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co cpu how to

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Name: lightwalker
Date: July 10, 2005 at 17:44:31 Pacific
OS: xp pro sp2
CPU/Ram: lga p4 775 /ocz 512
Comment:

hello guys got a question i have a lot of function available to me with my mobo in regards to ocing i have managed to take my p4 3.0 to 3.4 but im sure i can get it further how can i see a lot of options (voltage dram so on so on) i have only messed with the extclk if you could help i would appreciate it thank a millon



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Response Number 1
Name: ...
Date: July 10, 2005 at 18:20:43 Pacific
Reply:

What's extclk? I'll answer as if you're using BIOS to overclock

I have a p4 3.0. I can easily overclock it to 3.7, but it's not prime stable. I like to keep it around 3.6. Not every CPU is the same though. Some overclock better, some don't.

Leave your voltages at their stock settings. Only increase them slowly to stabilize your overclock. dram voltage is the voltage being sent to your RAM. If you have generic stuff, then just leave it at the default voltage (2.5 or 2.6 i think). Some manufacturers make memory that require more juice...in that case, increase it.

Make sure the agp/pci is locked at 66.6/33.3 agp voltage should be left at the stock setting. Vcore voltage is for the CPU, and is the one you increase when your overclock is unstable.

Remember to increase it by 1 each time, and then test it for stability


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Response Number 2
Name: lightwalker
Date: July 10, 2005 at 19:33:58 Pacific
Reply:

thank for the info but i was more wondering on how to oc it higher than 3.4 extclk i believe stands for external clock (221 ,224 ext...) right now i have it set to 224 and the cpu ratio 15.0x im sure i canget it to run faster i am just wondering how any help please


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Response Number 3
Name: pheonix991
Date: July 10, 2005 at 20:12:51 Pacific
Reply:

hit plus on ur keyboard to increase the #. but if you hit a block, it more than likely is ur ram. esp if you have 3200. somehow i sqeezed out 222mhz from my kingston value ram. but with a p4, you can't increase the multiplyer. and the cpu to ram ratio, you want it to be 1:1, otherwise you will get a bottleneck from ur memory, or ur cpu. i finally got the ratio thing in my head thanx to jam.

p4 3.0ghz @ 222X15=3330mhz
512mb pc3200 dual channel @222mhz
80gb wd hdd/40gb seagate when on linux
8x agp geforce 6200 @ 530/585can't unlock extra pipes. plz help if you can
Audigy 2 ZS<


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Response Number 4
Name: lightwalker
Date: July 11, 2005 at 15:44:29 Pacific
Reply:

i have ocz pc500 512mb ddr2 i just want to get this to go faster


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Response Number 5
Name: lightwalker
Date: July 11, 2005 at 17:41:20 Pacific
Reply:

i have the option on my board to set the fsb to 1066 i managed to oc it to 3.825 but it is very unstable and i am getting nervous that i might damage my cpu or other hardware should i continue ocing it or should i leave it at 3.4ghz i like the sound of 3.8ghz but i dont want to take the risk of killing my machine also is it safe to run the fsb at 1066 while my cpu is suggested to run at 800mhz??? i have pc500 ddr2 what can i do to get a stable yet safe oc i have a killer board and decent ram help someone please...


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Response Number 6
Name: Free Weasel
Date: July 13, 2005 at 03:25:07 Pacific
Reply:

PC500 Ram should mean you can run it at 500
real MHz or 1000MHz Ram speed which is
always counted double because DDR Ram can
be read or written twice for every MHz.
That means it should run wihout problems up
to 250MHz FSB.
Just make sire you set a FSB to Ram Ration
of 1:1 to stay in range of your ram. To get
above those 1000MHz a slight raise of the
ram voltage may help and setting the CL
ratings one number higher will also help.
The higher voltage allows the Ram to switch
faster while the higher CL (CAS) setting
give it a little more time between each
operation.

About the CPU I suggest to raise it in
small steps and to run a benchmark like
3DMark 03 or 05 on it. If you start to see
any graphic failures the cpu is getting
unstable. Raise the VCore one step and
check again. If the problems are gone and
the cpu is still at a reasonable heat level
during or directly after the benchmark you
can try a few MHz more (3 to 5 - I tend
more to 3 with that multiplier).

The tricky thing is the VCore because a too
high setting my damage the cpu. But as long
as the cpu temperature stays below 60°C
under full use I think you should be okay.

As already mention the PCI/AGP clock is an
important thing. If you have a PCI lock set
it to 33MHz (or 33,33 to be exact) but if
you only have a FSB to PCI ratio try to
keep that as close to 33MHz as possible and
never above 37,5MHz. Above those 37,5MHz
you're very likely to run in trouble with
you pci card and onboard devices connected
by pci and your graphic card!
The AGP clock is always double of the PCI
clock.


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