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CPU editions difference !!!

post #1 of 14
Thread Starter 
hello everyone....


while I was surfing the asus website to check with it whether my motherboard bios version accepts the E8400 CPU I found 2 editions of that CPU which are as the following : the first one : Core 2 Duo E8400 (3.00GHz,1333FSB,L2:6MB,65W,rev.E0 which requires the bios version 0403
and the other one is : Core 2 Duo E8400 (3.00GHz,1333FSB,L2:6MB,rev.C0) which requires the bios version 0315.

the question is : is there is different editions of the E8400?? and if so which one is better and how does each one differs from the other one , and which one is better and how to recognize it on the package when I want to but it ???


best regards
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my humble epic
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post #2 of 14
it should say on the box version c0 or e0. as for the rest i am unsure.
post #3 of 14
E8400s came in C0 steppings, now they come in E0. On average, E0 chips clock higher with less voltage, so these are more desireable.

I would advise updating to the latest BIOS for your board, then look for an E0 chip. You can tell these because on the package the S-SPEC will be SLB9J....the older C0 chips are SLAPL

Also, pretty much all chips made after Week 20 of 2008 (Q820) are E0...there are a very, very few that aren't....but anything week 21 and after is e0 for sure.
    
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post #4 of 14
Thread Starter 
[QUOTE=gurusan;5119146]E8400s came in C0 steppings, now they come in E0. On average, E0 chips clock higher with less voltage, so these are more desireable.

well.... do you mean that the E0 runs faster than the C0, or they both are at the same speed but the E0 needs less voltage than the C0 only ???

and do you think they differ when it comes to prices ????

best regards
my humble epic
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my humble epic
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post #5 of 14
Quote:
Originally Posted by the magical me View Post
well.... do you mean that the E0 runs faster than the C0, or they both are at the same speed but the E0 needs less voltage than the C0 only ???

and do you think they differ when it comes to prices ????

best regards
The E0 steppings generally overclock further. They are the same price.
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post #6 of 14
Thread Starter 
Quote:
Originally Posted by br3nd064 View Post
The E0 steppings generally overclock further. They are the same price.
as far as I know that the E8400 runs at 1333 MHz of FSB, and I think I can easly overclock it to 1600 MHz of FSB when the required cooling and power supplying are ready, so do you mean I can even exceed the 1600 FSB to anything further with E0???
my humble epic
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my humble epic
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post #7 of 14
Even most C0 e8400's can exceed 1600mhz fsb. The E0's just require less voltage and usually overclock further. An average C0 will probably get to ~3.8-4.0ghz, while a E0 will probably get to 4.2-4.3ghz.
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post #8 of 14
All of the Penryn chips use these steppings (C0 or E0). The difference is overclockability. I don't know if there are multiple fabs that make them, but my E0 Q9550 came from Malaysia. It said so right on the chip, and I had read somewhere that the C0 came from elsewhere?

Bottom line: E0 is the better way to go.
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post #9 of 14
Quote:
Originally Posted by br3nd064 View Post
Even most C0 e8400's can exceed 1600mhz fsb. The E0's just require less voltage and usually overclock further. An average C0 will probably get to ~3.8-4.0ghz, while a E0 will probably get to 4.2-4.3ghz.
I've not heard of a C0 chip not doing 4ghz I had 1, but it was a poor abused ES edition
    
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post #10 of 14
I have a c0 that's at 3.8. It can do 4, but my motherboard can't.
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