Pci-e limits fsb?

[AKlass]

I have an E2180 on a gigabyte 945GCM-S2C board on the F5 bios and I'm trying to O.C to 2.66 ghz. Problem is when I set FSB to 266 and Pci-e to 100, It won't post. I loosened my ram timings to 5-5-5-15 @ 2.0v, upped the CPU core to 1.375, and added 0.1 to the FSB. Whenever i set the Pci-e freq to auto the system would post, but would be unstable. If I BSEL mod my Cpu will that let the pci-e work at 100mhz?

 

[newconroer]

As a rule of thumb, lock the PCI E to 100, and never touch it again.

Your problem lies elsewhere.

 

[ZenZimZaliben]

Will it post when you have the FSB at 200 and PCIe at 100?

Also please post you full system spec under your user profile...Its Under the USER CP tab at the top. Then systems specs on the right col.

 

[AKlass]

Will it post when you have the FSB at 200 and PCIe at 100?

Also please post you full system spec under your user profile...Its Under the USER CP tab at the top. Then systems specs on the right col.

It will post with the FSB at 200 and 220 and Pci-e set at 100 but it is unstable. At 200FSB 100PCI-E and 1.2 vcore the system froze after logon. At 220FSB and 100PCI-E and 1.2 vcore it got into windows but froze 1 min into COD4

 

[ZenZimZaliben]

What FSB/Mem ratio are you using? I am not familiar with the memory you have but its rated at 667Mhz, and depending on the FSB/Mem ratio pushing the FSB to 266 could be causing your ram to run well past its rated values.

SO either try a different ram/fsb ratio, dont use 1:1

OR try adding more voltage to the RAM and maybe loosen the timings a little.

 

[AKlass]

What FSB/Mem ratio are you using? I am not familiar with the memory you have but its rated at 667Mhz, and depending on the FSB/Mem ratio pushing the FSB to 266 could be causing your ram to run well past its rated values.

SO either try a different ram/fsb ratio, dont use 1:1

OR try adding more voltage to the RAM and maybe loosen the timings a little.

Thanks for your help, but the 945 chipset raises FSB with PCI freq, Luckily Im using pata drives

 

[sneekypeet]

1.2V to a pentium dual and you are trying to clock it????.....thats the reason, try supplying the correct CPU voltage first then worry about the PCI-e clock!

 

[erocker]

Thanks for your help, but the 945 chipset raises FSB with PCI freq, Luckily Im using pata drives

That's what I was afraid of, no pci-e lock. Don't even bother overclocking with that motherboard. 220 fsb is going to be unstable no matter what you do.

 

[panchoman]

yup, you cant lock in the pci e.. so you cant really oc via the motherboard without having a really high pci e freq.. which is bad..

try pin modding the cpu to get some oc's

 

[ZenZimZaliben]

ehhh...well that makes sense.

 

[AKlass]

Ehh I'm just using a 220 FSB to, which shouldn't raise the clock too much, Wouldn't Pin modding be the same thing? It raises the FSB but at the same time causes a higher pci-e freq?

 

[panchoman]

no, the cpu mod increases the native fsb of the cpu.. so basically an e4300 will register as an e6600 in the motherboard with the mod.