MSI P45 Diamond : Question about voltages and straps.

Hi,
Before I start a post with my overclocking problems I want to learn more about the board and have a few questions:
1. OC Jumpers: What do they exactly do, do the increase any voltages, do the change the nb strap or do they only increase the fsb. If they do not change the strap, when/where does the board change it 266/333/400?
2. What is the maximum safe voltages for the mch,ich,fsb?
3. New BIOS: Does anyone know when can we expect one or where can I download a beta that is newer than 1.4.
Ok, my problem is that I can overclock past 390. I can get 400 but it is not stable in windows. I first want tolearn how the board works before I discuss my oc problem.
PC Specs:
MSI P45 Diamond (v1.4 Bios)
Intel Q9300 (ran 2000fsb on a xfx 780i)
4x1gb Transcend aXeram DDR3-1800+
Zalman 850W power supply
XFX GTX 260 XXX
Xfi Titanium
Thanks

Quote
1. OC Jumpers: What do they exactly do, do the increase any voltages, do the change the nb strap or do they only increase the fsb. If they do not change the strap, when/where does the board change it 266/333/400?
The jumpers change the strap & the FSB Frequency:
When you have an FSB-266 MHz processor and put the jumpers into the 333 MHz position, the FSB Clock Speed will be forced to 333 MHz and the BIOS treats the CPU as though it is an FSB-333-MHz Processor, that means even after a CMOS Clear, the FSB Clock Speed will be 333 MHz and FSB/Memory Ratio will be adjusted automatically based on that strap and the SPD Tables of your memory modules.
Quote
2. What is the maximum safe voltages for the mch,ich,fsb?
The Intel Datasheet for the P45 Chipset should give you a basic overview on voltage ranges.  However, you may need to exceed these ranges, in some cases, depending on your overclock to keep the system stable.  You will find nobody, that will seriously be willing to tell you the "maximum safe voltage" as every voltage increase is potentially dangerous to your the components.  Welcome to overclocking.
Quote
3. New BIOS: Does anyone know when can we expect one or where can I download a beta that is newer than 1.4.
The latest BETA I know about so far is v1.5b1.
Quote
Ok, my problem is that I can overclock past 390. I can get 400 but it is not stable in windows. I first want tolearn how the board works before I discuss my oc problem.
Please give a full overview of your Cell Menu settings if you need suggestions.

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