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E6400 equal to a E6700X6800

post #1 of 18
Thread Starter 
can everyone who has a E6400 tell me how much they managed to get out of the E6400's?

i read that you can OC a 6400 to equal that of a 6700 or a X6800, is this possible, and if it is, with what mobo?
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post #2 of 18
Quote:
Originally Posted by douglash View Post
can everyone who has a E6400 tell me how much they managed to get out of the E6400's?

i read that you can OC a 6400 to equal that of a 6700 or a X6800, is this possible, and if it is, with what mobo?
I don't have an E6400, but, to answer your questions. Yes, it is possible. The Asus P5B Deluxe.

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post #3 of 18
Thread Starter 
what about the 965P-DS3 board? do you think it will overclock just as well?
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post #4 of 18
You can overclock it very high, but it won't compare to the 6600 6700 or X6800 simply because they have twice the L2 cache
 
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post #5 of 18
Quote:
Originally Posted by douglash View Post
what about the 965P-DS3 board? do you think it will overclock just as well?
To be honest, I don't know for sure. Based on everything I've read on this forum though, I'd have to say that the Asus board would be better than the Gigabyte one, although from memory I think the Gigabyte board is cheaper.

I'd have to say yes, you'd probably be able to take an average E6400 to 3GHz or so on a DS3, I'm sure I've read that people have done so and probably exceeded 3GHz. Still, the price difference isn't all that much between a DS3 and a P5B Deluxe I think? What is it, 20% or so? If you're going to invest in a overclocking board, you may as well go for one of the best current boards with a very good reputation for getting Core 2 Duos up to high o/c's.

If cash is an issue, then a DS3 should make a very good board for o/c'ing C2Ds. It's not like its a bad board after all. It's just that current thinking among o/c'ers (on this forum) suggests that the P5B Deluxe is better... Although by how much I'm not sure.

I've only just ordered my P5B Deluxe. It hasn't even arrived yet! I considered a DS3, but I've got water cooling so I want to take my C2D as far as I can and I'm pretty confident that the P5B Deluxe will help me do that .

If you haven't already, check out some reviews before making a decision. I think that either board should be capable of taking an E6400 to E6700/X6800 speeds without too much trouble, if you get a CPU with some decent silicon.

Quote:
Originally Posted by Mhill2029 View Post
You can overclock it very high, but it won't compare to the 6600 6700 or X6800 simply because they have twice the L2 cache
Not strictly true. An E6400 @ 3.4Ghz (for example) will out-perform an E6700 @ it's stock speed of 2.66GHz. Also, because the multiplier on the E6400 is lower than an E6700, when o/c'ed, the E6400's FSB will be higher than the E6700's, even at the same clock speed. The higher FSB (assuming RAM is @ 1:1) should help the E6400 quite a bit and enhance overall system speed as well.

If you dropped the multi on an E6700 to match that of an E6400 and o/c'ed them both to the same speed, the E6700 would be faster, because of the larger L2 cache. However, benchmarks have shown (so far) that the extra cache it's self only equates to around 3% average better performance between the CPUs. So, an "imaginary" E6700 with 2MB L2 would only have (on average) 3% less performance than an E6700 with 4MB L2. Of course, in some apps, the extra cache can account for up to 10% extra performance...

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post #6 of 18
most E6400s can go a lot farther than 2.66-2.93 Ghz. Good motherboards include the Asus P5B Deluxe, Gigabyte DQ6, Gigabyte DS3, Abit AW9D-Max.
post #7 of 18
Thread Starter 
what do you mean when you say decent silicon?
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post #8 of 18
Quote:
Originally Posted by douglash View Post
what do you mean when you say decent silicon?
Better quality. Which means fewer impurities, less heat output from standard and o/c'ed operation. Also, generally, less voltage needed to obtain higher o/c's. Certain weeks of manufacture are supposed to be better than others, because supposedly higher quality (more pure) silicon was used in those particular weeks of manufacture.

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post #9 of 18
Bare in mind that when people say the E6400 is 'equal' to a X6700, they mean that you can overclock the E6400 to match a STOCK X6700.

And overclocked E6400 would not be able to match an overclocked X6700.
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post #10 of 18
Thread Starter 
thanks guys - so how would i know what weeks of manufacture is better than others? and how do i check what week of manufacture my board was made in?
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