E6300 & GIGABYTE 965P- DS3 O/C Help

[kipo]

Hi i need a little advice, i have the following setup,

C2D E6300 1.86ghz
GIGABYTE 965P- DS3 Rev 1.0 F13 Bios
2 x OCZ 4GB (2x2GB) DDR2 1000Mhz/PC2-8000 PLATINUM : Total 8gb
Jeantech 450w power supply
Asus nvidia 7800GTX 256mb GTX Card
3 x sata hdd totaling 1tb
Modded Arctic freezer pro 7 (+2 60mm fans)

my processor allows a multiplier of x6 or x7 and currently i have the FSB set to 400 so 400 x 7 = 2800 @ 1.35v

my ram should support this speed easily but i seem to get errors with vista x64 its fine if i reduce the FSB to 375ish.

when overclocking do i raise the FSB or should i keep the fsb at 266 (or whatever the default is) and change the memory divider to operate the ram at its rated speed? running my ram at 1000mhz with fsb at 266 causes the pc not to POST. i've upped the fsb vcore and memory (2.1v for memory as per specs) voltages slightly but to no avail.

Please can someone offer me some guidance, i'm thinking its my puny power supply thats holding me back from a good stable overclock, but please feel free to give me your opinions.

[LagunaX]

Don't overclock cpu and ram at the same time when trying to find the ceiling for both.
Set the ram to run at 1:1 for now (even though it can do a lot better) and and then see how high your cpu can go.
Good luck.

[kipo]

thanks for the quick reply!

been lurking here a while, you always pop up in google searches when i need to find stuff out! a very handy site

thats what its runnig at now, i should be able to get the FSB up to 435-450 looking at simular setups but i cant seem to get it up that high!

if i increase the cpu volts to 1.45 ish i can warm boot but not cold boot at higher FSB's

[LagunaX]

Did you do the basics?
Lock pci-e to 100, disable spectrums and EIST?
Northbridge needs to be bumped up too - 1.2 or 1.3 for 400+, up to 1.4 for greater than 450 fsb (gmch).
It's been a while since my gigabyte p965 ds3 days.

[kipo]

lol this old baby is still going strong :-) she just needs a bit more omph!!!

yeah i've followed many guides played with the volts and loosened the timings, sometimes i can boot with high fsb but then other times i cannot (with the same settings)

i've tried pulling the plug on all my drives bar one and disconnecting all usb devices, do you think a 600w-700w power supply give me more juice and stability?

[LagunaX]

I've overclocked an e4300 to 3.4ghz stable 1.45v on the same mobo as yours, actually same cooler on a 380w psu.
However, it had a basic vga card not a power hungry 7800gtx like yours.
However, in my sig I run a 4870 and overclocked e8500 with a 600w psu.

Could be your card sucks up too much juice for overclocking but then again you are running 4 sticks of ram too.

Try 1.5v (it will droop to 1.45) as long as temps are ok and dropping to 2 sticks on ram in dual channel and see how high you can go.