing up some of the new Dual Core Xeons, 5000 & 5100 series. The 5100 series start at 1.6GHz but they go like stink. Goes to prove there's more to it than Ghz these days.
I don't think that's the case. Pentium 4s are dynamic multiple issue processors (superscalar). Hyperthreading is an architecture extension that builds on this idea. What this means is that while one instruction is being executed another, that is likely to follow it, is executed simultaneously in another ALU. Branch prediction is used to determine which instructions are likely to be executed next.EricTViking wrote:
I was just trying to explain it in a way that people understand.Snipedya14 wrote:
Sorry to double post, but I missed this.EricTViking wrote:
Hyperthreading is a way for certain intel processors to appear to do two things at once. It only works for certain apps, and doesn't necessarily give you much of a performance boost.
Hyperthreading is *like* having to processors in your computer. Dual Core *is* having two processors in your computer ;-)
Hyper Threading is not like having two processors. It allots a small amount of CPU clock cycle to another thread. THere is nothing physical, just a sofware change.
Dual cores is however, is not two CPUs. Why? Dual cores share the FSB, etc. They share a bank of memory as well.
But if you're up for it, hyperthreading is not a software change as windows is already a fully pre-emptive multitasking operating system. Any time slicing and thread scheduling is carried out by Windows and not the CPU. Hyperthreading is actually additional hardware circuitry on the CPU that (under certain code conditions) allow two threads to appear to execute at the same time. Hence it is *like* two CPUs.
Dual Core is two CPUs, but they are both on the same core. You get two CPUs on one chip. This is no different to a dual processor system where both CPUs still share resources (memory, HDD, buses etc). Unless you're talking dual Opterons where each CPU may have it's own bank of RAM. So Dual Core *is* two CPUs, they are just both on the same physical chip.
They tend to have their own memory on chip too. Each core has it's own registers and cache memory and can work independently. It's very close to having 2 physical CPUs. Much closer than a superscalar CPU like the P4, which just has multiple ALUs.Snipedya14 wrote:
Dual cores is however, is not two CPUs. Why? Dual cores share the FSB, etc. They share a bank of memory as well.
Last edited by Bertster7 (2006-10-16 08:16:48)