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Strange issues overclocking a GA-7VRXP
I've got a gigabyte GA-7VRXP mainboard.
2 sticks of Crucial PC2700 256 Meg DDR
1 stick of Crucial PC2700 512 Meg DDR
2x80 gig WD800BB drives on the onboard RAID controller
1x40 gig Maxtor ata/133 OS drive
Palomino XP1800 CPU stock clocked at 11.5x133
Volcano 6cu HSF
Powercolor Dual head GF4 ti 4200 64 meg card stock clock
Intel EtherExpress 10/100 NIC
SB Live 5.1 audio
(onboard LAN and audio disabled)
OS dual boots FreeBSD 4.8-STABLE and W2K pro sp3
I'm upgrading to a t-bred XP2400 this weekend and planning to overclock it, so in preperation I've been playing with the overclocking features of the board. In doing so I've noticed some anomolies.
When using the DIPS on the board to unlock the multiplier on my XP1800, the system won't POST if I underclock it. If I overclock, it POSTs, but on initial probe it still reports an XP1800 as the installed CPU, and later on it reports the cpu frequency at 1533mhz, which is correct for a XP1800. I haven't had a chance to boot windows and see what WCPUID reports, but do you suppose the CPU is being overclocked or not?
The board has DIP settings for all multipliers inscribed on it up to 12.0. 12.5 is marked as 12.5 and above. The manual matches. Are there settings for multipliers higher than this available? (perhaps with a newer BIOS...)
There is a DIP for setting the FSB of the board to either 100 or 133mhz. Supposedly 166 is a stock speed for the KT333 chipsets, however in the BIOS there is no multiplier lock option for the PCI and memory bus. Will upping the FSB to 166 via the BIOS set the PCI and memory bus to some insanely high frequency, or are the dividers there to get them back down to stock frequencies?
TIA
Josh
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