Other Installation For Your Reference; Setting Cpu Voltage And Frequency - AOpen i865Gm-I Manual

3.3 Other Installation for Your Reference

Setting CPU Voltage and Frequency

Setting CPU Core Voltage
This motherboard supports Voltage ID (VID) function to detect CPU voltage
automatically during power-on.
Setting CPU Frequency
This motherboard is of CPU jumper-less design; you can set CPU frequency by
1MHz stepping CPU Overclocking in the BIOS. CPU Core Frequency = CPU FSB
clock x CPU Ratio. However, all CPU now sold in market belong to "Fixed
Multiplier". That means users can not adjust the CPU Ratio but change CPU FSB
clock to achieve overclocking only.
BIOS Setup > Frequency / Voltage Control > CPU Speed Setup
(Users will do the overclocking at their own risks!!)
CPU Model Name
Pentium 4 2.4AG
Pentium 4 2.8AG
Pentium 4 2.8BG
Pentium 4 2.8CG
Pentium 4 2.8EG
Pentium 4 3.0CG
Pentium 4 3.0EG
Pentium 4 3.06BG
Pentium 4 3.2CG
Pentium 4 3.2EG
Pentium 4 3.4CG
Pentium 4 3.4EG
Celeron 325
Celeron 330
Celeron 335
Celeron 340
Celeron 345
Note: With CPU speed changing rapidly, there might be faster CPU on the
market by the time you received this installation guide. This table is
kindly for your references only.
CPU Ratio
CPU FSB (Adjustment manually)
CPU Core System
Freq. Bus
2400MHz 533MHz
2800MHz 533MHz
2800MHz 533MHz
2800MHz 800MHz
2800MHz 800MHz
3000MHz 800MHz
3000MHz 800MHz
3066MHz 533MHz
3200MHz 800MHz
3200MHz 800MHz
3400MHz 800MHz
3400MHz 800MHz
2533MHz 533MHz
2666MHz 533MHz
2800MHz 533MHz
2933MHz 533MHz
3066MHz 533MHz
8x, 10x... 24x, 25x, 26x, 27x, 28x
FSB = 100MHz-248MHz by 1MHz Stepping CPU Overclocking
L2 Cache Ratio
1MB 18x
1MB 21x
512KB 21x
512KB 14x
1MB 14x
512KB 15x
1MB 15x
512KB 23x
512KB 16x
1MB 16x
512KB 17x
1MB 17x
256KB 19x
256KB 20x
256KB 21x
256KB 22x
256KB 23x
17
Note:
Intel
865G/865GV chipset
support Intel P4
Northwood and
Prescott processor.
Northwood and
Prescott processor
could detect the clock
ratio automatically;
you may not be able to
adjust the clock ratio
in BIOS manual.
Warning:
865G/865GV chipset
support maximum
800MHz (200MHz*4)
system bus and 66MHz
AGP clock; higher clock
setting may cause
serious system
damage.
Intel