External Frequency Settings.

  diesel1948 09:18 21 Jul 2006

My computer has failed to boot on a number of occassions and then after several attempts gone into the bios settings. At the right hand side in red it said Caution: According to CPU external frequency setting, system memory can only operate at frequency higher than or equal to 333 MHz, please make sure the DRAM maximum frequency is not less than 333MHz. I noted that the memory frequency MHz was set to Auto, is it best to leave it alone or attempt to change it? if it is possible to do that. When I exited bios choosing to save changes, the computer booted ok. Thanks for any advice.

  keef66 09:29 21 Jul 2006

Leave it set to auto. It's obviously not the cause of your problems

  ed-0 09:31 21 Jul 2006

" I noted that the memory frequency MHz was set to Auto, is it best to leave it alone or attempt to change it? "

Either auto or spd is fine for most users.

Your system may have suffered a hiccup and rebooted with the bios defaults loaded. To be absolutely certain that your computer is running at it's maximum efficiency. Can you post the motherboard make and model. The details of your cpu and memory.

If you are unsure what they are, use SIW click here

  diesel1948 10:15 21 Jul 2006

Motherboard: manufacturer ASUSTek
Model A7v8X-X
Memory 1024 MB PC2700

Hope this tells you something.

  keef66 11:37 21 Jul 2006

Not sure I understand the warning though; PC2700 RAM runs at a MAXIMUM of 333mhz. Which Athlon cpu do you have?

  keef66 11:58 21 Jul 2006

Is your 1024 mb ram 2 x 512mb sticks, or is it a 512 + 2 x 256?

If the latter and all 3 slots are filled, that might be the problem.

The mobo manual says PC2700 max 4 banks which for DDR means 2 sticks, ie only 2 of the 3 slots filled.

  diesel1948 15:25 21 Jul 2006

I have 3 slots filled 2x256 and 1 512, the athlon cpu is 300TM XP. What would the answer to that problem be? Swap the 256s for a 512? Would the motherboard take more modern memory? can you mix different memorys or have they to be exactly the same? Drifting off the problem now but would 2 strips of 1024 DDR PC3200 • CL=3 • UNBUFFERED • NON-ECC • DDR400 • 2.6V • 128Meg x 64 make any significant improvements to this computer? I think the stuff in at moment is DDR PC2700 • CL=2.5 • UNBUFFERED • NON-ECC • DDR333 • 2.5V • 64Meg x 64.

  ed-0 15:57 21 Jul 2006

just got back in.

Ok. the warning you are getting is the result of the model of the motherboard and the cpu you are using. Theres nothing to worry about, but you must remember these facts about this board.

1) if you use a barton 333Mhz cpu, then you must use pc2700 memory.

2) if you do use pc2100 or pc3200 ram, then your cpu will not run at 333Mhz. The most it will run at is 266Mhz. So the cpu will run at just 80%.

3) if you get a problem and the computer boots to the bios screen, you will always get this warning.

4) don't use faster ram. It will slow down the speed of the cpu.

What it is with this motherboard. With a 333Mhz cpu, the memory must sync with the cpu to work at the correct speed. Use any other cpu frequency and you can use any type of memory.

  ed-0 16:10 21 Jul 2006

Nearly posted this morning, " is it a asus A7v8X-X " lol

I've built a few dozen with this motherboard and the number of requests about extra memory.

Here is the quote from the manual. click here

Just keep your cpu and memory running at 333Mhz in the bios.

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