Problem when overclocking 800 to 1066 P4T533-C

I am having trouble overclocking my Asus P4T533-C, 2.53 P4 with 4 PC800 256MB 184-pin Samsung memory, 800-40, MR16R1628DF0-CM8.

Evertime I change my RDRAM/FSB frequency from Auto to 4 my computer will only reconize 391 MB (should be 1GB). Sometimes my computer freezes. If I change my memory back to Auto, all is fine.

I think I am using the latest BIOS, Rev 1008.

Am I doing something wrong?

Do I need to change the jumpers?

My advance BIOS settings are:

CPU Speed -> 2.53 (Using Dacris, CPU tested at 2.25)
CPU Frequency multiplier -> 19 X
CPU/PCI Frequency -> 133/33
RDRAM/FSB Frequency -> Auto (Had problems with 4)

When I tested my memory using Dacris software it said my memory was too fast for my CPU. Should I change the mutiplier?

Any help would be much appreciated.

Regards,

Peterjedi

There's a reason PC1066 cost more than PC800, let's see if I can remember what it was...nope, sorry.

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Not likely, at 120MHz, his processor is running 1020MHz. That's an awefull stretch for anything less than a 1GHz processor.

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