The Alphacool ES 4U ServerRack has been specifically optimised to accommodate water cooling sets that can dissipate up to 2400W of waste heat in this enclosure. For this purpose, the enclosure not only offers a mounting frame for a maximum of one 3x120mm full copper radiator of the Alphacool NexXxoS series. The optionally available Alphacool ES 120 mm fans with PWM control ensure optimum cooling performance.
Drives
The 4U server rack offers mounting options for six 5.25" drives on the left and right side of the front. Six mounting positions for 2.5" drives are located in the upper area in the front. In the middle, three 3.5" drives can be mounted or an expansion tank including pump.
Mainboard
For mounting an SSI-EBB mainboard, all the usual screw connection options in the classic ATX format are available. This includes all mounting holes for Mini-ITX to EE-ATX. The case offers space for up to eight PCIe cards.
Water cooling for 2400W waste heat
With an appropriate water cooling system, up to 2400W of waste heat can be dissipated in this case. Alphacool offers special water cooling sets for this purpose, which can be individually configured and are delivered to the customer pre-filled. The mounting frame for the radiator and fans can be moved within the enclosure to suit any set-up.
Please note: The case comes without I/O panel. Alphacool offers a separate set of I/O panel and cable harness under item number 25054.
Note: The maximum height of the CPU cooler is 140mm
| Technical data | |
| Dimensions (L x W x H) | 736,85 x 478,50 x 177,8mm |
| Weigth (only case without common rails) | 17,22 kg |
| Form factor | 4U |
| Material | Galvanised sheet steel |
| Material thickness | 1,2 mm |
| Hose passage | 4 x 20 mm |
| Mainboard form factor | SSI-EEB: Mini-ITX, Micro-ATX, ATX, E-ATX, EE-ATX |
| Fan/radiator bracket | 3 x 120 mm |
| Color Case | Grey |
| Color Front | Black |
The EK-Pro CPU WB 4677 Rack Ni + Acetal is a dedicated enterprise-grade water block with 1U chassis compatibility specifically developed for LGA 4677 Intel® Xeon processors. The core of the new CPU water block was refined to manage the growing heat dissipation of new processors and to upgrade connectivity options for server rack requirements. The new server/workstation-grade CPU water block is compatible with 1U chassis type and suitable for use in server racks.

The EK-Pro CPU WB 4677 Rack Ni + Acetal water block features a total of 4 G1/8" threaded side ports for low-profile usage.
This enterprise cooling solution is built with performance, reliability, serviceability, and no compromises in mind. This water block meets these demands with top thermal performance and unparalleled connectivity, making it the perfect choice for liquid cooling high-density computing systems.
The EK-Pro CPU WB 4677 Rack Ni + Acetal water block features a precisely machined copper base (coldplate) made from the purest copper available on the market and is treated with nickel electroplating. The top is CNC machined from durable black POM Acetal, and the hold-down bracket is made of laser-cut stainless steel.
Intel® CPU socket compatibility:
- LGA 4677

Enclosed:
- EK-Pro CPU WB 4677 Rack Ni + Acetal Water Block
- 2x EK plug G 1/8”
- EK-Loop Multi Allen Key (6mm, 8mm, 9mm)
- 1x Torx T30 Key - 1x 5mm Allen Key
- Thermal grease (1g)


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