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overclocking p4 northwood problem?

post #1 of 9
Thread Starter 
i cannot seem to be able to overclock my processor more than 22%. that is a fsb at 245, and i can't get it to 250. it is not overheating for sure, because my processor never gets over 40C even on full load. most of the time it is around 35, even after playing CS:Source or HL2 or doom3 or quake 4 for hours. i tried stepping my vcore (the highest 5.6750). Do you guys know what the deal is?
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post #2 of 9
im kinda new to this but are you sure your ram isnt the problem? those speeds might be tough for your ram to handle. if your in 1:1 ratio between FSBRAM
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post #3 of 9
Quote:
i cannot seem to be able to overclock my processor more than 22%. that is a fsb at 245, and i can't get it to 250. it is not overheating for sure, because my processor never gets over 40C even on full load. most of the time it is around 35, even after playing CS:Source or HL2 or doom3 or quake 4 for hours. i tried stepping my vcore (the highest 5.6750). Do you guys know what the deal is?
I see that you are using a Western Digital Raptor disk drive, this will be connected using the Serial-ATA system.

Problem: There is a problem with the S-ATA frequency after approximately 240MHz FSB.

Reason: The S-ATA frequency will go out of range and will cause issues with the system.

Fix: There is a easy fix for this and this is to move your hard drive onto a locked S-ATA controller on your motherboard, this lock the S-ATA frequency at its default value, or else it will increase on conjunction with the systems FSB speed. Or just buy a IDE disk drive, or a S-ATA to IDE converter.

This is one thing that will cause problems and could be your issue, if not read on.

Problem: Memory speed operating higher than it can handle.

Reason: The memory speed has increased in conjunction with the FSB speed up to 490MHz.

Fix:
  1. Decrease the memory speed. The most logical way to do this is to set a "divider" this allows yoy to select a different memory speed to the FSB speed, when this is changed the memory speed will no longer increase in a 1:1 ratio with the FSB it may increase differently in a 4:5 ratio perhaps. In the BIOS there will be options to use dividers, find the one that keeps your memory at or below its recommended speeds.
  2. Increase memory voltage. This can be done in the BIOS and will allow your memory to operate at higher speeds, be very careful here though as this will heat up your RAM.
  3. Change manual/SPD timings. Your RAM will operate with certain latency values which can be changed to allow the RAM to operate better. Setting them lower reduces stablability but improves performance and setting them higher is vica versa.

If your RAM is over PC3200 (400MHz) for example its PC4000 (500MHz) then the above does not apply to you.

Other problems and fixes that are of lower importance:

AGP/PCI clocks, if these are not locked at 66.6MHz/33.3MHz then they will cause problems. These can be locked in the BIOS.

Chipset voltage, this is not critical but it can help for overall stablability, increase this perhaps by 0.1v and this will help overall at the higher speeds.

Please also post a picture of your BIOS so I can see your settings
post #4 of 9
Thread Starter 
I just set my ram to 266 (instead of 400), also locked my agp like you said (to 66) and overclocked my fsb to 250. I don't know if it is stable yet, but as you can see, i am typing this message, so at least i got it to go into windows, which i never could before.

i am going to run 3dmark05, and see if it can go through that.
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post #5 of 9
A divider is used to set the FSB : Memory, so if you're RAM is crapping out on you over 250 FSB, you could set a divider and make it run slower then your FSB.

To solve the issue with your SATA HDD -I'm not all too sure about this, but I think you need a PCI-SATA controller and lock the PCI freq
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post #6 of 9
Thread Starter 
I don't want to have to do that. Does anyone else know anything that I could do?

Quote:
Problem: There is a problem with the S-ATA frequency after approximately 240MHz FSB.

Reason: The S-ATA frequency will go out of range and will cause issues with the system.

Fix: There is a easy fix for this and this is to move your hard drive onto a locked S-ATA controller on your motherboard, this lock the S-ATA frequency at its default value, or else it will increase on conjunction with the systems FSB speed. Or just buy a IDE disk drive, or a S-ATA to IDE converter.
How do i know if it is locked on the mobo? does it say? do i do it in bios, or can i?
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post #7 of 9
The way I do it is by trial and error, try it in all of the S-ATA ports on your motherboard and see which one works best
post #8 of 9
Thread Starter 
i only have two sata ports. they are labeled (as you might guess) sata1 and sata2 (or sata0 and sata1 i can't remember). I don't even know if its the harddrive that is holding me back. what is a good voltage to have after 3.2Ghz?, or a FSB of 250 with a northwood
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post #9 of 9
Try something along the lines or 1.68v, don't exceed 55C on the thermal output though for safety reasons
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