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.
There is a problem with the S-ATA frequency after approximately 240MHz FSB.
The S-ATA frequency will go out of range and will cause issues with the system.
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.
Memory speed operating higher than it can handle.
The memory speed has increased in conjunction with the FSB speed up to 490MHz.
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:
- 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.
- 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.
- 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.
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