locking pci clock?

dpopiz

Diamond Member
Jan 28, 2001
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I just got one of those 2100+ t-bred B's today, but I've never overclocked before aside from just upping the multiplier on my old t-bird and ocing a radeon. I'm afraid to change the fsb, for fear I might throw off the pci clock. do recent mobo's lock the pci clock? I have an MSI K7N2 (nforce2) and it has this option in the bios called (auto detect pci clock)...is that a pci lock setting?
I want to be absolutely sure I'm not going to crap my hd and other stuff.
 

bgeh

Platinum Member
Nov 16, 2001
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Originally posted by: dpopiz
I just got one of those 2100+ t-bred B's today, but I've never overclocked before aside from just upping the multiplier on my old t-bird and ocing a radeon. I'm afraid to change the fsb, for fear I might throw off the pci clock. do recent mobo's lock the pci clock? I have an MSI K7N2 (nforce2) and it has this option in the bios called (auto detect pci clock)...is that a pci lock setting?
I want to be absolutely sure I'm not going to crap my hd and other stuff.

From Evan Lieb's 6-way Nforce 2 shootout
12/04/02 UPDATE: MSI sends word that the K7N2-L indeed does not have a PCI bus lock at 33MHz, meaning you will overclock your PCI bus to a certain level at a certain overclocked FSB speed.
 

dpopiz

Diamond Member
Jan 28, 2001
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hmmm I did some more research on this myself and The Wise One over at amdmb forums did testing with a pc gieger and found the pci to be 33MHz at 140, 150, 180, etc fsb speeds. Also, even if it still is true that it doesn' have a pci lock for overclocking the fsb, it must allow for 166fsb because it supports official 166fsb chips
 

bgeh

Platinum Member
Nov 16, 2001
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Originally posted by: ChampionAtTufshop
just go for it
wahts the worst that could happen?

corrupted hard drives and broken nic, sound cards
 

bgeh

Platinum Member
Nov 16, 2001
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Originally posted by: dpopiz
hmmm I did some more research on this myself and The Wise One over at amdmb forums did testing with a pc gieger and found the pci to be 33MHz at 140, 150, 180, etc fsb speeds. Also, even if it still is true that it doesn' have a pci lock for overclocking the fsb, it must allow for 166fsb because it supports official 166fsb chips

it should have a /5 divider
 

ChampionAtTufshop

Platinum Member
Nov 15, 2002
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Originally posted by: bgeh
Originally posted by: ChampionAtTufshop
just go for it
wahts the worst that could happen?

corrupted hard drives and broken nic, sound cards

he would notice b4 anything broke i would expect
but go up little by little


it should atleast have 1/5 divider, so u know u can go there for sure lol
besides, most pci cards can take 38mhz or so, and most hd's as well