How do you know if you have a working PCI lock?

gobucks

Golden Member
Oct 22, 2004
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what mobo do you have? newer nforce boards use ntune to monitor stuff like that, and it should say "PCI bus frequency - 33.33MHz".
 

Brian23

Banned
Dec 28, 1999
1,655
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I have an ECS KT600-A. I thought CPU-Z told what the PCI and AGP speeds were, but I couldn't find it.


EDIT: I found out my board doesn't have a PCI lock by means of overclocking.
 

JMOxx75

Junior Member
May 18, 2005
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I have the A8N-SLI Deluxe mobo with bios v1800 final. I placed the pci bus speed to 33mhz as opposed to Auto and by CPU. I was thinking since I couldn't find a specific PCI lock feature in bios that this was how it was set. Then when I run ntune it tells me that the PCI bus isn't locked and it is linked to my HTT bus. So now when I OC the PCI bus goes up with the HTT bus.

Anyone know what I can do to lock the PCI bus?
 

GuitarDaddy

Lifer
Nov 9, 2004
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Originally posted by: JMOxx75
I have the A8N-SLI Deluxe mobo with bios v1800 final. I placed the pci bus speed to 33mhz as opposed to Auto and by CPU. I was thinking since I couldn't find a specific PCI lock feature in bios that this was how it was set. Then when I run ntune it tells me that the PCI bus isn't locked and it is linked to my HTT bus. So now when I OC the PCI bus goes up with the HTT bus.

Anyone know what I can do to lock the PCI bus?

Yes, you have to set the HTT to 201 or higher in the Jumper Free section of bios, thats the only thing that locks it. If you boot to windows at stock speed and then overclock the PCI and PCI-E busses are unlocked. But as long as you set HTT to 201, you can boot to windows and overclock and the busses will stay locked. And don't use nTune or AI booster to overclock, they will cause you many crashes. Download and use Clockgen NF4, you can safely change HTT and CPU multi in windows with Clockgen. But make all your voltage and memory changes in bios. Good luck:)

 

bjc112

Lifer
Dec 23, 2000
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Originally posted by: Brian23
I have an ECS KT600-A. I thought CPU-Z told what the PCI and AGP speeds were, but I couldn't find it.


EDIT: I found out my board doesn't have a PCI lock by means of overclocking.

PCI/AGP should be set @ 33/66