e6600@3ghz....ddr2 667 or 800?

[Lazarus7]

Hey , I know this has been discussed before but it always seems that there are different opinions. My object is to run an e6600 @ ~3.0ghz which I believe will be FSB of 333mhz which will be 1:1 with my ram. Now does this mean I should get 667 ram or go with 800?

Thanks

 

[TonyStark]

667, unless you want to try different ratios. 800 can run at 667 also, and allows more room for overclocking in the future.

 

[mekender]

you can do what i did last night, go with 400x8 and the 6600 will run 3.2 with no problems... that way your ram runs 1:1 at 800Mhz

 

[kamran5461]

i have ddr2800 and i want to try to get that 1:1 ration.
if i go 400x8 on OC. then do i bring down my memory speed to 667 or 533?

thanks.

 

[mekender]

if you go 400x8 your memory sets to 2.0 and you'll get 800 out of it, works like a charm

 

[Wonderwill]

Don't you guys mean 400x9=3.6Ghz? Get the 800, underclock it and tighten timings for 667Mhz. gl

 

[mekender]

400x8 will run at 3.2, 400X9 will run at 3.6, the thing is, at 400x9 you probably will have to overvolt the vCore, at 400x8 you dont have to

 

[Wonderwill]

400x8 will run at 3.2, 400X9 will run at 3.6, the thing is, at 400x9 you probably will have to overvolt the vCore, at 400x8 you dont have to

That wasn't my point, but how exactly can you change the multiplier when it's locked?

 

[sanjiwatsuki]

I believe you can down play the multiplier.

 

[Wonderwill]

I believe you can down play the multiplier.

Really? I know I can change FSB but never multiplier on a C2D... but maybe it's just my mobo.

 

[mekender]

what board do you have?

 

[Wonderwill]

what board do you have?

ECS P965T-A (got it for free but it does have multiplier changer for P4s.)

 

[mekender]

well after looking at the MB manual, its not really clear as to how you would do that so im not sure

heres what i see

Frequency/Voltage Control
This item enables you to set the clock speed and system bus for your system. The clock speed and system bus are determined by the kind of processor you have installed in your
system.

CPU Clock Ratio (16X)
Enables you to set the CPU clock. The CPU clock ratio times the CPU Host/PCI Clock
should equal the core speed of the installed processor.
Example: CPU Clock Ratio 16
CPU Frequency x 200
Installed CPU Clock Speed 3200MHz

DIMM/NB/CPU Voltage Control (Default)
Use this item to enable the DIMM/NB/CPU voltage control function.

Auto Detect PCI Clk (Enabled)
When this item is enabled, BIOS will disable the clock signal of free DIMM and PCI slots.

Spread Spectrum (Disabled)
If you enable spread spectrum, it can significantly reduce the EMI (Electro-Magnetic
Interference) generated by the system.

Host/SRC/PCI Clock (Default)
This item allows you to adjust the SRC/PCI Clock clock. You can key-in the numbers within
the range to make a precise and ideal adjustment.

this seems to be a fairly featureless bios, so you might be out of luck

 

[Wonderwill]

Yeah that's the manual all right... Either way I didn't know you could change "locked" multipliers. Can you raise them or is that just in C2 Extremes?

 

[mekender]

nope, you cant raise them, and im not sure you would want to, you can only lower them... so you can do things like 8x400 so that your ram runs 1:1 at 800

 

[Wonderwill]

nope, you cant raise them, and im not sure you would want to, you can only lower them... so you can do things like 8x400 so that your ram runs 1:1 at 800

Okay that's actually pretty cool. Too bad my board sucks at overclocking...