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Windows 7: Core 2 CPU Performance

20 Jun 2015   #1
AL7HH

Windows 7 Ultimate x64
 
 
Core 2 CPU Performance

I currently have an Intel Core 2 Duo E8400, clock 3.000 GHz, 6M cache. I am contemplating buying an Intel Core 2 Quad Q9300, clock 2.5 GHz, 6M cache. Both CPUs have a 1333 GHz bus speed. Many CPU performance sites rate the Quad as being considerably faster, despite the lower clock frequency. I would like your opinion on this. Thank you.


My System SpecsSystem Spec
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20 Jun 2015   #2
carwiz

Windows 7 Pro-x64
 
 

ARK | Compare Intel® Products

Neither has Hyper-Threading but comparing brut processing power;
4 x 2.5GHz = 10
2 x 3.0GHz = 6

The Quad Core gives a 67% increase in processing power. On the flip side, it's eight year old technology.

What is the PC used for?
My System SpecsSystem Spec
21 Jun 2015   #3
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

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21 Jun 2015   #4
GokAy

Windows 7 Ultimate x64 SP1
 
 

I would say performance would be affected by how many cores your apps/games are using. If limited to 1-2 cores, your old CPU should over-perform.
My System SpecsSystem Spec
21 Jun 2015   #5
Lava King

Windows 7 Home Premium x64
 
 

I have done almost exactly what you propose, I went from a Core 2 Duo E8500 (3.1 GHz) to a Core 2 Quad X9650 (3.0 GHz).

If your most commonly used applications utilize only 1 or 2 threads, you will see an overall slowdown at the stock speed (2.5 GHz) of the Q9300.

However, if your application uses all available threads, you should see a speed increase.

I agree with AddRAM, go for the Q9650 or QX9650 (the only difference being that the Extreme version is unlocked for easy OverClocking) if your motherboard can handle it. Either are available on Ebay, but be aware that they still carry a bit of a premium price despite their age.

I ran the X9650 (overclocked to 3.8 GHz) for a year or so before succumbing to the siren song of the Haswell-E

In summary, it depends a lot on what applications you are running as to whether you'll realize a net increase in performance by going with the Q9300.
My System SpecsSystem Spec
21 Jun 2015   #6
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I would stay with the 3GHz duo core. I have a Q6600 @ 2.4GHz on this system and I am not impressed. At the end of the day it is a 2.4GHz duo core because most programs do not use all 4 cores.
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 Core 2 CPU Performance




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