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Dual core questions

post #1 of 12
Thread Starter 
OK when a dual core proc is rated at say 2.2ghz, does that mean that each core runs at 2.2 ghz? or just 2 procs running at 1.1ghz? And when testing the stability of a proc through superpi, do I have to run two instances? or just one? And that question goes for any stressing app, can you give me a list of some that require you to run two instances of?

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post #2 of 12
I can't answer all the questions you have there but I am quite sure a dual core is two physical cores, each at 2.2GHz. Orthos is what is used by most with dual core for stability testing because it utilizes both cores but so far as other apps go I can't tell ya in entire confidence.
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post #3 of 12
Yes each core runs at 2.2

Yes you have to run 2 instances to max each core..

Get a program that does it automatically like OCCT (30 min stress test) or Orthos..
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post #4 of 12
You could always run two instances of folding...
But why would you want to run two instances of a program when Orthos will do it for you?
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post #5 of 12
Dual-cores are essentially 2 CPU's. EACH CPU runs at the rated speed.

For instance, a Pentium D, the first dual-core, is LITERALLY two Pentium 4's slapped together. A Pentium D Presler is equivelant to two Pentium 4 Prescott's running together. Hyperthreading is something else entirely, for simplicity's sake, ignore it right now.
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post #6 of 12
Thread Starter 
Ok thanks guys, i'm glad to know that my 4200 has 2 2.2ghz cores. But right now I'm overclocking, see the thread in AMD general. I have just failed OCCT at 28m 11s, but when I start the program it says load driver failure, I click ok and then it is fine. Is this a problem with instability that is causing this, or a program problem? thanks I'll try orthos, how long should I run it to consider my proc stable to up the fsb a little more? thanks

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post #7 of 12
A dual core processor will only run at the rated speed (2.2 ghz in this case) for applications that only use a single core (almost all applications).
More demanding applications are coded to use both cores and will run faster than a single core 2.2 ghz processor.

A 2.2 Ghz dual core does NOT equal a 4.4 ghz single core directly...(only in certain applications), so don't get a slow dual core assuming that it will always be twice as fast!
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post #8 of 12
Quote:
Originally Posted by CuriouslyHigh View Post
For instance, a Pentium D, the first dual-core, is LITERALLY two Pentium 4's slapped together. A Pentium D Presler is equivelant to two Pentium 4 Prescott's running together.
the smithfield and the cedar-mill cores were based on the prescott and the presler core was a die shrink to 65nm
post #9 of 12
Quote:
Originally Posted by bruestle2 View Post
A dual core processor will only run at the rated speed (2.2 ghz in this case) for applications that only use a single core (almost all applications).
More demanding applications are coded to use both cores and will run faster than a single core 2.2 ghz processor.

A 2.2 Ghz dual core does NOT equal a 4.4 ghz single core directly...(only in certain applications), so don't get a slow dual core assuming that it will always be twice as fast!
In the defense of dual-cores, eventually multi-threaded programs will make this a lot better.

But again, a dual-core will never truly shine until you start multitasking. It's not how fast you do things you already did, it's the new things you can do.

A single-core conroe L, or any good athlon 64 could browse the web and whatnot just as fast as this thing can. But I can encode DVD, run a virus sweep, and play demanding games AT THE SAME TIME.
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by bruestle2 View Post
A dual core processor will only run at the rated speed (2.2 ghz in this case) for applications that only use a single core (almost all applications).
More demanding applications are coded to use both cores and will run faster than a single core 2.2 ghz processor.

A 2.2 Ghz dual core does NOT equal a 4.4 ghz single core directly...(only in certain applications), so don't get a slow dual core assuming that it will always be twice as fast!
Thanks, that helped!

But another question, when I run orthos, what mode should i run it in? Just stress cpu, stress cpu and some ram? blend? thanks

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