Product comparison · 2 computer cooling systems

Zalman CNPS4X BLACK V2 vs Zalman CNPS9X OPTIMA2

Key differences

Fan diameter
- CNPS4X BLACK V2:9.2 cm
- CNPS9X OPTIMA2:12 cm
Rotational speed (max)
- CNPS4X BLACK V2:2000 RPM
- CNPS9X OPTIMA2:1500 RPM
Noise level (high speed)
- CNPS4X BLACK V2:29 dB
- CNPS9X OPTIMA2:29.5 dB
Maximum airflow
- CNPS4X BLACK V2:44 cfm
- CNPS9X OPTIMA2:47.12 cfm
Bearing type
- CNPS4X BLACK V2:Hydro Dynamic Bearing (HDB)
- CNPS9X OPTIMA2:Hydraulic
Number of fan blades
- CNPS4X BLACK V2:7
- CNPS9X OPTIMA2:9
Number of heat pipes
- CNPS4X BLACK V2:3
- CNPS9X OPTIMA2:4
Width
- CNPS4X BLACK V2:95 mm
- CNPS9X OPTIMA2:120 mm

Differences highlightedShow differences only

Comparison of CNPS4X BLACK V2, CNPS9X OPTIMA2
32 specifications	A Zalman CNPS4X BLACK V2 View product	B Zalman CNPS9X OPTIMA2 View product
Performance6 differ
Fan diameterDiffers	9.2 cm	12 cm
Supported processor socketsDiffers	LGA 1851, LGA 1700, Socket AM4, Socket AM5	LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1156 (Socket H), LGA 1200 (Socket H5), LGA 1700, LGA 2011 (Socket R), LGA 2011-v3 (Socket R), LGA 2066, Socket AM3, Socket AM4, Socket AM5
Rotational speed (max)Differs	2000 RPM	1500 RPM
Noise level (high speed)Differs	29 dB	29.5 dB
Maximum airflowDiffers	44 cfm	47.12 cfm
Bearing typeDiffers	Hydro Dynamic Bearing (HDB)	Hydraulic
Fan static pressureKnown for one	Unknown — not stated by the source	1.06 mmH2O
Design2 differ
Number of fan bladesDiffers	7	9
Number of heat pipesDiffers	3	4
Illumination LEDKnown for one	Unknown — not stated by the source	Yes
Poweridentical
Power consumption (typical)Known for one	Unknown — not stated by the source	3.72 W
LED voltageKnown for one	Unknown — not stated by the source	5 V
Rated currentKnown for one	Unknown — not stated by the source	0.31 A
Weight & dimensions4 differ
WidthDiffers	95 mm	120 mm
HeightDiffers	135 mm	155 mm
WeightDiffers	420 g	635 g
Fan dimensions (W x D x H)Differs	92 x 92 x 25 mm	120 x 120 x 25 mm
Packaging contentidentical
Mounting kitKnown for one	Unknown — not stated by the source	Yes
Screws includedKnown for one	Unknown — not stated by the source	Yes
Number of clipsKnown for one	Unknown — not stated by the source	2

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.