Intel Xeon Platinum 8180M socket: LGA 3647
The Intel Xeon Platinum 8180M uses the LGA 3647 socket on C620 series server boards. It is a 28 core Skylake-SP server chip at 205 W with boost to 3.8 GHz and 1.5 TB memory per socket.
- Socket
- LGA 3647
- Launched
- July 2017
- Cores and threads
- 28 and 56
- Base power
- 205 W
- Codename
- Skylake-SP
- Segment
- Server
- Family
- Intel Xeon Platinum
- Clocks
- 2.5 / 3.8 GHz
Intel Xeon Platinum 8180M specifications
| Cores | 28 |
|---|---|
| Threads | 56 |
| Core architecture | Skylake-SP on 14 nm |
| Clocks | 2.5 GHz base, up to 3.8 GHz Turbo |
| Cache | 38.5 MB L3 |
| Processor base power (TDP) | 205 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4-2666, six channels, up to 1536 GB with ECC |
| PCI Express | PCIe 3.0, 48 lanes from the CPU |
| Integrated graphics | None |
| Multiplier | Locked |
| ECC memory | Yes |
| Package | FCLGA3647 (76.0 × 56.5 mm) |
Motherboard and chipset compatibility
Intel Xeon Platinum 8180M needs a motherboard with a LGA 3647 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C620 series server | C621 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 3647.
LGA 3647 at a glance
| Type | LGA, 3,647 contacts |
|---|---|
| Package size | 76.0 × 56.5 mm |
| Introduced | 2016 |
| Memory | DDR4-2933 ECC, six channels, up to 2 TB |
| Cooler mounting holes | Board specific (narrow and square ILM heatsinks) |
What the Xeon Platinum 8180M is
The Xeon Platinum 8180M is a twenty eight core, fifty six thread server processor from Skylake-SP. It launched in July 2017 with a 2.5 GHz base and up to 3.8 GHz Turbo at 205 W. Twenty eight cores cover top dual and octal socket nodes where maximum threads per socket matter.
Thirty eight point five megabytes of L3 cache feed twenty eight cores. The 2.5 GHz base keeps power in check across many cores, while 3.8 GHz Turbo lifts lightly threaded work. Three UPI links scale to eight sockets per system designs.
No integrated graphics ship. Six channel DDR4-2666 ECC up to 1536 GB per socket is the M suffix difference, double the 768 GB of the non M 8180. Forty eight PCIe lanes per CPU handle accelerators and NVMe.
Intel aimed the 8180M at in memory databases that need 1.5 TB per socket. The M suffix commands a premium over the 8180 for large memory support. Locked multiplier keeps data center fleets uniform.
Socket and motherboard compatibility
The 8180M fits LGA 3647 on C620 Purley boards with BIOS for M suffix large memory SKUs. Board memory topology must support 128 GB DIMMs for 1.5 TB per socket. Check the vendor memory QVL before ordering large DIMMs.
Server boards carry six DDR4 channels and 48 PCIe lanes per CPU for flagship nodes. Power delivery for 205 W sustained loads decides board choice. The Socket vs chipset: what decides whether a CPU works guide covers Purley planning.
The Xeon Platinum 8180 on the same socket is the 768 GB counterpart where 1.5 TB is not needed. The Gold 6154 trims cores where cost matters.
Memory, PCIe and cooling
DDR4-2666 ECC in six channels up to 1536 GB per socket is the M suffix target. Twelve 128 GB DIMMs reach 1.5 TB per socket on qualified boards. Bandwidth peaks near 128 GB per sec with full populations.
PCIe 3.0 with 48 lanes per CPU serves networking and storage. Octal socket UPI topology follows board manuals. NVMe drawers hang off spare lanes.
Two hundred five watts need high flow 2U or liquid cooling with vendor heatsinks. Data center set points decide sustained boost.
Upgrade paths
On LGA 3647 there is no higher Skylake-SP above 28 cores, so growth means Cascade Lake-SP on the same socket where BIOS allows it, with DDR4-2933 and Optane options.
Past LGA 3647 the move is newer Xeon Scalable. Memory expansions usually precede CPU swaps for in memory workloads.
Frequently asked questions
What socket does the Xeon Platinum 8180M use?
It uses LGA 3647 on C620 series Purley server boards.
How many cores does the 8180M have?
Twenty eight cores with fifty six threads at 2.5 GHz base with up to 3.8 GHz Turbo.
What is the difference between 8180M and 8180?
The M suffix supports up to 1536 GB per socket, double the 768 GB of the non M 8180.
How many PCIe lanes does the 8180M have?
48 PCIe 3.0 lanes from the CPU.
When did the 8180M launch?
July 2017 with the 1st Gen Xeon Scalable lineup.
Sources and verification
Facts last checked against these sources on . Page last edited on .