So sánh e8400 và q8400

XEON là xài cho mấy trăm bản, còn 2 cái kia thì tùy bạn xài cái nào cũng được. E là 2 nhân thì phải, còn Q là 4 nhân vậy thì theo tui nên chọn Q hơn là E.

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More cores More threads Newer Much lower typical power consumption Higher clock speed Much better performance per watt Much better overclocked clock speed [Air] Supports trusted computing Much lower annual home energy cost Much lower annual commercial energy cost Higher Maximum operating temperature Better overclocked clock speed [Water]

4	vs	2	Twice as many cores; run more applications at once
4	vs	2	Twice as many threads
Apr, 2009	vs	Jan, 2008	Release date over 1 years later
52.81W	vs	135.97W	2.6x lower typical power consumption
3 GHz	vs	2.66 GHz	Around 15% higher clock speed
1.83 pt/W	vs	0.94 pt/W	Around 95% better performance per watt
4.22 GHz	vs	3.48 GHz	More than 20% better overclocked clock speed [Air]
Yes	vs	No	Somewhat common; Allows for safer, more reliable computing
15.66 $/year	vs	51.39 $/year	3.3x lower annual home energy cost
56.94 $/year	vs	130.79 $/year	2.3x lower annual commercial energy cost
72.4 °C	vs	71.4 °C	Almost the same
4.23 GHz	vs	3.91 GHz	Around 10% better overclocked clock speed [Water]

Intel Core2 Quad Q8400 Report a correction

Intel Core2 Duo E8400 Report a correction

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Mini Review

Intel Core 2 Duo E8400 advantages

Intel Core 2 Quad Q8400 advantages

E8400 vs Q8400 estimated performance

The charts in the table below demonstrate performance of Core 2 Duo E8400 and Core 2 Quad Q8400 CPUs. Results for Core 2 Duo E8400 were determined based on a number of tests. Performance numbers for Core 2 Quad Q8400 were approximated from benchmark results of other processors with the same core and microarchitecture. As a note, this estimate has greater error of margin than results obtained using real-world benchmarks. Additionally, this is an averaged performance, and the displayed results may differ from results, that you may receive in individual tests.
- Intel Core 2 Duo E8400 - Intel Core 2 Quad Q8400

E8400 vs Q8400 specifications comparison

The graphs below show the difference between Intel E8400 and Intel Q8400 most important features. These characteristics, as well as an IPC [instructions per cycle] number, determine how well a microprocessor performs.

The number of cores / threads 5 4 3 2 1 0 2 4 Higher is better	Operating frequency 4 3.2 2.4 1.6 0.8 0 3GHz 2.67GHz Higher is better
- Intel Core 2 Duo E8400 - Intel Core 2 Quad Q8400
Thermal Design Power 110 88 66 44 22 0 65W 95W Lower is better

Detailed side by side comparison of Core 2 Duo E8400 vs Intel Q8400 specs can be found in the Specifications section below. Much more detailed comparison of low level features of both CPUs is located in the CPUIDs section.

Pros and Cons summary

Core 2 Duo E8400		Core 2 Quad Q8400
General recommendations:		General recommendations:
Drawbacks:		Drawbacks:

Similar processors

Core 2 Duo E8400		Core 2 Quad Q8400
Intel Q8400 vs E8300 Intel Q8400 vs E8500 Intel Q8400 vs E8600		Intel E8400 vs Q8300 Intel E8400 vs Q8400S Intel E8400 vs Q9250

Similar processors use the same socket and architecture as Intel Core 2 Duo E8400 and Intel Q8400.