p4 1.8 ghz o'clock

[bwanaaa]

Using a th7II board with 512 mb samsung pc800 rdram, I cant change the multiplier of the p4 1.8ghz p4 (i set it to 20 , up from 18, in soft menu3-the bios setting app that the th7II uses, but wcpuid says I am still at 1.8ghz). I also tried to up the fsb from 100 mhz but the system crashes very early in the boot sequence (error C1) even with fsb increases as measly as 102 mhz. Why is the 1.6a chip so overclockable and this one isnt?

 

[Tates]

P4's are multiplier locked. Your P4 1.8 is locked at 18. Try increasing the CPU core voltage (between 1.5v and 1.7v) along with increasing the fsb for overclocking.

 

[AdamK47]

Oooooh Boy! That multiplier thing was a joke, right?

 

[PhoenixOfWater]

Originally posted by: AdamK47 - 3DS
Oooooh Boy! That multiplier thing was a joke, right?

I hope all of it is a joke.....
if not just do what Tates says

 

[THUGSROOK]

it probably isnt even a northwood

 

[10102BORG]

Its very difficult OC with Rambus memory. Do what Tates recommends and also try to increase the voltage to the memory, if possible. Good Luck........

 

[bwanaaa]

upped the volts to 1.75 and still the fsb is acting like a stick in the mud. 102 mhz gives it a seizure. Somewhere I read that I have to decrease the memory cycles from 4 to 3 - to get back to 400 mhz the fsb has to go to 133-but people have reported numbers up to 150 to 175 mhz for the fsb. Does this make sense to anyone here ? Of course the multiplier is laser locked on the chip, which is a northwood.

 

[CraigRT]

i increased my 1.8A's FSB from 100 to 150 without problems.. so it's doubtful 102 FSB is the CPU's fault.

 

[10102BORG]

In the other thread, I told him the limiting factor was his Rdram pc800......it was designed to run at FSB100 and not much more. Maybe if he can run the memory asynchronously or locked at FSB100.

 

[CraigRT]

Originally posted by: 10102BORG
In the other thread, I told him the limiting factor was his Rdram pc800......it was designed to run at FSB100 and not much more. Maybe if he can run the memory asynchronously or locked at FSB100.

i was thinking that is the problem
that is utterly useless.
reminds me of the KT133 chipset or the KX133 chipset that tops out at like 105.

retarded.

 

[jiffylube1024]

Originally posted by: Yield
i increased my 1.8A's FSB from 100 to 150 without problems.. so it's doubtful 102 FSB is the CPU's fault.

Yeah, but he is running the CPU at 1.75V, which means he either doesn't have a northwood, or his Northie is going to live a very short life with this huge voltage under stock cooling.

 

[bwanaaa]

by dropping the memory cycles from 4 to 3 , I was able to up the fsb to 110. this gave me 10% faster cpu in sandra (~ 4400->4800) but obviously a slower memory bandwidth. My guts cant tell the difference and boot time is no different. Oclocking rambus is a waste.

 

[CraigRT]

Originally posted by: bwanaaa
by dropping the memory cycles from 4 to 3 , I was able to up the fsb to 110. this gave me 10% faster cpu in sandra (~ 4400->4800) but obviously a slower memory bandwidth. My guts cant tell the difference and boot time is no different. Oclocking rambus is a waste.

boot time wouldn't be different
only differences you would actually see would be in FPS in games, SETI times, encoding times, that sort of thing.
boot times are affected my phyiscal memory, and hdd speed mainly. (with CPU's over 500MHz or so....)

 

[dbal]

Oclocking rambus is a waste.

Gee from all you ve written in the thread, I am definitely sure that
a. Your computer knowledge renders you the last person on earth that deserves to criticize RDRAM or any other pc technology
b. You will never be able to overclock a cpu even if you owned Thugsrook's old 1.6 northwood....
c. You were absolutely telling biiiiiiiiig lies about knowing that the multiplier is "laser locked":disgust: since you were trying to change it from the bios. No serious person in the world would ever deal with this option....

Why don't you go watch TV man?? It's much safer for all of us....:disgust: