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New OC'er (me) needs help! 1055t. - Page 3

post #21 of 31
Uh... guys...
the mosfets are part of the VRMs which just regulate power to the CPU
You can't really overclock mosfets
post #22 of 31
Thread Starter 
So thats nothing to worry about?
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post #23 of 31
Nah, perhaps the proper word is "overvolting" mosfets (along with the CPU voltage) and with a proper mosfet system & cooling, this should be safe to do.
post #24 of 31
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
Nah, perhaps the proper word is "overvolting" mosfets (along with the CPU voltage) and with a proper mosfet system & cooling, this should be safe to do.
Do you mean proper MOSFET cooling or just overall cooling?

Thanks
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post #25 of 31
Quote:
Originally Posted by kingofyo1 View Post
if you really wanna over clock your mosfets,
How do you overclock mosfets ?

OP this guy is right if you want to overclock you will be looking to cover those Mosfets with a heatsink/s but not because you are overclocking them, because you cant 'at all'.

Mosfets regulate voltage to a point like a resistor and are quite often used in pairs, but with all things that provide resistance they also generate heat. So all you need to know is to keep them cool.

To overclock a non BE CPU it is best to start with the motherboard and start clocking with the North Bridge (On the MOBO, not the CPU/NB).
To do this you will need to reduce the multi of all components like CPU(x5) and RAM to the lowest you can go(x4).

To find out the highest the HTT/CPU REF/FSB will go, to do this is just the same as overclocking the CPU but you stick to the HTT/CPU REF/FSB/CPU Frequency and the NB voltage.
To test is basically the same as a CPU use Prime95 on large fft's, but if you get to a point of instability you don't add more voltage to the CPU but the NB.

Once you have found the MAX of the HTT/CPU REF/FSB and it's prime stable then you start to increase the CPU multi and then test as you would for a CPU once your unstable add more volts to the CPU and so on.

The same story for the RAM also.

But one thing to remember is that there is no such thing as a definitive set of settings, because everyone hardware is different. So the moral of the story is take the setting given by other members as a guide not a definite and play about with the settings a bit and make them your own.
Overclocking isn't just a flick of a switch and it works it's a art form, so have fun with it and learn a few things.
Edited by smash_mouth01 - 1/26/11 at 4:58am
post #26 of 31
Thread Starter 
Quote:
Originally Posted by smash_mouth01 View Post
How do you overclock mosfets ?

OP this guy is right if you want to overclock you will be looking to cover those Mosfets with a heatsink/s but not because you are overclocking them, because you cant 'at all'.

Mosfets regulate voltage to a point like a resistor and are quite often used in pairs, but with all things that provide resistance they also generate heat. So all you need to know is to keep them cool.

To overclock a non BE CPU it is best to start with the motherboard and start clocking with the North Bridge (On the MOBO, not the CPU/NB).
To do this you will need to reduce the multi of all components like CPU(x5) and RAM to the lowest you can go(x4).

To find out the highest the HTT/CPU REF/FSB will go, to do this is just the same as overclocking the CPU but you stick to the HTT/CPU REF/FSB/CPU Frequency and the NB voltage.
To test is basically the same as a CPU use Prime95 on large fft's, but if you get to a point of instability you don't add more voltage to the CPU but the NB.

Once you have found the MAX of the HTT/CPU REF/FSB and it's prime stable then you start to increase the CPU multi and then test as you would for a CPU once your unstable add more volts to the CPU and so on.

The same story for the RAM also.

But one thing to remember is that there is no such thing as a definitive set of settings, because everyone hardware is different. So the moral of the story is take the setting given by other members as a guide not a definite and play about with the settings a bit and make them your own.
Overclocking isn't just a flick of a switch and it works it's a art form, so have fun with it and learn a few things.
I had a little hard understanding what u mean because I'm pretty new to OC'ing. I guess I'll have to read it a couple of times

Besides, you mention that I should later on "...then you start to increase the CPU multi...".

I'm not running a BE, so this isn't possible?
Edited by Nikkopo - 1/26/11 at 5:27am
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post #27 of 31
Ok Ill try to break it down.

To overclock a non BE processor is to not be able to just increase the CPU multiplier, we have a limit to that multi. Which in our case is 14x.
We have to rely on other ways to get to higher overclocks,Our main way to Overclock is to increase the HT REF/FSB (Front Side Bus) "in Intels case" or in our case a CPU Frequency.
(Overclocking on our machines is a bit more detailed than say a Black Edition CPU which has a unlocked CPU multi, and we would just increase that)

Now what this does is increase the base clock, which in turn is the reference clock for all other devices on the motherboard and doing this will effect the other devices on the Motherboard like for eg: CPU,RAM,HT.
So when we overclock we have to start not from the "CPU multiplier" but the "CPU Frequency". Which in essence is the second half of the North Bridge.

To do this and to get high overclocks we push the "CPU Frequency/North Bridge" as high as we can go, but due to this being the base clock it effects everything.
So to overclock via the "CPU Frequency" we need to reduce the multiplier of everything else to a bare minimum so we don't go over the rated spec whilst testing for stability on the North Bridge.

When testing for stability of the North Bridge you use the same software as when testing the CPU "Prime95" on small FFT's (actually it's pretty much the same process) but one thing is different when you do get an instability instead of adding CPU voltage you add North Bridge voltage.

Once you have found that nice stable "CPU Frequency" say for eg: 285 MHz, then you start increasing the other multipliers back up to as close to original values piece by piece for eg: to begin with 5x then 6x and so on until the very highest where you would be upping the multi in half steps between testing eg: 11x, 11.5x, 12x, 12.5 stressing between each step and adding CPU voltage where needed.
You would start off with the CPU, you up the multiplier (to the max of x14) and test til unstable then add more voltage. Once you are happy then you would increase the ram to as close to stock speed as possible using the RAM divider/multiplies of In the RAMS case you will see the values x4, x5.33, x6.66, x8.00 and then test that to

These would be the first I would play about with, then I would move onto the CPU/NB (IMC Integrated Memory Controller) then I would try to up the ram speed or reduce the timings.
Edited by smash_mouth01 - 1/26/11 at 7:46am
post #28 of 31
Thread Starter 
Quote:
Originally Posted by smash_mouth01 View Post

To do this and to get high overclocks we push the "CPU Frequency/North Bridge" as high as we can go, but due to this being the base clock it effects everything.

.
So this is the same as "FSB"? Or am I just really confused? When you stated above that CPU Freq/NB is the base clock then I immediately thought of FSB because that's the base clock?

thanks in advance
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post #29 of 31
The CPU/NB is the Northbridge/Integrated Memory Controller clock, it is not the same as the FSB which should be called the "Ref Clock" on AMD systems (we're way past FSB now).
post #30 of 31
This ^^

The North Bridge and the CPU/North Bridge are two separate entities, half of it is on the motherboard the "North Bridge" then there is the other half the "CPU/North Bridge" which is found on the CPU which controls the communication to the RAM.

But what we want to focus on is the North Bridge which is the setting called "CPU Frequency" In MB Intelligent Tweaker (M.I.T) set of settings.
Edited by smash_mouth01 - 1/26/11 at 3:57pm
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