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24 May 2013 | #1 |
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incorrect system time (4 seconds off per minute)
Hi all!
We have two computers here with the same hardware and software (see below for details), and on one of them the internal timing is incorrect by ~6%, which can be observed in many different ways:
Do you have any idea which hardware component and/or system configuration entry is responsible for such behavior, and how it can be fixed? Thanks & kind regards, Markus P.S.: Here are some system details:
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My System Specs![]() |
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28 May 2013 | #2 |
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First of Please use this tool to update your profile specs for the comp that has the problem.
Second as far i can understand the CMOS RTC is losing voltage and based on bios version its almost 2 years old. As the battery drains, output voltage drops somewhat. Lower battery voltage can impair the accuracy of the RTC. Most lithium coin cell batteries are rated at 3 V; however, actual readings on a new battery are usually higher. If your system clock seems inaccurate (it runs slow, for example like you mentioned above), check the voltage on the CMOS battery. The highest accuracy is obtained if the battery voltage is maintained at 3.0 V or higher. Lithium batteries normally maintain a fairly steady voltage until they are nearly fully discharged, whereupon the voltage quickly drops. If you check the battery voltage and find it is below 3.0 V, consider replacing the battery, even if it is before the intended replacement time |
My System Specs![]() |
28 May 2013 | #3 |
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Quote:
If your system clock seems inaccurate (it runs slow, for example like you mentioned above)
Thanks & kind regards, Markus |
My System Specs![]() |
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28 May 2013 | #4 |
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Markus
The best way to confirm if you RTC is correct is to check the voltage of the battery Quote:
The highest accuracy is obtained if the battery voltage is maintained at 3.0 V or higher. If you check the battery voltage and find it is below 3.0 V....
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My System Specs![]() |
29 May 2013 | #5 |
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The "System Info" tool provided by SevenForums doesn't give much more information, it just says "Supermicro Base Board H8DCL 1234567890" (the version number is probably a fake). Thanks & kind regards, Markus |
My System Specs![]() |
29 May 2013 | #6 |
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Well there is no software .... its plain old voltmeter and rolling up you sleeves.....
As with everything in life... electronic parts are prone to die someday... if you want bet your life on RTC and live with it even after 3 years of using it .....be my guest... |
My System Specs![]() |
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