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What CPU is this?

post #1 of 9
Thread Starter 
It show it is i5-2410M but it has 4 cores and it runs @ 2,7GHZ without no OC. Any ideas guys? The laptop is Dell Vostro 3350.
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post #2 of 9
It is what cpu-z is saying, and you don't have 4 cores, you have 2. You have 4 threads though. As for 2.7ghz, it probably was running in turbo mode, where it changes the multiplier when it needs to use more juice.
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post #3 of 9
Theres only 2 cores, 4 threads which means that it has hyper threading and the reason its at speed could be its overclocked through the bios or much more likely is that its using turbo boost, but thats kind weird seeing as theres only 7% cpu usage. Regardless i don't see much disparities.
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post #4 of 9
Thread Starter 
So hyper threading is like cloning physical cores?
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post #5 of 9
That's the thing about Turbo Boost, it's not that the CPU runs at one of either 2.3 or 2.9, it jumps and settles constantly according to the load, and you're not always seeing the utilization that leads to a spike or dip, since the time slices are so short. Intel has a utility that will monitor Turbo Boost in realtime but it's not all that interesting when you're used to seeing CPU-Z.

Also, if you're ever bored and feel like looking up CPU specs, ark.intel.com is a nice timesink.
Quote:
Originally Posted by johhu12 View Post

So hyper threading is like cloning physical cores?
Not exactly; hyperthreading basically presents each core as 2 CPUs to a hyperthreading-aware OS, so the OS will send instructions to each CPU when applicable.
Edited by roleki - 1/24/12 at 4:04pm
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post #6 of 9
Thread Starter 
So what is the approximate performance increase in games with HT on?
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post #7 of 9
Quote:
Originally Posted by johhu12 View Post

So hyper threading is like cloning physical cores?
No it's like you have 2 physical cores then 2 virtual cores. So if you're running an application that can use 4 threads the first two will go onto core 0 and core 1 then the other two will find pauses/holes in the cores and throw more work in.

Edit: You can sometimes lose performance in games and there's been a lot of complaints about stuttering in BF3 with it on.
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post #8 of 9
Thread Starter 
Alrighty. REP+ who gave me a helpful answers.
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post #9 of 9
Quote:
Originally Posted by johhu12 View Post

So what is the approximate performance increase in games with HT on?

It depends; if the game is multi-threaded, you get the benefit of X threads executing in parallel instead of waiting their turn in line. That might result in faster frame rates or prettier pictures, or both, depending on how the developer is using that capability. Usually, you see the most benefit from hyperthreaded apps that churn out the same instruction billions of times, i.e. encoding or decoding multimedia.
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