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Frequency / Ratio / Timings question

post #1 of 6
Thread Starter 
Hello all,
I've read posts about all kinds of different things here over the years, but haven't really needed to post. I just joined in hopes of getting some advice because I'm tired of resetting my CMOS when honestly I don't know exactly what I'm doing.

Here goes:

Intel Quad Core 2.66 GHz Q9400
Patriot PC-8500 DDR2 1066MHz RAM (PVS24G8500ELKR2)
nVidia GTS-450 1024MB GDDR5 video card
MSI P45-Neo2 mainboard

I've played around with the settings, because my BIOS wasn't playing nice with the stock RAM timings. It wants to use the generic 800 MHz timings, but I did successfully use the recommended timings of 5-5-5-15 @ ~2.1v.

Before I set the voltage I was getting nonstop IRQL NOT LESS THAN OR EQUAL BSODs and bad memory and page reads / write BSODs trying to go up to 1066 MHz. Normally I don't play with voltages because I don't understand it and I don't want to fry anything. I figured the BIOS's job was to set all this stuff automatically.

It took months of randomly searching forums before I tracked it down and I was a little surprised that this is common behavior lately, with the BIOS defaulting to automatically using "safe" settings. After changing the voltage to over 2.1v it runs smoothly @ 1066 MHz, but I've been curious about the CPUz readings and the other ratio settings.

1. I'm not wishing to overclock anything, I just want my machine to run at it's advertised specs. I've had the CPU up to ~2.7GHz with no issues for the past week or so. A little CPU OC won't bother me.

2. The RAM seems extremely finnicky and changing the FSB : DRAM ratio likes to bork POSTing more often than not, even when changing the other ratios.

3. CPUz shows the following:


I've read advice on running the CPU faster with a lower ratio, I've read you want a 1:1 FSB : DRAM, I've read you do not want a 1:1 FSB : DRAM, I've read you want the CPU running slower with the RAM faster, I've read you want the RAM running slower with tighter timings... and like I've said I've tried a few settings, but most of the time it won't POST and I go back to the settings CPUz lists in the link above.

So, given the hardware in my box, what sort of settings for these would you guys recommend?

In my BIOS I can manually adjust the following ratios:

Front Side Bus Frequency (MHz): currently 333 MHz
Multiplier: currently x8
FSB/DRAM Ratio: currently AUTO (but after choosing all the available ratios I think it's using 1:1.60)
Memory Timings of 5-5-5-15 @ ~2.1v

I just feel like I've been tinkering with this build, but haven't unlocked it's full potential just yet, and I'd love some advice.

Any replies would be greatly appreciated!
post #2 of 6
Thread Starter 



There are some quick links to see specs...

And P.S. my CPU multiplier allows only the settings of 6, 7, 7.5, and 8

I'm reading up on what the multiplier does exactly, because this is the only thing I'm unsure of now.
Edited by WCrispy - 1/12/11 at 1:52pm
post #3 of 6
Thread Starter 
From reading some other stuff with the same sort of system specs, it looks like I could possibly do this:

CPU from 333 --> 400
RAM from 533 --> 400

and I'd get the 1:1 ratio...?

Would this be a benefit for stability and to eliminate bottlenecks between the CPU and RAM?

And to make sure I'm reading this right, 333x4 CPUs = ~1333 CPU, 400x2 = 800 RAM
The mainboard specs list 1333 as a possibility...
post #4 of 6
Thread Starter 
Ok and now to list my 1:1 Test:


Since the RAM is running slower, would it be time to play with the timings? I'm not really sure on what they do, exactly.

Sorry I'm talking to myself, it's just my way of logging my work, heh.
post #5 of 6
Thread Starter 
So the previous 1:1 wasn't as stable as I'd like. The entire OS froze when I left WoW open.

I'm going to try this for a bit to see what happens:

post #6 of 6
Thread Starter 
Nope. BSOD on that setting with the good old Page Fault in Non Paged Area or whatever it is, which is what was happening before I got the system to my very first CPUz post link up there. So, unless I wanna get into liquid cooling and stuff (or upgrade my CPU) I'll leave it alone for now.
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