vox.
im pretty sure pcie sata voltage is the same as sb pll voltage, but would need to read over the p45 chipset datasheets to tell u for certain. being a mainstream chipset intel might have gone a more cost effective means and gone about this a little differently. personaly id stick to 100-104 and 110-114....my reasoning is somewhat basic. Nvidia uses a 27mhz pll reference on the g80 and newer cards (108mhz base clock is used to obtain the shader clock by 1:2 divider, and memory clock with 1:1 divider), on top of this the gt200 series cards switches the pll reference to the pci-e bus when downclocking to generate the core, shader and memory clocks (which use a 100mhz base clock) in 2d mode for power saving. if you own an nvidia gpu then its probably wise to avoid between 105-109mhz theres more chance of cross talking between gpu bus and pci-e bus when the pll source is switched back and forth. I don't know much on the pll reference ATI uses so I can't help there.
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