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Supermicro C9X299-PG300 (Intel X299) Motherboard Review

By: Steven Bassiri | Socket LGA 2066 in Motherboards | Posted: May 15, 2018 3:00 pm
TweakTown Rating: 94%Manufacturer: Supermicro

Packaging and Overview





The box is pretty normal, but the packaging is a bit different from what SuperO has done in the past, you get all accessories neatly packaged in an accessory box.




The accessory package includes four SATA6Gb/s cables, cable stickers, quick start guide, IO shield, driver DVD, and a SuperO case badge.




Supermicro put five fan headers on the C9X299-PG300, all of them are PWM headers that support up to 2.5A of current. You can control these headers through the BIOS or through SuperO Booster. We see that the motherboard has a unique heavy-duty aesthetic. For starters, everything is metal; there is no plastic on this motherboard. SuperO didn't cheap out when it comes to the shroud over the rear IO; it's solid metal. Under it is a silver heat sink that cools the 10Gbit NIC. The CPU has a single metal heat sink, and the PCH heat sink attaches to two M.2 heat sinks. The back of the motherboard features some POSCAP tantalum capacitors for the CPU VRM and some minor other ICs.




The rear IO panel features PS/2 keyboard/mouse, two USB 3.0 ports, three type-A USB 3.1 ports, a USB 3.1 type-C port, 1 Gbit NIC, 10 Gbit NIC, and 7.1 audio outputs with S/PDIF out.





The PCI-E allotment is as such; with a 44-lane CPU it's x16/x16/x0/x8 or x16/x8/x8/x8, and with a 28-lane CPU it will be x16/x8/x4/x0. Both M.2 slots have heat sinks that are screwed into the PCH heat sink; they are substantial. Both M.2 slots are x4 PCI-E 3.0, and according to the website, they support RAID0 and 1. We aren't sure on what switches with what, but we will update this article when we find out. Right now, the motherboard has six quick switches that shouldn't exist, and the bottom two slots shouldn't have any switches attached to them, but both have them, so we assume PCI-E from the CPU is switched between one of the M.2 slots and the slots and one of the U.2 ports and the slots.




The motherboard offers up six SATA6Gb/s ports and two U.2 connectors. At the bottom-right of the motherboard, we find a USB 3.0 internal header, TPM header, and a POST code display.




The VRM also gets two 8-pin power connectors. At the bottom of the motherboard, we find a USB 2.0 internal header, power and reset buttons and a clear CMOS button near the VROC key port.




SuperO has added two RGB LED headers on the motherboard located right next to the COM header. The heat sinks all make solid contact, and it turns out the rear IO cover has RGBs integrated inside.

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