Q6600 memory multiplier help

RobMunfy · 30 Dec 2008 at 22:21

Hi guys,

I'm currently running the spec in my sig. Just trying to get 3.2 Ghz at 400x8, but I getting errors in prime95. My vcore is currently at 1.375, which I believe is enough.

I think the problem is to do with my memory multiplier. I am unsure what I should set it to in my BIOS as the settings confuse me a bit. You can either choose selection A,B,C or D with varying values from 2.0 up to about 4.0. IIRC it says that B corresponds to 333Mhz FSB, D 400Mhz and I can't remember A and C. Will check if necessary.

Here are my screenies from CPU-Z:

Does anything look out of the ordinary here? I believe that I should be able to get to 3.2Ghz with my cooler quite easily, but seem to be struggling?

Cheers, Rob

Angst · 30 Dec 2008 at 23:01

try to unlink your ram then if that doesnt wrk up your vcore to about 1.4v and if stable lower it until it isnt then put it back up 2 notches

Mr Paul · 30 Dec 2008 at 23:02

You need to put your memory to a 1:1 ratio, that way it will run in spec at 400Mhz.

Oh and your timings seem to tight (according to the SPD)

robert.brookes@ · 30 Dec 2008 at 23:03

your overclocking your ram too much

what motherboard do you have drop your ram to 1:1:0 which should allow more cpu overclock

my rams set at 1:1:20

378x9 = 3.402ghz if i remember right

mem timing 5.5.5.18
oc to 453mhz

1.4625 v core u might need more as your vid is slightly higher than mine

RobMunfy · 30 Dec 2008 at 23:20

Sorry guys, I'm a bit new to this and will need some explaining done if you don't mind?

drop your ram to 1:1:0

How do I do this?

You need to put your memory to a 1:1 ratio

I think this is similar to what you are saying above. Is this to do with the memory multiplier (The 2.40B thing?)

try to unlink your ram

Is this also similar to above?

Oh and your timings seem to tight (according to the SPD)

What do you think would be ok?

Sorry for all the questions. Am new to this and want to get the most out of my system

Mr Paul · 30 Dec 2008 at 23:37

From CPU-Z it shows your SPD timings for 400Mhz. Set them to the same.

RobMunfy · 30 Dec 2008 at 23:45

Right, I've tightened my memory up to 6-6-6-18 and am still getting errors in Prime95. Would still be interested to hear about how to get a 1:1 ratio?

Mr Paul · 30 Dec 2008 at 23:50

Well if "D" is 400Mhz for the memory then try that. Failing that just play around and check in CPU-Z at what speed your memory is running at.

easyrider · 30 Dec 2008 at 23:52

Just use the 9X multi FSB is not the be all and end all.

RobMunfy · 31 Dec 2008 at 10:56

Ok, i think I'm starting to get it lol.

If I were to use a 9x multi and FSB of 333Mhz. What would I want my ratio to be?
If I then upped the FSB to 350, what should it be then?

easyrider · 31 Dec 2008 at 11:00

Look its simple

9x400 =3.6ghz ram running at 800mhz speeds 1:1

9x 333= 2.997ghz running ran at 666mhz speeds 1:1

Have a read of the Q6600 overclocking thread

here

http://forums.overclockers.co.uk/sh...&highlight=official+q6600+overclocking+thread

MooMoo444 · 31 Dec 2008 at 11:01

Your RAM is rated to run 400mhz at 6-6-6-18, and you're trying to get 480mhz 5-5-5-15 out of it?

Pretty solid bet thats your problem m8.

MadMatty · 31 Dec 2008 at 11:16

If its 8x400 your still going for, the 'system memory multiplier' setting you want is 2.00D (1:1 400fsb strap) which will run the memory in spec. if you leave the other mem timmings on auto they should run at the appropriate timmings unless you want to force them in . If you have a performance enhance option in bios, make sure its set to 'standard' SHould just be a case of working up the vcore then to stabalize and then more again if you wish to try 9x400

setter · 31 Dec 2008 at 14:37

easyrider said:
Just use the 9X multi FSB is not the be all and end all.

Ive been wondering about this for a while now, all of the overclocks ive achieved with my current system (3ghz, 3.4, 3.6, 3.8) were done with a 9x multi, memory running below rated speed, [email protected], and now running 9x422 fsb, ram overclocked @844mhz. Would dropping the multi to 8x and running the higher FSB make much of a difference performance wise.

Predator · 31 Dec 2008 at 15:27

I got all my settings from here

http://www.ocztechnologyforum.com/forum/showthread.php?t=37480

May help you out in a few areas.

Big.Wayne · 31 Dec 2008 at 15:57

RobMunfy said:

Hey Rob, as the others have said you are overclocking your ram way beyond what its rated to run at, as standard it can run 400MHz (DDR2-800) at 6-6-6-18 but you have it set-up to run at 480MHz (DDR2-960) at 5-5-5-18.

Have a read of your motherboard manual and find out where to change the DDR2 speeds. If you want to test just the memory then download a bootable Memtest .iso and burn it to CD-ROm and test, I imagine it will throw up a heap of red errors showing you the ram cannot run at those speeds.

Your system will overall work much faster with the way you have the memory at the moment though so it could be worth trying to find out a way to make it stable, firstly you could increase the voltage to the RAM, this helps with certain sticks but not all, secondly you could try *slackening* the timings from 5-5-5-18 to 6-6-6-18. The combination of extra memory voltage and slacker timings may help the sticks run stable at 480MHz (DDR2-960).

The last thing that comes into play is the MCH (memory controller Hub) aka Northbridge/chipset. As you increase your FSB it begins to strain and may need an extra boost in voltage (vNB/vMCH). The Northbridge is placed under further strain when you lower the CPU multiplier from its default i.e the northbridge will have to work harder when you change the multi from x9 to x8.