Table 1. Comparison of carbon footprint assessment results and assumptions between the Dell PCF and PAIA methodologies for computers

Parameters	Dell PCF (n=26)	PAIA (n=99)
Range of carbon footprint (kgCO₂eq)	77.6~406	196~2,971
Manufacturing phase (%)^a	53±7.6	59±12
Use phase (%)^a	39±9	34±12
Transport phase (%)^a	5±2	7±8
EoL phase (%)^a	4±5	1±0
Main contributors	Mainboard, mechanicals	Mainboard, display
Linear relationship between carbon footprint of computer and main contributors (R²)	Electromechanicals (0.80), Mechanicals (0.77)	Chassis (0.78), Power supply unit (0.72), Display (0.74)
Range of Geekbench score	2,986~17,010	704~20,055
Range of solid state drive capacity (GB)	256~2,048	32~1,000
Range of DRAM capacity (GB)	8–64	8–16
Energy consumption (kWh/yr)	25.4~146	16.7~1,096.3
Total weight (kg)	1.1~9.7	0.6~24.7
Assumption of life span	Wyse 시리즈 2년, 나머지 4년	4년
Main components	11 main components (display, power supply unit, DRAM, etc.)	13 main components (battery, optical disc drive, materials, etc.)
Data sources	Primary or secondary data	Secondary data

평균 및 표준편차 값은 각각 Dell PCF 방법론이 적용된 24개 제품과 PAIA 방법론이 적용된 99개 제품을 대상으로 산출되었다.