Asrock Mobo / RAM problem

[pennysjp]

Hello,
First time 'builder' so bear with me if I'm being simple minded.
I have a 3 year old Dell XPS 430 whose Mobo died. Replaced it with an Asrock G41M-GS3 Mobo, fitted with my old Intel Q8200 core duo quad 2.3ghz processor. (Also changed to an ATX case). I am using 64 bit Windows 7 premium. I wanted to upgrade my RAM, and installed Crucial recommended CT2KIT51264BA1339 8GB, which runs at 1333mhz. According to the manual, the Asrock can accommodate that but needs a jumper adjustment. However, once assembled, I kept getting intermittent blue screens of various codes, with Windows update downloads failing and system subsequently rebooting. I could use the system, but there was no reliability. I swapped back to my old 1066mhz RAM (and adjusted jumpers back) and problems disappeared. Jumper position as Asrock manual.
Do you guys thinks it is just bad RAM from Crucial, or do I have to do more than adjust the jumpers to run 1333mhz on the Asrock Mobo.

 

[o1die]

Most 775 boards won't run stable above 1066; you can try overclocking the cpu if your board permits it, but stability isn't guaranteed. I would manually set the ram fsb at 1066 if you overclock and see if it holds at 1333. The overclock would be in the range of 25%, so if your cpu fsb is normally 200, try 250.

 

[pennysjp]

Sorry, I don't understand. If you set the ram fsb at 1066mhz, how can it run at 1333mhz?

My Asrock board says it supports ram at 1066, and at 1333 (OC) which I take is overclock (I am new at this). As my processor is 1333mhz, which speed ram would be best, 1066 or 1333 overclock?

 

[Xttony]

Just run the ram at 1066 MHz and you'll be fine. Overclocking the fsb can cause more crashes.
When you put the new cards in reset the bios. If you can get to the bios screen set all ram settings manually.

 

[pennysjp]

Thanks to all.