PCI-AGP mulipliers and locking them does this mean you can overlcock as much as you want ?

P

Paul Mathews

Well as much as your ram will take and the mobo ?, like if you lock
the PCI to 33mhz and Agp to 66.

Just want to try to get my Mobile Athlon 2500 to go 240fsb and 12.5
muliplier :) i know thats 3000 mhz, but i have not seen any reviews of
overclocking the chip with pc4000 ram much be possible if you can get
ernough juice to the ram and keep the cpu cool, maybe water cooling ?

What AMD PR Rating would that be ?

I know you think iam crazy but you can do 2.7 ghz with pc2700 ram so
should be able to get some more and thats with 1.6volts.

Thanks for listening.
 
B

Ben Pope

Paul said:
Well as much as your ram will take and the mobo ?, like if you lock
the PCI to 33mhz and Agp to 66.
Click to expand...

With the PCI and AGP locked, you don't have to worry about all your
peripherals giving you problems.

The Northbridge, FSB (physically implemented on the motherboard), CPU and
maybe the RAM and bus are all that are going to hold you back.
Just want to try to get my Mobile Athlon 2500 to go 240fsb and 12.5
muliplier :) i know thats 3000 mhz, but i have not seen any reviews of
overclocking the chip with pc4000 ram much be possible if you can get
ernough juice to the ram and keep the cpu cool, maybe water cooling ?
Click to expand...

3GHz is not possible. There are limits, ok?

It takes a finite time to charge the transistors in the chip (since they
have a capacitance), and therefore you can only switch them so fast. In
order to charge them quicker, so you can clock them quicker you have to
increase the voltage, but heat and other factors will stop you doing this.
You will see very little gain after 2V Vcore, no matter how cold you get it.
Law of diminishing returns... (other factors come into play).
What AMD PR Rating would that be ?
Click to expand...

Hmm, extrapolating from the Bartons... 200MHz * 15 would be around 4360+
(3200+/2.2GHz*3GHz).

Now, you;d also have a faster FSB, 20% faster. If you take a 166MHz Barton
such as the 2500/1.83 = 1366. and compare that to a Barton with a 20%
faster bus: 3200/2.2 = 1450. Thats ~6% increase in PR rating for the 20%
increase in FSB, so I would guess around 4600+ for 240MHz*12.5 = 3GHz.
Thats all a bit academic though.
I know you think iam crazy but you can do 2.7 ghz with pc2700 ram so
should be able to get some more and thats with 1.6volts.
Click to expand...


Good luck. Not sure why the RAM has anything to do with the maximum clock
of the CPU... I would suspect the maximum clock of the CPU has more to do
with the CPU...

Ben
 
M

Michael Brown

[...]

Ah, just realised, Paul Mathews = We Live for the One we Die for the One

That could explain things ...

(*plonk*)
 
B

BigBadger

Ah, just realised, Paul Mathews = We Live for the One we Die for the One
That could explain things ...

(*plonk*)
Click to expand...


Well spotted.....That explains everything!!!!...another 'plonk'
 
M

~misfit~

Michael said:
[...]

Ah, just realised, Paul Mathews = We Live for the One we Die for the
One

That could explain things ...

(*plonk*)
Click to expand...

Yep, same troll, different name.
 
Top