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Trying to get higher overclock on Sempron 145

post #1 of 12
Thread Starter 
I have attained 4.2ghz on my sempron 145 very easy. Stable prime95 for hours. I want to try an go higher but I need suggestions on the
NB and other voltages.

Right now only CPU has voltage increase to 1.52



Can I just keep increase cpu volt and clock?
post #2 of 12
1.52V is not safe for 24/7
Drop below 1.475V 24/7
Otherwise you have a nice overclock and you won't get much further anyway.

EDIT: What is your NB running at? Trying and get that to around 2400-2600Mhz that had a massive performance increase then overclocking on my Phenom II x4 955.
post #3 of 12
Thread Starter 
Quote:
Originally Posted by Socks keep you warm View Post

1.52V is not safe for 24/7
Drop below 1.475V 24/7
Otherwise you have a nice overclock and you won't get much further anyway.

EDIT: What is your NB running at? Trying and get that to around 2400-2600Mhz that had a massive performance increase then overclocking on my Phenom II x4 955.

NB is at 1800mhz. I can go higher no problem but I though it was bad to go over 2000?
post #4 of 12
Quote:
Originally Posted by CuriousNapper View Post

NB is at 1800mhz. I can go higher no problem but I though it was bad to go over 2000?
North bridge is were the performance is at mate! Overclock that sucker as high as you can go and don't go above 1.4v.
post #5 of 12
Thread Starter 
Now I am confused.

Cpu clock is how fast cpu can work, right?

I thought NB too high causes instability.
post #6 of 12
Quote:
Originally Posted by CuriousNapper View Post

Now I am confused.

Cpu clock is how fast cpu can work, right?

I thought NB too high causes instability.
CPU clock makes the performance faster, nb makes it even more faster.
post #7 of 12
If you have the cooling, then you can run the voltages as high as you want, (Try to keep it at 1.55V or under) but if your going to run it 24/7, you will start to see drgradeation in around 3 years, or maybe even 5 years, but you would probably upgrade long before then.

If you increase your Northbridge Clock, maybe around 2800MHz, you will get even more of a performance boost. Running it at a higher overclock increases the memory bandwith between the Memory and the CPU.

Keep the HT Link close to 2000MHz though!
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by Atomfix View Post

If you have the cooling, then you can run the voltages as high as you want, (Try to keep it at 1.55V or under) but if your going to run it 24/7, you will start to see drgradeation in around 3 years, or maybe even 5 years, but you would probably upgrade long before then.

If you increase your Northbridge Clock, maybe around 2800MHz, you will get even more of a performance boost. Running it at a higher overclock increases the memory bandwith between the Memory and the CPU.

Keep the HT Link close to 2000MHz though!

What kind of voltage would I be looking at to do 2800? I probably have to increase, yes?
post #9 of 12
Quote:
Originally Posted by CuriousNapper View Post

What kind of voltage would I be looking at to do 2800? I probably have to increase, yes?

You will need to overvolt the CPU-NB Voltage, not the motherboard NB Chipset voltage, make sure you overvolt the correct one first.

For 2800MHz, I'd say around 1.25-1.3V for a Sempron 145
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by Atomfix View Post

You will need to overvolt the CPU-NB Voltage, not the motherboard NB Chipset voltage, make sure you overvolt the correct one first.

For 2800MHz, I'd say around 1.25-1.3V for a Sempron 145

I will try and report!!

I wish I can e-mail you a beer.
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