Alphacool ES Stream LGA 4677 / SP5 LGA 6096 1U - Black (10230)

The Alphacool ES Stream LGA 4677 / SP5 LGA 6096 1U is a CPU water block for Intel LGA 4677 and LGA 4710 and for AMD SP5 (LGA 6096). It is built flat for 1U server and workstation systems, and the mounting brackets for the AMD socket are in the box. Four nozzles spread the water over the nickel-plated copper base, and the block is black with silver.

Properties

Intel sockets

LGA 4677, 4710

AMD sockets

SP5 (LGA 6096)

Cold plate

Nickel-plated copper, four nozzles

Top

Acetal

Ports

2 x G1/4

Size

118.50 x 75.50 x 20.50 mm

Fit

On the Intel socket the manual has you plug the CPU and its carrier together, set the cooler onto both and screw on the nuts. Alphacool's compatibility list names both makers, and its scope of delivery lists no carrier. We stock the E1A and E1B carriers for socket 4677, so check which one your processor uses.

With the supplied bracket the cooler now also supports the SP5 socket from AMD. Alphacool's instructions for it list two mounting brackets, two M3x6mm screws and six nuts. You remove the clamps from the cooler, attach the brackets and tighten the screw sleeves with a torque of 0.5 Nm. On either socket, clean the CPU, apply the thermal grease and remove the protective film from the cooler before mounting.

Four nozzles

This CPU water cooler, the ES Stream CPU Cooler, was specially developed for powerful processors on Intel's socket in server and workstation systems. What it names as the new feature: for the first time the water is distributed over the cooler base via four nozzles. With the help of this nozzle technology all cores of the processor are covered, optimally in Alphacool's words, and thus cooled more effectively and with greater precision. Thanks to the change from one to four nozzles, Alphacool says, the cooler is able to reliably dissipate waste heat of up to 600 watts.

Performance-oriented

The base has been optimized specifically for the large processor cores. Its nozzles are not milled, but naturally incorporated into the cooler. Alphacool calls the result an organic water flow, one that ensures a smooth flow and thus increases the cooling performance. The entire cooler is made of nickel-plated copper. Alphacool's reason is that copper has almost twice the thermal conductivity of aluminum. It is therefore the material Alphacool finds particularly suitable for server or workstation systems.

Optimized for space

Despite the large cooler base and the four nozzles, the block stays compact and flat. Alphacool's page says the connections are located on the side to save room, in order to mount it in server racks without any issues.

Thermal paste

The included thermal paste is Alphacool's Subzero, which has a thermal conductivity of 16 W/mK. This Thermal Grease is electrically non-conductive. Alphacool describes it as particularly well suited for high contact pressures. It says the paste can still be processed perfectly due to the viscosity of 3,000,000 mPa.s.

What the loop needs

The block has two G1/4 threads. They take the compression fittings for your tube size, which are not in the box. To run, it needs a pump and a radiator in the loop.

Technical data

In the box

• 1x ES Stream 1U CPU Cooler
• 2x Subzero Thermal Grease
• 1x Putty tool
• 4x Nut
• 6x Nut
• 4x Washer
• 2x Mounting bracket
• 2x M3x6mm Screw

Alphacool's manual, its SP5 mounting instructions and its data sheet are all PDFs. Its 3D model of the block is an STP file, and the 3D viewer shows it from every side.