EVGA SR-3 Dark (LGA3647): specs and features

ByMia Carla 2019-05-30 401

Since spring it is known that EVGA is working on an SR-3 Dark for the socket LGA3647. At Computex the board was presented in its final form. The SR-3 Dark supports the current Skylake SP processors for this socket - whereby the manufacturers define the CPU support via BIOS, the Xeon W-3175X with 28 cores is certainly the primary focus of the SR-3 Dark.
                   

The C622 from Intel is used as the chipset. It is used in the Purley platform and supports the Skylake SP processors as well as the new Cascade Lake models (2x Intel Xeon Platinum 8280 in test). Accordingly, it is expected that there will also be workstation successors based on Cascade Lake. Six DIMM slots are available. These accept DDR4-2666 - also ECC registered modules.

The two M.2 slots and two U.2 slots are directly connected to the processor's PCI Express lanes. A total of three Ethernet interfaces are implemented via Intel's X557-AT2 and i219LM PHYs. USB ports are offered with 8x USB 3.0 and one USB 3.1 Type-A and one USB 3.1 Type-C each. An ASMedia 3142 is used as USB controller. A Creative CA0132 takes care of the onboard sound.

The motherboard comes in the E-ATX form factor. The PCB with 16 layers is complex to manufacture. EVGA, however, allows many of the developments of the other motherboards to flow into the SR-3 Dark. These include the recessed connectors. In addition to 24-pin ATX, 4x 8-pin can also be connected. Whether this is necessary for normal operation or only extreme overclocking requires full equipment, we currently do not know.

Another focus of the SR-3 Dark is the power supply. 20 voltage phases take care of the supply of the processor (18 VCore, 1 VSA and 1 VCCIO). Three further voltage phases are responsible for supplying the memory. The chipset and the power supply are cooled via a pre-assembled water cooler. The two connections for the water circuit are located near the base. The water is led from there via the VRMs to the chipset.

Numerous fine cooling channels can be seen in the water cooler. These are designed to absorb the waste heat from the underlying components and then release it into the water. EVGA therefore completely does without a fan on the mainboard, but also requires an existing water cooling system.

We do not currently have any information on the availability and price of the EVGA SR-3 Dark. We have asked the manufacturer again and will complete the information if necessary.

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