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TriigerHappy
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 Posted: Mon Jun 15, 2009 4:28 am Post subject: Performance increase factor (single core -> multi-core) |
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if i were to switch from a 2.4 ghz single core processor
to a 2.4 dual core processor
what would be the performance increase? like would it be twice as fast? 1.5 times faster? or what?
Also is this a good deal on a computer? (http://www.newegg.com/Product/Product.aspx?Item=N82E16883227157)
if not, could you recommend a good computer with a similar price?
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TrueSoulja
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| Posted: Mon Jun 15, 2009 4:48 am Post subject: |
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it`d be almost 2 times faster because it`s dual? depends on what speed your 2nd processor runs at. you just multiply (ghz speed) by 2 and you`ll get what speed it runs total. Same for Quad core, multiply by 4. Speeds vary though.
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TriigerHappy
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| Posted: Mon Jun 15, 2009 4:50 am Post subject: |
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| I though dual core meant like, if you had a 2.4ghz dual core processor, it would really be 2 x 1.2ghz processors in one.
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WinRAR
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| Posted: Mon Jun 15, 2009 5:45 am Post subject: |
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| TrueSoulja wrote: | | it`d be almost 2 times faster because it`s dual? depends on what speed your 2nd processor runs at. you just multiply (ghz speed) by 2 and you`ll get what speed it runs total. Same for Quad core, multiply by 4. Speeds vary though. |
http://en.wikipedia.org/wiki/Megahertz_myth
read up.
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Zarr
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| Posted: Tue Jun 16, 2009 8:53 pm Post subject: |
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| TrueSoulja wrote: | | it`d be almost 2 times faster because it`s dual? depends on what speed your 2nd processor runs at. you just multiply (ghz speed) by 2 and you`ll get what speed it runs total. Same for Quad core, multiply by 4. Speeds vary though. |
No, no, stop now.
OP: It depends on the architecture of the processor along with a few other factors. For example, a 2.4GHz Pentium 4 CPU will be much, much slower than a 2.4GHz Core 2 Duo with 1 core disabled, since the latter would be much more efficient clock-for-clock.
Also depends on other factors, such as possible hyper-threading (can't recall if pentium 4s had it), whether programs are multi-threaded or not, etc etc.
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rapion124
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| Posted: Thu Jun 18, 2009 6:16 pm Post subject: |
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| An application will only take advantage of the other core if it is multi-threaded.
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