Intel Xeon Platinum 8180 socket: LGA 3647
The Intel Xeon Platinum 8180 uses the LGA 3647 socket on C620 series server boards. It is a 28 core Skylake-SP flagship at 205 W with boost to 3.8 GHz.
- 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 8180 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 768 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 8180 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 8180 is
The Xeon Platinum 8180 is a twenty eight core, fifty six thread server flagship 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 socket nodes where maximum threads per rack matter.
Thirty eight point five megabytes of L3 cache feed twenty eight cores. The 2.5 GHz base keeps 205 W across many cores, while 3.8 GHz Turbo lifts lightly threaded database tasks. Three UPI links scale to eight sockets.
No integrated graphics are present. Six channel DDR4-2666 ECC up to 768 GB per socket suits virtual farms. Forty eight PCIe lanes per CPU handle networking and NVMe.
Intel priced the 8180 near $10,000 at launch as the Skylake-SP flagship. Clouds that needed maximum threads chose it before later generations. The 8180M variant doubles memory to 1.5 TB per socket for in memory work.
Socket and motherboard compatibility
The 8180 fits LGA 3647 on C620 Purley boards. Vendor BIOS must list 28 core 205 W SKUs for power delivery. Dual socket pairs scale to 56 cores per 2U node.
Boards expose six memory channels and 48 PCIe lanes per socket for flagship racks. Power stages for 205 W sustained loads decide board choice. The Socket vs chipset: what decides whether a CPU works guide covers server generations.
The Xeon Platinum 8180M on the same socket doubles memory to 1536 GB where datasets need it. The Gold 6154 trims cores where cost matters.
Memory, PCIe and cooling
DDR4-2666 ECC in six channels up to 768 GB per socket is the design. Twelve 64 GB DIMMs reach 768 GB on qualified boards. ECC protects tenants.
PCIe 3.0 with 48 lanes per CPU serves 25 GbE NICs and NVMe shelves. Dual socket UPI links carry socket traffic. Bifurcation follows board manuals.
Two hundred five watts need high flow 2U air or liquid. Data center cooling set points decide sustained all core pace.
Upgrade paths
On LGA 3647 the path is Cascade Lake-SP flagships on the same socket where BIOS allows it, with higher clocks and Optane support.
Past LGA 3647 the move is newer Xeon Scalable. Used 8180 nodes suit labs that want top Skylake-SP threads at low entry cost.
Frequently asked questions
What socket does the Xeon Platinum 8180 use?
It uses LGA 3647 on C620 series Purley server boards.
How many cores does the 8180 have?
Twenty eight cores with fifty six threads at 2.5 GHz base with up to 3.8 GHz Turbo.
What memory does the 8180 support?
DDR4-2666 ECC in six channels up to 768 GB.
How many PCIe lanes does the 8180 have?
48 PCIe 3.0 lanes from the CPU.
When did the 8180 launch?
July 2017 as the 1st Gen Xeon Scalable flagship.
Sources and verification
Facts last checked against these sources on . Page last edited on .