Zalman ALPHA28 Black CPU Liquid Cooler 280mm Radiator 2 x 140 mm Fan ARGB pump Dual
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Product details
The Zalman ALPHA28 CPU liquid cooler features a 280 mm radiator with two 140 mm addressable RGB fans and is designed for efficient thermal management in computer systems. This black cooling solution integrates an innovative triple water flow pump design that separates the coolant inlet and outlet into three distinct paths to minimize residual liquid and enhance cooling performance. The pump operates at 3,200 RPM, utilizes ceramic bearings, and delivers a water flow rate of 0.83 L per minute. The aluminum radiator measures 140 x 316 x 27 mm with heat dissipation fins designed for optimal airflow, while the two 140 mm fans feature durable bearings, adjustable speeds from 500 to 1,600 RPM, and maximum noise levels of 34 dB(A). The spherical pump housing design includes addressable RGB lighting effects that can be synchronized with compatible motherboard RGB controllers via 3-pin 5V RGB SYNC connectors, and an included ARGB controller allows for adjustments without motherboard RGB connections. The water block housing can be rotated 360 degrees for flexible tubing routing and logo orientation. Anti-vibration rubber pads reduce operational noise, and the package includes high-quality thermal paste. It is compatible with Intel LGA 2066, 2011-V3, 2011, 1700, 1200, and 115X sockets as well as AMD AM4 and AM3 sockets. The pump dimensions are 68 x 68 x 62 mm, made from ABS, PC, PPS, and pure copper. Each fan measures 140 x 140 x 25 mm with a maximum air pressure of 1.7 mm H₂O. The radiator supports push-pull configurations for optimal airflow, and mounting holes on both sides facilitate installation.
LED colour | ARGB |
CPU Water Cooling Type | AiO water cooling |
Socket | AM4, AM5, LGA 1150, LGA 1151, LGA 1154, LGA 1155, LGA 1156, LGA 1200, LGA 1700, LGA 2011, LGA 2011-v3, LGA 2066, Socket G3 |
Bottom plate material | Aluminium |
Number of fans | 2 Fan |
Fan dimension | 140 mm |
Item number | 35045726 |
Manufacturer | Zalman |
Category | CPU water coolers |
Manufacturer no. | ALPHA28 BLACK |
Release date | 17.5.2023 |
Colour | Black |
Exact colour description | Black |
LED colour | ARGB |
CPU Water Cooling Type | AiO water cooling |
Socket | AM4, AM5, LGA 1150, LGA 1151, LGA 1154, LGA 1155, LGA 1156, LGA 1200, LGA 1700, LGA 2011, LGA 2011-v3, LGA 2066, Socket G3 |
Bottom plate material | Aluminium |
Number of fans | 2 Fan |
Fan dimension | 140 mm |
Max. Speed | 3200 RPM |
Static pressure | 1.70 mmH20 |
Radiator thickness | 27 mm |
CO₂ emissions | 2 kg |
Climate contribution | CHF 0.11 |
Length | 140 mm |
Width | 170 mm |
Height | 185 mm |
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Reviews & Ratings
Warranty score
How often does a product of this brand in the «CPU water coolers» category have a defect within the first 24 months?
Source: Digitec Galaxus- ZalmanNot enough data
- 1.Xilence0 %
- 2.be quiet!0.8 %
- 3.Arctic0.9 %
- 3.Cooler Master0.9 %
Warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Digitec Galaxus- ZalmanNot enough data
- 1.Arctic0 days
- 2.Deepcool1 day
- 2.TRYX1 day
- 4.ASUS2 days
Return rate
How often is a product of this brand in the «CPU water coolers» category returned?
Source: Digitec Galaxus- ZalmanNot enough data
- 1.Phanteks3.1 %
- 2.Cooler Master4.2 %
- 3.TRYX4.3 %
- 4.Corsair4.4 %

