Long beep followed by two short beep when overclocking.

geordiepaul

geordiepaul

geordiepaul

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7 Mar 2005
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I've been running my 3800 X2 AM2 CPU at 2.4Ghz at stock voltage for a while now without problems. Lately though I've been trying to get to 2.5Ghz.

Everything was going fine got up to 2.48Ghz still at stock voltage Primes it for ages, played company of heroes for ages, temp fine...pretty much all benchmarks had passed. But when I rebooted a got the bios beeping at me.....one long beep followed by 2 shorted ones! It only did this after running for a while. To get the system back I just reloaded my 2.4Ghz setting and all was fine.

At first I thought it was a GPU problem but thats not the code for the pheonix bios for the M2N32. I read some posts on other forums and it seems it's memory related. So when it happened again tonight (after a reboot) I knocked the memory down the it's slowed settings 333 divider or whatever it is and it booted at 2.48Ghz fine. But I then restarted it again and it started to beep again even at the lower mem setting! My feeling is that it might be temperature related but everthing seems fine. CPU is 30 idle and 40 under load, motherboard hovers around 40 degrees. These are pretty much constant from stock speeds! I have tried upping the voltage to the CPU and still get the same problem.

Anyone have any ideas how I can get round this? I get the feeling that my CPU wants more! Nearly 2.5ghz and stock voltage with good temps and no stability problems other than the above!

Spec is in sig!
 
Tried 2.2 and it makes no difference.

The thing I don't understand is that when at 2.2Ghz and the memory divider set at 800 I get an effective memory speed of 840mhz and that all runs fine and dandy!

At 2.48Ghz I have the memory divider set at 666 with and effective speed of 820mhz so it's actually running slower. So why the problems? What other effect does increasing the FSB have on memory?
 
I've increased the cpu voltage to 1.4 and the beeps stop! It appears that it's not memory related as the beeps would have you believe! though that does quite explain how it worked when reducing the memory divider!
 
One of the problems with A64 is saturating the memory controller. This means that your RAM might work at one speed for one CPU multiplier and RAM:CPU divider, but flake out at a higher multiplier, but lower RAM:CPU divider. A general guide is to watch the Sandra memory bandwidth scores - as you get to 9000 it will get harder and harder to keep RAM stability, no matter what the actual RAM speed. With massive tweaking I can get 9400/9400 with my Geil 800, but you need 1066 stuff to het up to 10,000 - the highest I've ever seen.


M
 
Meridian said:
One of the problems with A64 is saturating the memory controller. This means that your RAM might work at one speed for one CPU multiplier and RAM:CPU divider, but flake out at a higher multiplier, but lower RAM:CPU divider. A general guide is to watch the Sandra memory bandwidth scores - as you get to 9000 it will get harder and harder to keep RAM stability, no matter what the actual RAM speed. With massive tweaking I can get 9400/9400 with my Geil 800, but you need 1066 stuff to het up to 10,000 - the highest I've ever seen.


M
Click to expand...

What settings have you got yours at that speed?
 
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