Dell OptiPlex 780 SFF Setup And Features Information Tech Sheet page 9

Power
Wattage
Maximum heat dissipation
NOTE:
Heat dissipation is calculated by using the power supply wattage rating.
Voltage (see the safety information
that shipped with your computer
for important voltage–setting
information)
Coin-cell battery
Physical
Height
Width
Depth
Weight
Environmental
Temperature:
Operating
Storage
Relative humidity
Mini-Tower — 305 W (non-EPA) or 255 W (EPA)
Desktop — 255 W
Small Form Factor — 235 W
Mini-Tower — 1041 BTU/hr
Desktop — 955 BTU/hr
Small Form Factor — 938 BTU/hr
Mini-Tower — 90–265 VAC, 50/60 Hz
Desktop — 90–265 VAC, 50/60 Hz
Small Form Factor — 90–265 VAC, 50/60 Hz
3V CR2032 lithium coin cell
Mini-Tower — 40.80 cm (16.10 inches)
Desktop — 11.40 cm (4.50 inches)
Small Form Factor — 9.26 cm (3.65 inches)
Mini-Tower — 18.70 cm (7.40 inches)
Desktop — 39.90 cm (15.70 inches)
Small Form Factor — 31.40 cm (12.40 inches)
Mini-Tower — 43.30 cm (17.00 inches)
Desktop — 35.30 cm (13.90 inches)
Small Form Factor — 34.00 cm (13.40 inches)
Mini-Tower — 11.70 kgs (25.80 lbs)
Desktop — 8.26 kgs (18.20 lbs)
Small Form Factor — 6.80 kgs (15.00 lbs)
10 °C to 35 °C (50 °F to 95 °F)
–40 °C to 65 °C (–40 °F to 149 °F)
20% to 80% (noncondensing)