Frequently Asked Questions Q: What amount of time drift is considered normal on the 955, 975 and 995 series servers?A: To a certain degree, real time clock (RTC) time variance is normal in most computers. It is difficult to gauge the potential variance of any computer's RTC due to the large number of external factors that affect accuracy. Subtle differences in the operating environment of the computer can impact the accuracy of an RTC. For example, the ambient temperature of its location is one of the most significant factors.
According to the design specification of the RTC utilized in the 955, 975 and 995 series server motherboard, +13/-18 minutes time drift per year is acceptable. This translates to approximately +2.14/-2.96 seconds per day or +15/-21 seconds per week.