Product comparison · 2 power supply units

Chieftec SFX-250VS power supply unit vs Chieftec SFX-450BS power supply unit

Key differences

Total power
- SFX-250VS power supply unit:250 W
- SFX-450BS power supply unit:450 W
Input current
- SFX-250VS power supply unit:3 A
- SFX-450BS power supply unit:3.5 A
Combined power (+3.3V)
- SFX-250VS power supply unit:80 W
- SFX-450BS power supply unit:120 W
Combined power (+5V)
- SFX-250VS power supply unit:80 W
- SFX-450BS power supply unit:120 W
Combined power (-12V)
- SFX-250VS power supply unit:3.6 W
- SFX-450BS power supply unit:6 W
Max output current (+3.3V)
- SFX-250VS power supply unit:14 A
- SFX-450BS power supply unit:21 A
Max output current (+12V1)
- SFX-250VS power supply unit:18.5 A
- SFX-450BS power supply unit:36 A
Max output current (+5V)
- SFX-250VS power supply unit:15 A
- SFX-450BS power supply unit:22 A

Differences highlightedShow differences only

Comparison of SFX-250VS, SFX-450BS
32 specifications	A Chieftec SFX-250VS power supply unit Model SFX-250VS View product	B Chieftec SFX-450BS power supply unit Model SFX-450BS View product
Power9 differ
Total powerDiffers	250 W	450 W
AC input voltage	230 V	230 V
AC input frequency	50 Hz	50 Hz
Input currentDiffers	3 A	3.5 A
Power factor	0.9	0.9
Power Factor Correction (PFC) type	Active	Active
Combined power (+3.3V)Differs	80 W	120 W
Combined power (+5V)Differs	80 W	120 W
Combined power (-12V)Differs	3.6 W	6 W
Combined power (+5Vsb)	15 W	15 W
Max output current (+3.3V)Differs	14 A	21 A
Max output current (+12V1)Differs	18.5 A	36 A
Max output current (+5V)Differs	15 A	22 A
Max output current (-12V)Differs	0.3 A	0.5 A
Max output current (+5Vsb)	3 A	3 A
Efficiency	85%	85%
Ports & interfaces1 differ
Motherboard power connector	20+4 pin ATX	20+4 pin ATX
Number of SATA power connectors	2	2
Peripheral (Molex) power connectors (4-pin)Differs	2	1
ATX power connector (20+4 pin)	Yes	Yes
Floppy drive power connector	1	1
Cabling type	Non-Modular	Non-Modular
Performanceidentical
Purpose	PC	PC
Power supply unit (PSU) form factor	SFX	SFX
ATX version	2.3	2.3
Designidentical
Product colour	Silver	Silver
Fan diameter	8 cm	8 cm
Number of fans	1 fan(s)	1 fan(s)
Certificatesidentical
Certification	UVP; OVP; SCP; OPP; AFC;	UVP; OVP; SCP; OPP; AFC;
Weight & dimensions2 differ
WidthDiffers	100 mm	125 mm
DepthDiffers	125 mm	100 mm
Height	64 mm	64 mm

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.