"As an educational institution we do not support the search for E.T."

[pdog]

Bandwidth is not the main cost, it's running the CPUs at 100% for most of the day. A modern CPU at idle might consume 60 watts but at 100% take 160 watts. That 100w difference times 5000 machines makes for a big jump in the electricity bill. At 10c per kW/hr, that's $50/hr. If they were running 20 hrs a day, he was costing the district $1000/day.

[goof2]

Originally Posted by pdog

Bandwidth is not the main cost, it's running the CPUs at 100% for most of the day. A modern CPU at idle might consume 60 watts but at 100% take 160 watts. That 100w difference times 5000 machines makes for a big jump in the electricity bill. At 10c per kW/hr, that's $50/hr. If they were running 20 hrs a day, he was costing the district $1000/day.

I don't know how they work it so this is just speculation, but it makes an even larger difference if the computers were running all night vs. being shut down or hibernating when students aren't there.

[Papa_Complex]

Originally Posted by pdog

Bandwidth is not the main cost, it's running the CPUs at 100% for most of the day. A modern CPU at idle might consume 60 watts but at 100% take 160 watts. That 100w difference times 5000 machines makes for a big jump in the electricity bill. At 10c per kW/hr, that's $50/hr. If they were running 20 hrs a day, he was costing the district $1000/day.

I didn't even want to mention that possibility, as we then get into things like suspend and hibernation, which some places don't know enough to use.