just wondering how to overclock this. what do i change in the bios. my
ddr ram is pc2100. video card is geforce 3 ti 500. stock intel fan. is
this possible? TIA.
CPU Speed [Manual]
CPU External Frequency [CPU_clock/PCI_clock]
You can find overclocking data here. Look up your processor in
the Intel section:
http://cpudatabase.com/CPUdb
Based on the overclock data, it looks like some users
have managed to take their 2.2GHz/FSB400 processor to
FSB533. This would require the [133/33] setting for
external frequency, and is pretty ambitious (i.e. not
likely to work).
Your biggest challenge, will be the fact that the BIOS
doesn't have the ability to change Vcore. Vcore powers
the processor core, and to overclock, you would normally
need a bit of a voltage boost. If the BIOS doesn't
support voltage boost, the only other thing to try is
modifying the VID code coming from the processor to the
Vcore regulator. That requires some knowledge of hardware
and electronics. If the VID code was 11010, for example,
you can only change the logic "1" bits, to logic 0, via
a grounding wire on that logic bit. There is no way to
change a logic 0 to a 1, unless you cut or insulate a
VID pin on the processor (very messy). In any case, this
is not a procedure for newbie overclockers.
You can see here:
http://processorfinder.intel.com/sc...cFam=483&PkgType=ALL&SysBusSpd=ALL&CorSpd=ALL
that in the example, the processor uses 1.53 volts, and yet on
the CPUdb web page, the overclockers used 1.75 or 1.8 volts
to reach high overclocks.
Below are some sample external frequency choices. For a FSB400
processor, the normal value is [100/33]. You can try any choice
where the second (PCI_clock) does not exceed 37.5MHz. So, 38MHz
PCI clock values or higher, are not recommended, as they cause
IDE disk corruption. Without a Vcore modification, you might
make it to 110/37 before it crashes. You cannot try 113/38, and
the next valid speed would be 120/30, as at 120, the 1/4 divider
cuts in, and reduces the PCI clock to a safe value.
If you could modify the voltage, then you could go all the
way to 133/33. Watch the processor temperatures while doing
this.
100/33 114/38 128/32 142/36 156/39
101/34 115/38 129/32 143/36 157/39
102/34 116/39 130/33 144/36 158/40
103/34 117/39 131/33 145/36 159/40
104/35 118/39 132/33 146/37 160/32
105/35 119/40 133/33 147/37 161/32
106/35 120/30 134/34 148/37 162/32
107/36 121/30 135/34 149/37 163/33
108/36 122/31 136/34 150/38 164/33
109/36 123/31 137/34 151/38 165/33
110/37 124/31 138/35 152/38 166/33
111/37 125/31 139/35 153/38
112/37 126/32 140/35 154/39
113/38 127/32 141/35 155/39
You should not be booting into Windows while overclocking. Get
a copy of memtest86, from memtest.org. The executable contains
a floppy disk formatter, and when used with a blank floppy
diskette, it will make a bootable system disk for you. The
floppy will not be readable in Windows, as it doesn't have
a normal file system on it. Set the boot order so that the
floppy is loaded first. Overclock the computer, then let the
memtest floppy boot the computer. Run a couple of passes of
memtest, before trying to boot Windows. This procedure will
reduce the chances of corrupting your hard drive. If memtest
is error free, then you stand a better chance of booting
into Windows.
If the computer crashes, and after resetting or powering
down, the computer won't POST, you will need to use the
"clear the CMOS" procedure. Unplug the computer before
doing this procedure. Look for "Clear RTC RAM (CLRTC1)"
in the manual. You will have to re-enter your custom
BIOS settings after doing this.
HTH,
Paul
