|
Bravo Technology Center |
(CONTACT US) |
|
by: Sam C. Chan |
|
|
|
Last Revised: Februray 13, 2006 |
|
|
|
Bravo Analysis: Computer
Electricity Costs |
|
|
Unit |
Monitor |
LCD |
Workstation |
RAID Server |
Rate ($/kWH): |
|
Power (Watt) |
70 |
43 |
70 |
125 |
$0.10 |
|
|
|
|
|
|
|
|
Item |
Based on
these assumptions |
|
CRT |
Viewsonic G70F. Typical
high quality 17" CRT. |
|
|
|
LCD |
Viewsonic VG720. Typical
high quality 17" LCD. |
|
|
|
Workstation |
Bravo Sonata Celeron
2.93GHz 512M, 80G SATA 3x fans. |
|
|
|
RAID Server |
Bravo Encore P4 3.8G 2G
DDR, RAID 5 controller, 3x 300G SATA, 6x fans. |
|
|
Monthly |
21.5 average work days.
5-day work weeks. |
|
|
|
Annual |
250 days. 50 work weeks. |
|
|
|
Elec. Rates |
Niagara Mohawk.
Rochester, New York, USA. Summer 2005. |
|
|
|
|
Total
Electricity Costs in Different Modes of Operations ( 1 to 25 Stations) |
|
|
A |
B |
C |
D |
E |
|
Mon (Hours/Day) |
24 |
8 |
4 |
3 |
2 |
|
Sys (Hours/Day) |
24 |
8 |
6 |
4 |
3 |
|
Daily kWH |
3.36 |
1.12 |
0.70 |
0.49 |
0.35 |
|
1x Station |
|
Daily Cost |
$ 0.34 |
$ 0.11 |
$ 0.07 |
$ 0.05 |
$ 0.04 |
|
Monthly Cost |
$ 7.22 |
$ 2.41 |
$ 1.51 |
$ 1.05 |
$ 0.75 |
|
Annual Cost |
$ 84.00 |
$ 28.00 |
$ 17.50 |
$ 12.25 |
$ 8.75 |
|
Annual Savings |
$ 16.20 |
$ 5.40 |
$ 2.70 |
$ 2.03 |
$ 1.35 |
|
5x Stations |
|
Daily Cost |
$ 1.68 |
$ 0.56 |
$ 0.35 |
$ 0.25 |
$ 0.18 |
|
Monthly Cost |
$ 36.12 |
$ 12.04 |
$ 7.53 |
$ 5.27 |
$ 3.76 |
|
Annual Cost |
$ 420.00 |
$ 140.00 |
$ 87.50 |
$ 61.25 |
$ 43.75 |
|
Annual Savings |
$ 81.00 |
$ 27.00 |
$ 13.50 |
$ 10.13 |
$ 6.75 |
|
10x Stations |
|
Daily Cost |
$ 3.36 |
$ 1.12 |
$ 0.70 |
$ 0.49 |
$ 0.35 |
|
Monthly Cost |
$ 72.24 |
$ 24.08 |
$ 15.05 |
$ 10.54 |
$ 7.53 |
|
Annual Cost |
$ 840.00 |
$ 280.00 |
$ 175.00 |
$ 122.50 |
$ 87.50 |
|
Annual Savings |
$ 162.00 |
$ 54.00 |
$ 27.00 |
$ 20.25 |
$ 13.50 |
|
25x Stations |
|
Daily Cost |
$ 8.40 |
$ 2.80 |
$ 1.75 |
$ 1.23 |
$ 0.88 |
|
Monthly Cost |
$ 180.60 |
$ 60.20 |
$ 37.63 |
$ 26.34 |
$ 18.81 |
|
Annual Cost |
$
2,100.00 |
$ 700.00 |
$ 437.50 |
$ 306.25 |
$ 218.75 |
|
Annual Savings |
$ 405.00 |
$ 135.00 |
$ 67.50 |
$ 50.63 |
$ 33.75 |
|
Total
electricity costs include: System + CRT Monitor. |
|
Annual
Savings based on substituting CRT monitor with LCD monitor. |
|
|
|
Cost of
electricity to run a single unit of various devices |
|
Duty Cycle (Hours/Day): |
|
24 |
24 |
8 |
4 |
|
Device |
Wattage |
Daily |
Annual
(based on 365 Days) |
|
|
5 |
$ 0.01 |
$ 4.38 |
$ 1.46 |
$ 0.73 |
|
Dlink DI-624 |
10 |
$ 0.02 |
$ 8.76 |
$ 2.92 |
$ 1.46 |
|
|
20 |
$ 0.05 |
$ 17.52 |
$ 5.84 |
$ 2.92 |
|
Bravo Forte Router |
40 |
$ 0.10 |
$ 35.04 |
$ 11.68 |
$ 5.84 |
|
Bravo Workstation |
65 |
$ 0.16 |
$ 56.94 |
$ 18.98 |
$ 9.49 |
|
Bravo Basic Server |
90 |
$ 0.22 |
$ 78.84 |
$ 26.28 |
$ 13.14 |
|
Bravo RAID Server |
125 |
$ 0.30 |
$ 109.50 |
$ 36.50 |
$ 18.25 |
|
|
150 |
$ 0.36 |
$ 131.40 |
$ 43.80 |
$ 21.90 |
|
|
200 |
$ 0.48 |
$ 175.20 |
$ 58.40 |
$ 29.20 |
|
|
250 |
$ 0.60 |
$ 219.00 |
$ 73.00 |
$ 36.50 |
|
|
300 |
$ 0.72 |
$ 262.80 |
$ 87.60 |
$ 43.80 |
|
|
400 |
$ 0.96 |
$ 350.40 |
$ 116.80 |
$ 58.40 |
|
|
500 |
$ 1.20 |
$ 438.00 |
$ 146.00 |
$ 73.00 |
|
|
1000 |
$ 2.40 |
$ 876.00 |
$ 292.00 |
$ 146.00 |
|
|
Copyright
©2004-2006 Bravo Technology Center. All rights reserved. |
|
(CONTACT US) |
|
|
See
also: Bravo:GO |
|
|
|
|
|
|
|
|