SN45G V3

darkgen

darkgen

darkgen

Soldato
Joined
8 Mar 2005
Posts
3,845
Location
London, UK
Very quick clarify, for some inane reason after almost a year I pondered whether I could indeed OC any part of my current system, namely the CPU, but since this is locked at x11 I have always assumed no.

However, I started coming across a few posts on various forums about "SN45" that had a FSB of 215/220 and ... well....

I am right in thinking there is no way a V3 can have it's FSB increased beyond 200 right?

(Hence I'm truly at the limit of what I'm ever likely to get out of this current setup with this particular chip).

Cheers, Paul.
 
Hi Paul, I had a V3 quite a while ago running an xp-m 2600+. I could overclock beyond 200fsb on that system but because my cpu was multiplier unlocked I could grab a high multi opposed to increasing the fsb. I did try upping the fsb to over 220 on that shuttle and it ran fine but my ram would not quite run 1:1.

Anyway, you can indeed increase your fsb beyond 200, but as you know there are many factors which limit your maximum.
I would take the time to read the "Overclocking guide" sticky and get a better understanding of how to overclock your pc.
 
Hmm how do you actually go about increasing the FSB above 200 on these boxs though? It will only allow me to toggle through 133/166/200 within the BIOS.

You're right that the chip is locked to 11, hence my interest in tweaking the FSB slightly above 200.

Cheers, Paul.
 
paul those are your ram dividers, they will change the ratio between you ram and cpu .

you cpu is currently running 200fsb, so when you select the 133 divider for example the ram will run at 133mhz.
 
Skip the below

Using "Expert" allows me to increment the FSB up, doh.

Now to hawk through the threads to see whats a safe OC for a Barton 3200+ and also what's possible :)

(any hints greatly appreciated)

Cheers, Paul

..


Hmm, I understand the FSB is set via Memory SPD, in my setup "aggressive"

Dual DDR at 8 - 3 - 3 - 2.5

This allows me to select a FSB of either 100/133/166/200, which in turn gives my 3200+ (which is locked at a multiplier at 11) so 11x200 = 2200Hmz.

Currently I have all my CPU/RAM/AGP voltage set to auto along with my CPU ratio (which is locked to 11 regardless of what i choose).

It's almost suggested you can tweak the FSB to 210/215+

Do I in turn need to manually set some of the voltages to then enable me yo change the FSB or...

Confused, Paul.
 
Last edited:
its been a while since I've messed with nf2 shuttle, but I'll have a go at remembering the bios :) ok forget what I said at 1st I remember if the bios is set to aggressive it will like you say only allow 100/133/166/200fsb.

its always a good idea to manually input settings in bios apposed to leaving them on auto.
ok, so once your in the advanced chipset menu of the bios set system performance to Expert mode, all CPU fsb settings should become available.
then you can manually up the fsb in small increments, I suggest you put the ram on a divider so you dont raise the ram frequency also. make sure you have program to test the stability f your system as you go along.
 
Last edited:
Well so far it seems to be ok upto FSB 210 which produces a 2310Mhz, However this also means the memory runs at 210 (420) and it's timings slip to 2.5 - 4 - 4 - 9 when viewed within CPU-z.

Well I'm well happy after nearly a year I can possible squeeze another 100/200 Mhz out of the chip, I think I need to check up on what is possible with this SN45 before I start really playing.

Mainly about timings and voltage increases both for the mem and cpu.

i.e. before i melt my memory :)

Cheers, Paul.
 
Last edited:
Well Prime seems to be quite happy running at 210 FSB. 52degrees tops currently.

Not knowing enough about memory timings or what kind of temps they are currently being exposed to is making me slightly anxious.

I'll probs tweak it again to 215 and maybe 220, on both occasions seeing how it fares with prime.

I've yet to even change/tweak any voltages yet on the CPU or RAM.

See how it goes :)
 
I doubt you will need to change the ram voltage, you can simply slacken the timing of the ram to allow it to run at a higher frequency. you ram temps will not change one bit. even with an extra .2volts will do nothing significant to the temperature.
52c is great, bet the cooler is getting a little loud now!
 
Yeah i'm guessing since the CPU is locked to 11 the voltage can be left.
The memory is another matter though, It would seem I got a choice of either 2.7 or 2.8.

Seems rock solid at 210, but start getting POST's at 215. I think it's time for some 101 regarding loosening the timings :)

@ FSB 200 - 8 3 3 2.5
@ FSB 210 - 9 4 4 2.5

Shall I assume :-

@ FSB 215 - 11 4 4 2.5 (haphazrd I know)

Cheers, Paul.
 
Last edited:
ok, so your getting probs at 215fsb then, problem is I'm not sure whether this is because your cpu can go no more with its current voltage and needs more juice or your ram timing is set to tight for the frequency your asking it to do.
also we cant rule out the mb chipset, that may also need more voltage to help stabilize the memory controller, but i doubt it.
you can do a few things here, put the ram on a low divider (will rule out the ram) and see if it gets it stable again, or slacken the timing of the ram to 3-4-4-8
 
Managed to get to the desktop when I put the CPU voltage upto 1.75 at a FSB of 214 but falls over in the first segment of 3DMark05 (athough prime ran happily for 30mins plus, pushed the temp upto 54degrees).

I shall try the mem timings as suggested.

ta, Paul.
 
You must log in or register to reply here.
Back
Top Bottom