E6400 OC Q's

C

(clanger)(doa)

n00b
Joined
Sep 30, 2006
Messages
7
Hey guys i bought a P5b-d and a conroe core E6400 i have samsung 667 and a 8800gts..

Well i flashed to the newest bios 804 my 3dmark06 score was like 4300!!
with these settings
355*8 2840mhz
ram 5-5-5-5-12 @ 710




Before the flash i had Bios 614 and got a 8555 score
with these settings....
300*8 2400mhz
Ram 4-4-4-4-10 @ 600


Does this bios suck?.... Why did my score get cut in half..... all tests were stock vid card clox. any one know anything about the new bios's?
 
Oh geez,

You could try a search, my posts here have been over it and LOTS of posts at bleedingedge and extremesystems.

You are having the PCIe 1x issue.


Sometimes depending on voltages and settings, the PCIe gets locked at 1x mode instead of 16x. Funny, I got the exact same score with my X1900XT when it was in 1x. You can change your settings around, (voltages and PCIe freq mainly) but no one knows exactly what causes it.

Get a copy of CPUz and look in the Mainboard tab, it will say what it is there. Try a cold boot by turning off the PSU switch and then booting into windows. Try to make sure your overclock is stable too.
 
Lock the PCIE bus at 101mhz rather than 100mhz.

or 96mhz...

Or 110mhz

:)

Same thing happened to me. Same board and GPU.
 
sweet, i thought there may be a minor issue like that... I thought that it was the BIOS. When i get back i will try those suggestions, if anyone has any others that would be great too.

the OC is 6+hr orthos
 
It is a BIOS issue, but mainly when overclocking. I think it may have started around 614 or so

Locking the PCIe is the first step, raising VCore, lowering Vmch, etc etc, there doesn't seem to be any rhyme or reason to it.

I wouldn't exactly says its a minor issue, I'm pretty damn pissed off about it. 903 Beta bios still doesn't fix it.
 
You think i should go back to 614?? i mean thats what the board shipped with... Are there any major benefits to the newer BIOS's?

BTW my PCI 33.33 and PCI-e 100 clox were locked... stock vcore.
 
woot-- All sorted, just changed the PCI clox to 105 and a reboot and its off and running.

This score is 600\864 max gpu temp was 71c! :) E6400 @ 2800
as soon as i get better ram im goin for 10k!

woot.jpg
 
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