Q9400 doesnt overclock...help

[IBM_THINKPAD_R51]

So I saw a video on youtube where you can overclock these dell OptiPlex prebuilts by taking the model of you PAG chip and putting it inside this program called " setfsb " or set-front-side-bus. Basically i guess it gets the clock generator model and it allows you to overclock the front side bus, and therefore you can overclock the CPU. Now here is my problem, the guy in the video gets a pretty good overclock from 2.4GHz to around 3GHz, and other people in the comments say they get pretty good overclocks too.

 

However my cpu only overclocks from 2.66GHz (stock) to 2.72GHz (my attempt). I overclock by having aida64 stress test in the background. Can u guys help me?

 

YouTube video: https://www.youtube.com/watch?v=ikHXAoitM8A&t=199s

 

PAG chipt: IDT model CV184-2APAG

 

specs:

Dell OptiPlex 780

Intel Core 2 Quad Q9400 6MB L2 cache 2.66GHz stock 45nm

8GB DDR2 1066MHz

EVGA GTX 1050

450W PSU

[Bananasplit_00]

have you tried more voltage

[Vishera]

5 minutes ago, IBM_THINKPAD_R51 said:

However my cpu only overclocks from 2.66GHz (stock) to 2.72GHz (my attempt).

What's stopping you from going higher?

Is it instability or a slider limit?

[IBM_THINKPAD_R51]

1 minute ago, Bananasplit_00 said:

have you tried more voltage

cant change that unfortunately

[IBM_THINKPAD_R51]

1 minute ago, Vishera said:

What's stopping you from going higher?

Is it instability or a slider limit?

the SYSTEM just freezes and crashes

[Guest]

9 minutes ago, IBM_THINKPAD_R51 said:

I overclock by having aida64 stress test in the background. Can u guys help me?

What do you mean? Stress test after it's overclocked, not while overclocking. 

 

Also it depends on the motherboard you are using aside from the CPU. It's not guaranteed to run anything above the stock speeds. You could also try OC'ing by increasing the FSB speed in the bios, not sure why you would need to use a program for that. 

[Vishera]

Just now, IBM_THINKPAD_R51 said:

the SYSTEM just freezes and crashes

You need more voltage.

But be careful,it can kill the CPU if you give it too much voltage.

[Guest]

1 minute ago, IBM_THINKPAD_R51 said:

the SYSTEM just freezes and crashes

Well this would just mean you went way to high or have too low core voltage. 

[IBM_THINKPAD_R51]

1 minute ago, Konrad_K said:

What do you mean? Stress test after it's overclocked, not while overclocking. 

 

Also it depends on the motherboard you are using aside from the CPU. It's not guaranteed to run anything above the stock speeds. You could also try OC'ing by increasing the FSB speed in the bios, not sure why you would need to use a program for that. 

its a dell prebuilt, so they dont allow u to overclock or change literally anything

[IBM_THINKPAD_R51]

i guess im stuck since theres no way i can change that

[Guest]

Just now, IBM_THINKPAD_R51 said:

i guess im stuck since theres no way i can change that

Have you looked into the bios? It's quite probable that you can in fact change that. 

[IBM_THINKPAD_R51]

1 minute ago, Konrad_K said:

Have you looked into the bios? It's quite probable that you can in fact change that. 

yep i already did, theres no setting for it.

theres no way a dell office pc prebuilt would allow you to overclock or change voltages

[Guest]

2 minutes ago, IBM_THINKPAD_R51 said:

its a dell prebuilt, so they dont allow u to overclock or change literally anything

Well in that case changing the FSB speed isn't going to help if you won't supply any more voltage. Keep it at stock, you would see little to no performance difference and this system is still very heavily CPU bottlenecked.