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Overclocking a P4 2.4B w/ a ASUS P4B533-E

L

LoCache

Member
I just got a new proc and motherboard, and I would like to overclock for the first time.

Read a lot of the old posts, but I still have a few unanswered questions.

My 2.4B has a 533 FSB and is of a BO vintage.

With my ASUS P4B533-E, how can I underclock the memory so it is not over-taxed as I increase the the External CPU frequency? It seems that I have a few settings for the CPU/Memory Frequency Ratio. Auto, 1:1, 4:3. Which one should I choose to overclock to about 2.6 or 2.8?

What do you think the Vcore will be around those speeds, so I have a rough estimate?

Do I need to play with the AGP/PCI settings?

What is the current best strategy to overclock the Intel BO chips? Theoritical maximum?

What should I look for in the Voltage readout, to make sure I have enough power getting to the processor? What are some things to watch out for?

Is there a way on the motherboard, or a software solution to automatically shut down if the temp gets too hot?

And my main question. How easy is it to BREAK one of these suckers?

Thanks.
 
With my ASUS P4B533-E, how can I underclock the memory so it is not over-taxed as I increase the the External CPU frequency? It seems that I have a few settings for the CPU/Memory Frequency Ratio. Auto, 1:1, 4:3. Which one should I choose to overclock to about 2.6 or 2.8?
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There is no way to underclock the memory as you up the External CPU frequency A.K.A FSB you are also up the mem speed
what speed mem do you have? if you don't want to over-taxed the mem then use 1:1 that will then the mem run at the same speed as the FSB
What do you think the Vcore will be around those speeds, so I have a rough estimate?
Click to expand...
Hard to tell, every chip is diff just keep up it as needed but just keep it under 1.8... anything higher will kill the chip
Do I need to play with the AGP/PCI settings?
Click to expand...
No, let it be locked at PCI 33/AGP 66
What should I look for in the Voltage readout, to make sure I have enough power getting to the processor? What are some things to watch out for?
Is there a way on the motherboard, or a software solution to automatically shut down if the temp gets too hot?
Click to expand...
Asus give software on the CD that come with the mobo that tell you all the info on the Temp of the chip and Voltage readout
And my main question. How easy is it to BREAK one of these suckers?
Click to expand...
If you give then chip to much Voltage and do not lock PCI/AGP settings at 33/66 then yes
but if you keep the chip Voltage under 1.8 and have your PCI/AGP settings locked then you be fine

EDIT: Yup THUGSROOK is right "4:3 ratio is underclocking..... 3:4 is overclocking"
Sorry I looked over it
 
Originally posted by: THUGSROOK
4:3 ratio is underclocking..... 3:4 is overclocking.
Click to expand...

however it depends how the bios is referring to the ratio as in cpu:ram or ram:cpu

usually ive seem it as cpu:ram, but of course i dont know everyboard 🙂
 
THUGSROCK, what are your AGP/PCI settings on the P4533 BIOS w/ your OC? What is the factory speed of your ram? What settings did you use to acheive 453 DDR?

Thanks for everybody's input.
 
what are your AGP/PCI settings?
70/35 locked

What is the factory speed of your ram?
PC3000/380ddr cas2-3-3-6 1x 256mb

What settings did you use to achieve 453 DDR?
im using 2.7v / cas2.5-3-3-7 / DS6 3:4 ratio trick ~ so far.
but i still have a lot of testing/tweaking to do ~ this cpu has a lot more in it 😉
 
THUGSROCK, Thanks for your information. Quick, question. What exactly does the AGP/PCI ratio do? How should I integrate changing that as I go up the steps in my OC to 2.8?

Do you think my 266 DDR Ram can handle that speed?

Is your P4 a C1? or BO?

Peace,

LoCache
 
Good news, my project has been off to a nice start and I am at 2.7g with a 150 FSB. It's stable after running Prime95 all night long. My Vcore is 1.525, and I am guessing I might be able to get to 2.9~3.0 with this proc.

I've got a single stick of 512 266 DDR, but it is currently running at 225 b/c I set the CPU/Mem ratio to 4:3 to prevent overtaxing the memory. 1:1 would make it signifigantly higher than it is rated. Besides I don't know what to change the mem voltage to, if I wanted to.

My AGP/PCI setting is "locked" at 66/33. I don't know exactly why this is the best setting but I am trusting Thugsrook and you guys. 😎

Here are my PCMark results so far:

CPU: 6158 up from 5593 factory
Mem: 4576 down from 5160 factory

Any suggestions on my config? Let me know.

BTW, what's the native AGP/PCI setting of the 533 motherboard?
 
Just a little FYI. His name is Thugsrook, not Thugsrock. althought I thought it said that the first few times I looked at it as well. 😉

the Native agp/pci settings are 66/33. That goes for any mobo. AFAIK.. That is what you meant right?
 
My AGP/PCI setting is "locked" at 66/33. I don't know exactly why this is the best setting but I am trusting THUGSROCK
Click to expand...

Your PCI bus is designed to run at 33 MHz and the AGP is designed to run at 66. Your PCI cards and AGP graphics cards are designed to run at these speeds, and do not run any faster at higher speeds, like your CPU and memory do. To the contrary, running these out of spec can cause system instability and if too far out of spec, can eventually damage your hardware.

Intel does realize there are overclockers out there, and decided to do something with their chipsets that would help us out. By offering an AGP/PCI lock, you can overclock without having to worry about a sensitive video card limiting your overclock or ending up with a corrupt hard drive from overclocking too far.
 
Although some AGP cards will run at higher speeds. I had my old BX board at a 124FSB with a 2/3 devider. Which is ....82mhz.. But like ketchup said. most like 33 and 66.
 
Originally posted by: Stallion
Just a little FYI. His name is Thugsrook, not Thugsrock. althought I thought it said that the first few times I looked at it as well. 😉

Apologies to Thugsrook. 😎
Click to expand...
 
Originally posted by: TenEgg
don't forget asus boards overvolts, so you're probably at around 1.575 vcore now...
Click to expand...



Does this overvolt show up in the Asus PCProbe monitor. I have seen the Vcore voltage up to 1.584. Or does it mean the *actual* overvolt is higher than this?
 
AsusProbe is probably right. It is probably set to 1.5 in the bios, but since the Asus overvolts, your CPU voltage is actually 1.58. Most motherboards undervolt (the voltage on my Epox is 1.46 when I am at default.)
 
My most recent results with this OC is 2.4 @ 2.8 with a 156 FSB. My voltage is around 1.65 plus the asus overvolts. I have PC2100 RAM.

I feel this proc has a little more in it, but my memory craps out at a higher FSB. Is there any settings I can change to get to 2.88 or even 2.9. Is 3.06 possible?

Memtest fails when it gets to 2.88, but if I set the 4:3 cpu to mem ratio, It seems to run stable, however it is very slow. Can I use this setting and then overclock the cpu higher? I am hesitant cause the volts are already a little high.

Would faster RAM be an answer? What kind of setting would I have to set to put DDR 333 in my motherboard? How about 400? What's the premiere RAM manufacturer?
 
If I were you, I would probably stay where I was. If you add much more voltage, your CPU will have a very short life. Intel says 1.75 is the max safe voltage for the BO Northwoods, and many people in this forum will tell you not to go above 1.7 actual. What is the vcore according to Asus Probe?

If you want good memory, you can't go wrong with Corsair, but for the money, I really like my Samsung.

 
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