but this time the PCIe lanes come directly from the CPU instead of from the chipset, providing lower latency GPU access. There’s another extra, as the CPU (chipset) has the option to use four additional PCIe lanes from the PCH dedicated to storage bandwidth, presumably to help with performance on fast SATA 6Gbps devices (e.g. SSDs). Given the 2x16 PCIe lanes for graphics and quad-channel memory, we can account for most of the pinout increase relative to LGA1366 and LGA1155, and adding in these remaining storage PCIe lanes with a DMI link to the chipset should take care of the rest. Intel doesn't state whether they're using DMI or QPI, but DMI 2.0 only provides up to 20Gbps between the CPU and chipset, so supporting 10 SATA 6Gbps ports with fast SSDs would certainly saturate that.