I hit my first wall

[Toady00]

Ok this is my first OC'ing adventure so bare with me. My second to the last good overclock settings were:

FSB = 1195

Multi = 11

linked

which set my DDR2 rate @ 896.3 MHz

CPU Volt 1.3375

DDR2 Volt 1.85V

Then I tried

FSB = 1195

Multi = 10

unlinked

DDR2 @ 929.5 MHz

CPU Volt 1.3375

DDR2 Volt 1.85V

(I know this last step seems funny but I didn't realize I had changed my multi before and I thought doing this I could find the limit of the memory and then work on getting everything else up.)

It wouldn't boot. So I upped the DDR2 Volt to 1.90V (I skipped 1.875V, I consider that a half step). And It booted no problem. I upped the FSB to 1215, and again it wouldn't boot. So I upped the cpu volt to 1.3475. It still wouldn't boot. My first question is am I taking steps to big? Secondly, am I headed in the right direction with my thinking about the memory? Third, should I ever need to increase a voltage 2 steps at once, or does that mean that I'm doing something wrong? Thanks for all the help guys (and gals).

 

[FarFarAway]

Try 1200Mhz x 10

@ 1.35v

Add a bit onto your CPU VTT and add some to your NBH voltage

Also I would suggest dividing your RAM 1st to see how high your CPU will go, then finding your RAm's limit

 

[Toady00]

OK so I took a step back.

FSB 1195

Multi 10

linked put DDR2@896.3

CPU Volt 1.3375

DDR2 Volt 1.85

Then I upped the FSB to only 1200, it wouldn't boot. I upped the CPU volt to 1.3475, it wouldn't boot. I upped the DDR2 Volt to 1.90, it wouldn't boot. I've had the RAM running @ 930MHz with the cpu @2.99GHz, and it ran 3dMark06 fine, but as soon as the cpu goes to 3GHz it doesn't want to seem to play fair.

 

[Ham]

Vcore is too low i reckons.

 

[Toady00]

Also I would suggest dividing your RAM 1st to see how high your CPU will go, then finding your RAm's limit

Not quite sure what you mean?

 

[Toady00]

I see the CPU Core and the CPU VTT but what are the differences?

 

[Toady00]

FSB 1200

Multi 10

DDR2 900

CPU Volt 1.575 (+.2V from stock)

DDR2 1.9 (+.05V from stock)

CPU VTT 1.3 (+.1V from stock)

NB Volt 1.4 (+.05V from stock)

Before I was getting to my dual boot option and when I selected XP it would give a BSOD. This time it went to the XP logo, and I saw my desktop for about half a sec and it reset itself.

 

[darkorb]

you should work on CPU/RAM one at a time, u have 2 variables, and its gonna make it almost impossible to know which is at its limits where

 

[FragTek]

Dividing your RAM means changing the rate at which it operates in relation to your CPU clock cycle. You should have a divider option in the BIOS to change at which rate it runs, you want to slow your RAM down a bit so you are able to discover your CPU's max speed, the vice-versa to figure out what your RAM is capable of without a CPU limitation.

 

[Toady00]

I don't know exactly how to word this. Does a processor at x speed need y volts no matter how it got to x speed. Meaning for example do you need the same volts for 3.3 GHz if one way is 330 fsb with a 10x multi or 300 with a 11x multi? I'm asking cause I'm wondering if I can use the multi and fsb to find the cpu limit while I wait for my new RAM to come in. Or should I just use the fsb?

 

[darkorb]

300x10 and 333x9 i would assume need the same amount of CPU volts (both 3ghz)

higher bus speed, more bandwith, and i think (correct if im wrong) u would need to increase the NB if its unstable

But there have been benchmarks done with overclocking with multiplier, the higher bus speed doesnt have much or any effect on the performance

 

[Toady00]

I can't turn up my FSB past 1199. At 1200 it won't boot into windows. I've turned down the multi to 9 so my CPU volts won't come into play. At 1200 linked my memory is running at 900. Unlinked I can run it at 930 without changing the voltage.(Haven't tried any higher). If its not my cpu volts now and its not my memory, I figured its got to be the NB now. I upped my NB volts and I still can't boot. Is there some hidden togle that won't let me go past 1199? Am I going down a wrong path. (Or more importantly a dangerous path)? Please help me out guys? thanks!

 

[Mr. Smith]

Weird. Could just have a dud proccy, sorry - one that doesn't OC well... Looking at your settings there all seems fine...

 

[Toady00]

OC Guru in windows will let me clock it to 303 (=1212). But I can't do it in my BIOS . I'd rather do it in the bios but I guess I'll do it however it will let me.

 

[Toady00]

In my bios there is a section that says "NB Strap CPU as" and it is set to "By CPU" and in ()'s it says PSB1066. The options for it are PSB1066, PSB533, PSB800, PSB1333. If I change it to PSB1333 will that help? Or will I screw something up doing that?