Asus TusL2-C & Celeron 1.1a

The following set up is what I have. Does anyone know the proper settings for the following listed below that would

alow me to overclock the celeron 1.1a to the most stable level on the Asus Tusl2-c.



Asus TusL2-C & Celeron 1.1a
Bios v1012 (Tweaked)
Thermalright SK-6 + Delta 30 CFM Fan
Video Card = VisionTek GeForce3 Ti500 64 MB AGP
RAM = Crucial 2x256 PC133

What settings should I set for the following:

CPU Internal Frequency = Manual
CPU Frequency Multiple = Fixed at 11
FSB:SDRAMCI Freq Ratioo = [?:?:?]
FSB/SDRAM/PCI Freq (MHz) = [?/?/?]
CPU Vcore =


SDRAM Timing
SDRAM CAS Latency [?]
SDRAM RAS to CAS Delay [?]
SDRAM RAS Precharge Time [?]
SDRAM Cycle Time (Tras,Trc) [?,?]

Thanks

The two settings you will most likely want to tinker with is: CPU Internal Freq, CPU Vcore. Press enter where it says manual on the first one and up the frequency a few mHz at a time and test it. Do not go over 1.75 volts on the Vcore setting. Watch yer temps and all that. once done you can mess with the memory timings. Lower numbers in the mem settings usually mean performance. Depending on your memory will depend on what setting you can use. That chip may get you to 1.3 gHz with decent cooling. I have that mother board and a 1.2gHz that does 1.5gHz all day long on 1.675 vcore(to give you an idea of the chips potential). I hope this helps though its a bit short and perhaps vague so anyone that would like to add to this please feel free.

Zuzzz, thanks for the reply.

I'll give it a try.

Again thanks.

I have tested Celeron 1.4 then 1.1A, 1.2 and 1.3 CPU's.

1.1A can easily work at 1.5Volts with 133.9Mhz fsb giving 1473Mhz. (I have an Asus P3C-E Slot 1 Motherboard with Powerleap Adapter and moded Asus adapters.) The CPU revision was tA1 from 30th week.

If you overclock a Celeron 1.2, more than %50 of tB1 revisions can run at 1600Mhz but not the tA1 revisions. They need 1.5 to 1.65 Volts depending on the core quality. I have tested 2 of them with powerleap adapter and my modded Asus S370-DL and S370-133 Cards. One of the CPU's didn't run without the AK4 bridge and needed 1.65Volts. The other easily worked with 1.5Volts with all 3 CPU cards at 1600Mhz. Both of them were 43th week products.

Celeron 1.3 may work at 1740Mhz if you have the latest produced ones. (The week code probably needed to be 47 or later, I have tested 47, 50 and 51st week 2002 products.) The 47th week one worked with 1.75Volts at 1740Mhz. 50th week one worked with 1.6Volts at 1740Mhz and the 51st week one worked with 1.65Volts again at 1740Mhz.

I am using the 50th week one now 7/24 hours without a crash or unstability. Latest SiSoft Sandra 2004 gives my multimedia bench equal to a 2.5Gig P4 CPU. Others were good enough but 1.75Volt one goes over 50'C Degree that I didn't like. 1.6Volt one works fine at 41~42'C Degree. 1.65Volt one a couple of more Volts 42~45...

Finally I have first tested a 1.4 Cely with tA1 rev at 120fsb, 1680Mhz. This was an old 16th week 2002 product. (I have first purchased this one but, there is no possibility to run it at 1866Mhz. I have tried upto 2.0Volts.) With extreme cooling on tB1 revs may work. But, very difficult to run it stable 7/24.

I am using Rambus Ram's 2x256 PC-800 ECC from Kingston and don't want to go over 133.9 fsb. I do not recommend anyone to use over 133.9 because of stability problems. But I have tried upto 120fsb and 150fsb. Higher of those limits causes problems at all Asus boards because of capacitor regulation limits for power supplying. The 1500uf 6.3Volt Rubycon caps are better than 1500uf 6.3Volt Sanyo caps. If you have Sanyo caps at Voltage regulation area do not even get close to 120 and 150fsb. Surely you crash with Sanyo's. I have tested those caps and Rubycon (Blue) caps give 1500~1650uf values but Sanyo (Green) only managed 1300~1400uf power. Both 6.3Volt 1000uf Sanyo (Green) and Rubycon (Black) caps can only give 850~970uf of power. Therefore do not think that you have a 560SEC Mercedes or a Ferrari v8. These are desktop boards, not the server ones.

By the way, never try to replace those caps for modding, because they are special. All of them are low-esr caps and their life expectancies are guaranteed 3000 to 7000 insted 1000 to 2000 hours compared with standard 105'C degree caps from their manufacturers. They can only be replaced with low-esr ones, but very difficult to find. Only with trash boards caps if you know the work like me!

Bye...

Oh I made a mistake. The adapter I have is Upgradeware adapter, not the Powerleap one. I mix both brand names sometimes.

Sorry...

I'm using the asus tusl2-c and crucial cl2 ram. Now I have a 1.2G celeron runing at 1704 1.65V. I can run at 1800 stable but with the slower ram timing the 3D scores drop off. I get the best performance at 142fsb with cl2 timing on the ram. The 1.1 that I used before did 150fsb at 1.5V with the stock heatsink, the best 3D scores were at 142fsb. It might have run a higher fsb but my ram started getting fussy.