Overclocking s1366 dual cpu system

[masterdeejay]

Im started researching an interesing overclock project. It is not a guide just theory. It is possible or not?

I have a dual cpu setup, Lenovo D20.
I know that the only overclockable dual motherboard for this socket is the EVGA SR2. But it is highly overpriced, rare and it has only 3 channel memory not 2x3 channel...
On any other dual socket 1366 there is no way to overclock, no bios support, nothing...
(there is no unlocked multi dual configuration supported cpus!)

So i have a theory:
On the little brother socket 1156 platform there is a classic "fsb" way of overclocking.
Raising the "fsb" and lowering the qpi link and ram speed. It is like on the AMD K8 platform.

It is possible to overclock dual system too. I need 3 things:
Using setfsb app, lowering the ram ratio, and somehow reducing the qpi link speed.

1. first test the setfsb
On this motherboard the is a pll chip ICS932S422BGLF, the setfsb dont have this but i tried a closer one:

only a few mhz, if i try another it is freezes (on the picture power management lowers the clock speed, but you can see that is from 3066 to 3133)
it raises the qpi and ram speed.
PCIe and pci buses is fixed (info from the PLL)
this is not much but my ram is only 1066mhz very anti-overclock ecc reg 16gb sticks so i think that limits the overclock. Or it is a wall? I dont know...

2. lowering the ram speed to make the higher "fsb" stable
theory:
1. installing another ram to overload the controller, that forces it to 800mhz (more than 3 quad rank memory installed per channel) - not a very good way...
2. writing the spd to force the 800 - a little bit better
3. finding a way to control the ram ratio? from 8 (1066) to 7(931) not 6 (800) any ideas?

3. lowering the qpi link speed (and anything that limits overclock, uncore? )
that is tough, pinmod? any ideas?

4. increasing vcore if needed
pinmod or what?

 

[Deleted member 185158]

You had used this PLL? ICS932S421BGLF (D5400XS) ? Closest one supported by SetFSB that I can see.

Read here for "pin modding 1366"

pin mod LGA1366 cpus (i7 & xeons)

Xeons and i7 are essentially the same except ECC/registered memory, 2nd QPI and processor synchronization. Setting the QPILINK (4.8/5.86/6.4 GT/s) is tricky. Unsure if it can be done by pins alone, they are registers after all. Does anyone have any idea?

www.xtremesystems.org

Read hear about SetFSB..

SetFSB - Clock Generator List Compilation

www.overclock.net

Other than that, you'll have to find someone that can further help, I'm not quite familiar with SetFSB as I am with ClockGen.

Maybe @Mr.Scott or @Bones Can help you further here or at least head you the right way.

 

[natr0n]

You can only do about 3-5 MHz before locks up.

You cant do much with dual xeon boards unless they were made to tinker.

My board has the pll chip your using on setfsb. If you disable HT in bios system allows for higher fsb usually In my testing.

 

[Mr.Scott]

This ^^^

You seek SR2 land. There is no substitute.

 

[Bones]

If you don't have the correct/exact PLL for the program chances are it won't work, possibly even crashing/locking up the system.

 

[Deleted member 185158]

Thank you fellas for chiming in. I didn't want to say yes or no lol. (I figured aim towards the pin mod, but expect nothing great from it, probably not worth the risk imo.) Again thanks.