Details
The Alphacool NexXxoS XT45 Full Copper 1260mm SuperNova Radiator is a 1260 mm radiator for nine 140 mm fans on one side or four 200 mm fans on the other. The cooling surface is 45 mm thick, and the radiator measures 441 x 422 x 48 mm overall and has three G1/4 threads.
Properties
- Fans
- 9x 140 mm front / 4x 200 mm back, M3 thread
- Size (L x W x H)
- 441 x 422 x 48 mm
- Thickness
- 45 mm cooling surface, 48 mm overall
- Ports
- 3x G1/4
- Material
- copper cooling fins, cooling channels and prechamber, brass threads, stainless steel outer housing
- Fins per Inch
- 12
Big, Bigger, SuperNova
The cooling surface is 400 x 400 x 45 mm, which Alphacool calls pure cooling surface. According to Alphacool no other radiator of its own offers as much surface area in a single product. It names this one "The king on the rads!" and says nothing else in Alphacool's portfolio can match the performance of the SuperNova radiator. With four 200mm or "a whopping nine" 140 mm fans and 40 x 40 cm of surface, Alphacool finds that it really does live up to the SuperNova name.
Make No Compromises, Use Copper
As usual, Alphacool also uses pure copper for the NexXxoS 1260 SuperNova Radiator. The end chambers, the water channels and the cooling fins are all made of it, which Alphacool calls a unique selling point worldwide. As a result, it says, its radiators have been among the most popular and best on the market for many years. In its words they are providing "the perfect foundation for every water cooling system".
Full Cooling Capacity
Alphacool says it reaches deep into its bag of tricks to maximize the performance of a radiator, and that copper is the starting point. It gives a thermal conductivity of 400 W/(mK) for copper compared to 236 W/(mK) for aluminum, and for Alphacool the winner is clear. Alongside this is what it calls 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, especially for such large radiators, is a fin spacing of 12 FPI. This means the air flow is almost unobstructed, as the air can pass through even without high pressure. However, Alphacool says, the cooling capacity does not suffer from this, on the contrary. To use the airflow optimally, all cooling fins have small serrations: these are 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 Alphacool says they still provide controlled air turbulence to increase cooling capacity and minimize airflow noise.
Which fans?
On one side the radiator offers room for four 200 mm fans with a hole spacing of 154 mm. On the opposite side, another mounting plate lets up to nine classic 140 mm fans be mounted. Alphacool's table calls the 140 mm side the front and the 200 mm side the back, with nine fan slots front and four back. If you want to operate the radiator passively, you can remove both mounting plates, and this will ensure you do not obstruct the natural airflow. Of course, Alphacool adds, the mounting plates for both types of fans can also be interchanged, which gives you more freedom when mounting the fans. Its data sheet calls this a detachable mounting frame.
Connection options
The radiator offers two G1/4 threads for IN and OUT. A further G1/4 thread on the back of the radiator serves as a fill port. Alternatively, Alphacool notes, a temperature sensor or a drain port can also be attached here.
What the loop needs
Of the three threads a loop uses two, IN and OUT, so the radiator takes two G1/4 fittings. The third takes the stop plug in the box when it is not in use as a fill port. The thread size for fan mounting is M3, and the box holds 36 M3x30 screws and an Allen key for the 140 mm fans or the 200 mm ones. Both mounting plates come preassembled. The manual gives two steps: unscrew all screws in the fan cover, then attach the fan and the mounting plate to the radiator with the M3x30 screws.
Weight and certificates
The net weight is 4225 g, and the data sheet gives 4900 g for the packed unit. It lists the certificates CE, FC and RoHS.
Technical data radiator
| L x W x H | 441 x 422 x 48 mm |
| Quantity of cooling channels | 68 |
| Material cooling fins, pre-chambers & channels | copper |
| Material threads | brass |
| Material outer housing | stainless steel |
| Threads | 3x G1/4 |
| Possible fan size | 140 mm front / 200 mm back |
| Possible fan assembly | 9 front / 4 back |
| Thread size fan mounting | M3 |
| Pressure tested | 0.8 Bar |
| Maximum working temperature | 60 °C |
| Fin density | 12 FPI |
| Weight | 4225 g |
| Color | black |
Notes
- Use the radiator only with 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. It adds that this can void the manufacturer's warranty as well.
In the box
- 1x Alphacool NexXxoS XT45 Full Copper SuperNova Radiator, black
- 36x M3x30 Screws
- 1x Allen Key
- 1x stop plug
- 1x fan mounting bracket for 140mm fan 420 x 420mm
- 1x fan mounting bracket for 200mm fan 420 x 420mm
Download Alphacool's manual and data sheet, both PDF files. Its 3D model of the radiator is an STP file, and the 3D viewer shows it from every side.
