Q6600 + P5B Premium + 2x2GB Mushkin XP2-6400 OC Help Please!

[ppeccinnew]

Hi,

Please help me overclock my system.
I have this:
ASUS P5B Premium Vista Edidion
Intel Q6600
2x2Gb Mushkin XP2-6400 4-3-3-10 (996561)
GeForce 8800GTX ACS3

I want to do a little overclock, around 2.8GHz CPU and 900-1000MHz Memory.
I couldnt get the machine to boot Windows with anyting higher than FSB 270.
Can someone help me set the right memory timmings and, most important, CPU and NB voltages to achieve 2.8GHz?
Can it be something related to PCI clock, C1E, or other components voltages?

Please help!

 

[cmdrdredd]

Turn off every option under the CPU config menu in BIOS (C1E etc all off) Change Multi to 8

Turn off spread spectrum. Turn FSB to 400Mhz memory to DDR2-1000 and set voltage on memory to 2.25v set your CPU vcore to around 1.4 to start with(droop will be 1.36 abouts). NB Voltage set to 1.45 . Then change memory timings to 4-4-4-12 and see if it works for you.

This will give you 3.2Ghz CPU

If you want to lower that down to keep it cooler (you may not have a good aftermarket hsf) lower the CPU miltiplyer to 7 and that gives you 2.8Ghz.

your memory may not do DDR2-1000 at those timings so try 5-5-5-15 also.

 

[Pumcy]

I have to agree on most of what he said except the voltage for ram seems very high. you should be able to pull off a nice overclock without that much voltage. i have mine at 950 5-6-6-17 (not performance ram) with only 1.9 volts.
also, if the CPU is a G0 stepping chip, than 1.4v is too high IMO for that much of an overclock. i have mine at 1.39 @ 3.45Ghz
I was able to get mine up that speed on stock voltage. I would try that first.
I hit a complete wall at 9x multi but i got up to 431 (and climbing i hope) on an 8x multi.

granted, we do have different mobos and chipsets so there are lots of variables between our systems. And i have seen only 2 q6600s running faster than mine, but you should be able to easilly pull 3 - 3.2 with a good heat sink.

 

[cmdrdredd]

Originally posted by: Pumcy
I have to agree on most of what he said except the voltage for ram seems very high. you should be able to pull off a nice overclock without that much voltage. i have mine at 950 5-6-6-17 (not performance ram) with only 1.9 volts.
also, if the CPU is a G0 stepping chip, than 1.4v is too high IMO for that much of an overclock. i have mine at 1.39 @ 3.45Ghz
I was able to get mine up that speed on stock voltage. I would try that first.
I hit a complete wall at 9x multi but i got up to 431 (and climbing i hope) on an 8x multi.

granted, we do have different mobos and chipsets so there are lots of variables between our systems. And i have seen only 2 q6600s running faster than mine, but you should be able to easilly pull 3 - 3.2 with a good heat sink.

it depends on the memory. Usually D9 based memory is 2.0v or higher. You also forget about Vdroop. 1.4v is only 1.36v or so depending on the board at full load.

 

[ppeccinnew]

I can't get to post/boot into Vista with just 311 FSB, CPU Voltage 1.4, Memory Voltage 2.05, 5.5.5.18 :-(
Every fancy things turned off as cmdrdredd said.

Wasn't it supposed to work?
Am I forgetting something? Maybe BIOS update? (mine is 0402)

Please help.
Thanks

 

[cmdrdredd]

Originally posted by: ppeccinnew
I can't get to post/boot into Vista with just 311 FSB, CPU Voltage 1.4, Memory Voltage 2.05, 5.5.5.18 :-(
Every fancy things turned off as cmdrdredd said.

Wasn't it supposed to work?
Am I forgetting something? Maybe BIOS update? (mine is 0402)

Please help.
Thanks

did you set your memory ratio properly? If you're at a ratio that tried to run over DDR2-1000 and your memory won't do it there is a problem.

Set your memory to 1:1 ratio or the lowest speed you can at that FSB in the BIOS.

What speed/brand/type of memory do you have. That's probably where the problem is.

 

[Pumcy]

Originally posted by: ppeccinnew
I can't get to post/boot into Vista with just 311 FSB, CPU Voltage 1.4, Memory Voltage 2.05, 5.5.5.18 :-(
Every fancy things turned off as cmdrdredd said.

Wasn't it supposed to work?
Am I forgetting something? Maybe BIOS update? (mine is 0402)

Please help.
Thanks

try 333fsb. 311 might be a fsb hole. just keep playing around with settings untill it works.

i dont know if your board allows you to do this, but my 680i was set for auto on all voltages until i started getting hangs. then i started bumping up the volts notch by notch until it booted stable.