Details
The Alphacool NexXxoS ST25 Full Copper 92mm Single Radiator is a radiator for one 92 mm fan, 25 mm thick, with end chambers, water channels and cooling fins made of copper. The thicker radiator in the same fan size is the XT45 Full Copper 92mm Single.
Properties
- Fans
- 1x 92 mm one-sided, 2x both-sided
- Size (L x W x H)
- 132 x 92 x 25 mm
- Thickness
- 25 mm
- Ports
- 2x G1/4
- Material
- copper cooling fins, chambers and cooling channels, brass threads, stainless steel outer housing
- FPI
- 15
Make No Compromises, Use Copper
As usual, Alphacool uses pure copper for the NexXxoS ST25 slim radiators: end chambers, water channels and cooling fins are all made of it. Alphacool calls that a unique selling point worldwide and says no other manufacturer relies on pure copper for all these components combined. As a result, it says, it has been producing one of the most popular and highest performing radiators on the market for many years. Alphacool sees them as providing the perfect foundation for every water cooling system. The company describes itself as internationally renowned in the field of water cooling solutions for both industrial and home users. To ensure that customers receive the best products available, it says, it is constantly developing new products and making improvements to existing products.
Full Cooling Capacity
To maximize the performance of a radiator, Alphacool says it reaches deep into its bag of tricks, and copper is the starting point. It gives a thermal conductivity of 400 W/(mK) for copper compared to 236 W/(mK) for aluminum and calls the winner clear. Alongside this is the special fin density. Alphacool describes itself as one of the oldest companies in the field of water cooling and says it has carried out countless laboratory tests. The result of those tests is a fin spacing of 15 FPI. This means that the air flow is only slightly obstructed, as the air can pass through even without high pressure. However, Alphacool says, the cooling capacity does not suffer from this, on the contrary. All cooling fins have small serrations to use the airflow optimally: tiny flaps that guide the airflow in the desired direction and increase the surface area. In the case of radiators they are barely 1 mm high, but they still provide controlled air turbulence, which Alphacool says helps to increase cooling capacity and minimize airflow noise.
Compact
The ST25 slim radiators offer what Alphacool calls the ideal liquid cooling solution for Mini-PCs or SFF (Small Form Factor) systems and for such small cases. Due to the extremely flat design and the reduced size, they give you the extra space you need to work in the case.
Safety first
Like the previous NexXxoS radiators, the ST25 has special protection that prevents fan or mounting screws from being screwed in too deeply. Protective plates have been placed under all mounting holes, which ensure the screws cannot be inserted too far. This protects the underlying cooling fins and water channels.
What the loop needs
The radiator has two G1/4 threads, so the loop takes two G1/4 fittings. The possible fan assembly is one 92 mm fan on one side or two with both sides in use. For mounting, the box holds four M3x30mm screws, four M3x6mm screws and an Allen key.
Technical data
| L x W x H | 132 x 92 x 25 mm |
| Quantity of cooling channels | 10 |
| FPI | 15 |
| Material cooling fins | Copper |
| Material chambers | Copper |
| Material cooling channels | Copper |
| Material threads | Brass |
| Material outer housing | stainless steel |
| G1/4 threads | 2 x |
| For fan size | 92 mm |
| Possible fan assembly | 1 x one-sided / 2 x both-sided |
| Pressure tested | 0.8 Bar |
| Max working temperature | 60 °C |
| Weight | 234 g |
| Color | Black |
Notes
- Use only clear, transparent water cooling fluids. Alphacool warns that the particles and additives in pastel liquids can clog and permanently damage water cooling products such as radiators, pumps, coolers and hoses, which can result in voiding the manufacturer's warranty as well.
In the box
- 1x Radiator
- 4 x M3x30mm screws
- 4 x M3x6mm screws
- 1x Allen key
Download Alphacool's data sheet, a PDF with the technical details. Its 3D model of the radiator is an STP file, and the 3D viewer shows it from every side.
