Intel Xeon 6377P socket: LGA 1700

What the Xeon 6377P is

The Xeon 6377P is a 12 core server processor from Intel's Xeon 6 family, launched in the second quarter of 2026 under the codename Bartlett Lake. All 12 cores are Performance-cores with Hyper-Threading, giving 12 cores and 24 threads with no Efficient-cores in the layout. Cores run 3.1 GHz base with boost to 5.7 GHz against a 36 MB cache. Intel rates the base power at 95 W on the Intel 7 process.

On the codename record, Intel's ARK page files this processor under Products formerly Raptor Lake while independent silicon analysis identifies the 12-core P-core-only die as Bartlett Lake, and this page follows the silicon identification. The distinction matters because Bartlett Lake is the P-core-only branch for edge and embedded LGA 1700 systems, while Raptor Lake covers the mixed hybrid desktop stack. Treating the 6377P as Bartlett Lake puts it with its true platform siblings.

The chip targets single socket servers, network appliances and edge boxes that want high per-core speed without a large core count. Twelve fast cores with a 5.7 GHz peak suit packet processing, control plane software and lightly threaded business services, while the 95 W envelope fits compact chassis and existing LGA 1700 server boards. Intel lists the recommended price at $1045.

Memory support is DDR5-4800 across two channels to 128 GB with ECC, and expansion offers 20 PCIe 5.0 lanes for network cards and NVMe storage. There is no integrated graphics on this SKU, so consoles and setup need board level management such as a BMC rather than a display output.

Socket and motherboard compatibility

The 6377P fits the LGA 1700 socket in the FCLGA1700 package. It is a server processor rather than a desktop chip, so board support is board specific: single socket LGA 1700 server and embedded boards whose firmware lists the Xeon 6300 series accept it, while consumer 600 and 700 series desktop boards generally do not. A Supermicro C262 based Micro-ATX board, for example, documents support for the Xeon 6300 series including this chip from a stated BIOS revision with up to 95 W CPUs.

Memory on such boards is ECC UDIMM DDR5, up to 128 GB in typical four slot layouts at 4400 to 4800 MT/s depending on the board. The two channel controller matches small board layouts instead of the wide interfaces on bigger Xeon platforms. PCIe comes from the CPU's 20 Gen5 lanes, commonly wired as one x16 slot plus one x4 link with extra x4 and x8 combinations per board.

Single socket is the only configuration, since Intel specifies one socket for this processor. That keeps platform cost down and matches edge closets and branch offices where one machine does routing, firewalling or local services without clustering.

Memory, PCIe and cooling

Memory support centres on DDR5-4800 across two channels with ECC required in practice on server boards, up to 128 GB. The modest channel count and capacity fit the chip's role: fast cores with enough memory for appliances rather than large databases. Higher DDR5 speeds belong to the bigger Granite Rapids server platforms, not this socket.

For expansion the processor offers 20 PCIe 5.0 lanes in patterns such as 1x16 plus 1x4 or 2x8 plus 1x4, set by the board. A network adapter or accelerator takes the wide link while NVMe storage takes the narrow one, and 8 DMI lanes connect the board chipset for SATA and management traffic. Twenty lanes sound few beside an 88-lane server part, but edge boards rarely have slots to fill beyond that.

Cooling follows the board vendor's server heatsink guidance rather than any retail pattern. The 95 W envelope suits standard single socket air cooling in rack and compact chassis, with board firmware managing boost behaviour under sustained load. The CPU cooler compatibility by socket guide gives background on cooler patterns generally, while the exact heatsink choice here follows the board vendor list.

Upgrade paths

Within LGA 1700 the 6377P sits near the top of the Xeon 6300 series for clock speed, with its 5.7 GHz peak matching the fastest P-core-only parts on the socket. The 8-core Xeon 6369P below it trades cores and cache for a lower price, so the choice between them turns on thread count rather than per-core speed. Desktop Core processors on the same socket are a different branch entirely and do not belong in server board planning.

The realistic alternative to a faster chip on this platform is a bigger platform. Granite Rapids parts on LGA 4710 bring eight DDR5 channels, up to 88 PCIe 5.0 lanes and far higher core counts for virtualisation and databases. Moving there means a new board, new memory and new heatsinks, since nothing carries over between the two sockets.

For sites that stay on LGA 1700, the longer term path is board level: newer Bartlett Lake firmware, denser ECC UDIMMs and faster network adapters on the existing 20 lanes. When twelve cores stop being enough, the next step is a platform change rather than another chip in the same seat.