is there a big different between E7400 and E8400?

i edi try for e7500  365x11=4.0ghz @ 1.60vcore
test with occt half hours only........

but i tried 380x11 can boot... but no time to test more.. cos need return the proc to ppl

hi guys,
i got 3.6ghz on my e7400 @ 1.256v. prime stable for 4+ hours. tried to go further but it wont post   

plush, once you've done with finding harmony in CPU OC'ing, now you still got one more big step to go... the PL as -pWs- mentioned (as in Performance level).
PL's purpose is to tighten up the whole system, meaning to tighten up the interaction between the CPU and the RAM and ICH, etc.

For Asus board, it's called 'Ai Transaction Booster'.

Usually the default PL for a system is '12'...you want to get stable at '8' as a starter.
To get to '7', you need to set the FSB to 5:4, so for your system the for instance to need to:
OC the RAM to 1004mhz, FSB @ 400, FSB Strap @ 266. I considered this one of the ultimate combo for C2D cpu with DDR2 800 ram, and P45 or higher chipset of course. I think P35 is considerable.
You can try other divider like 1:1, 3:4, 5:6, but for your hardware I recommend 5:4
If fail to boot, it's because one of the components is the weak link.
'6' is the closest to the 'holy grail' of PL tweaking, this one oftenly requires good mobo..(e.g. Biostar TPower, Maximus Formula, Rampage, etc.)
'5' is the best PL any system can achieve, but need pretty good hardware to maintain stability.
Below '5' are only threaded by Sifus and master overclockers.

I can go as far as '7', but a bit dodgy, so got it to '8' for everyday use, most probably due to my 'Kingston HyperX DDR2 800 mhz' being the weak link (OC to 1004mhz @ 2.1v)...need to get OCZ or Corsair rams to seal the deal..

can.. d9 chips..

im poison too =.=.. btw im using hyperx oso.. just dat mine is 4gb and 1066mhz..

i felt like a waste actually to purchase 1066mhz.. bcoz if wan to get 1:1 timing i need to get my fsb up to 500 at least.. and my board max is 400 fsb only =.= sighs..

=.=, give me ur board.. i give u mine =p

i might consider getting a new board.. still considering.. and dunno which board to get..

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Added on January 16, 2010, 5:32 pmbtw,farscope u stay in kepong rite? me sri damansara.. come my house teach me =p

or every nite im at aman puri old town.. if u see a guy using hp dv2 lappy then it shud be me.. almost every nite i'll be there..

Don't worry, actually your 10066mhz is more than happy to be underclocked, it can run tighter timing without issue @ 4-4-4-12 with stability if underclock to 801mhz.

Run Everest Memory Benchmark, which is more faster:
1) 1066mhz @ 4-4-4-12 with default PL
2) 801mhz @ 5-5-5-15 with PL 8~10.
3) 801mhz @ 4-4-4-12 with PL 8~10> ( I doubt you can get it stabilize with this, but if you do, than it's awesome)
4) 1200mhz @ 4-4-4-12 with default PL
5) 1200mhz @5-5-5-15 with PL 9~11
ETC.

This is what I can think right now.....

1:1 is old school approach, really, it was made obligatory during DRR1 era if you want to OC the ram, DDR2 is a bit different nowadays..
5:4 is as great a ratio as 1:1 ( that is for 2 core procs with DDR2), so can be said for for other ratios depending on your hardware.

For everyday use I  OC my ram to 1066mhz @ 2.1v with PL10 @ 5-5-5-15.

BTW, I'm pretty much off topic because this has nothing to do with OC'ing procs anymore, but the whole system performance.