The "fsb", "pcie", and "pci" values below are what ClockGen gave me. The PCI Express clock is set to a fixed 100MHz in the BIOS. I tried ClockGen with my FSB set at several values. The FSB and DDR clocks seem to read fine but the PCI and Express readings are odd. It sort of works, but the numbers don't all make sense so I'm afraid I can't really draw any conclusions from it. So I set up ClockGen with the "ICS 954519" option.
#Clockgen overclock generator
I found the clock generator on the board, it's an ICS 954519BGLF. Thanks for the help, and for uploading that file. The motherboard BIOS says I can do this, but tons of random forum chatter says I can't.ĭoes anybody *know* how this works? Why would the bios have a manual PCIe setting if it doesn't actually work? I just want to raise the FSB but leave the PCIe at the standard 100MHz. I don't want to fry the video card by overclocking that slot. So I'm in the dark about where it's actually running. I haven't found any software utilities that will do this either. I wish I had a way to measure the PCI express frequency, but I don't. So is the motherboard a liar? Or is this limitation of the 945 a myth? Perhaps it only applies to certain versions of the chipset? I can set it to 100MHz and independently change the FSB. However, the BIOS in this motherboard has a setting to manually set the PCIe frequency. Supposedly you have to pinmod the CPU to change the PCIe ratio. Somebody also said that even if you overclock to a standard speed (such as from 200fsb -> 266fsb) it still will end up overclocking the PCIe slot.
Googling around I've seen several comments claiming that the Intel 945 doesn't support a locked PCIe frequency. I get the feeling I could overclock it significantly, but I'm worried about the frequency of the PCI express slot. The video card is a Geforce 9800GT (lion's share of the budget). The motherboard (MSI Neo5-F MS-7236 v2.5) and cpu (Celeron 430 1.8GHz) were an inexpensive bundle from Fry's.
I'm setting up an inexpensive gaming machine that will be given to my nephew at Christmas.
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