Intel Xeon Phi 7230F socket: LGA 3647
The Intel Xeon Phi 7230F uses the LGA 3647 socket on KNL server boards. It is a 64 core Knights Landing part at 1.3 GHz and 230 W with MCDRAM for fabric racks.
- Socket
- LGA 3647
- Launched
- October 2016
- Cores and threads
- 64 and 256
- Base power
- 230 W
- Codename
- Knights Landing
- Segment
- Server
- Family
- Intel Xeon Phi
- Clocks
- 1.3 / 1.5 GHz
Intel Xeon Phi 7230F specifications
| Cores | 64 |
|---|---|
| Threads | 256 (4 per core) |
| Core architecture | Knights Landing cores on 14 nm |
| Clocks | 1.3 GHz base, up to 1.5 GHz |
| Cache | 32 MB L2 (512 KB per core, no L3) |
| Processor base power (TDP) | 230 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4, six channels, up to 384 GB, plus 16 GB MCDRAM |
| PCI Express | PCIe 3.0, up to 36 lanes |
| Integrated graphics | None (server CPU) |
| Multiplier | Locked |
| ECC memory | Supported (DDR4) |
| Package | LGA 3647 (3647 contacts) |
Motherboard compatibility
Intel Xeon Phi 7230F needs a motherboard with a LGA 3647 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 3647 chipset list and the board maker's CPU support list.
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 Phi 7230F is
The Xeon Phi 7230F brings Knights Landing to LGA 3647 for fabric racks with stacked memory. It launched in October 2016 with 64 cores at 1.3 GHz base and up to 1.5 GHz boost at 230 W. Intel targets clusters that need bandwidth tuned cores with high power budgets.
Thirty two megabytes of L2 with 512 KB per core carry tiles without L3. Four threads per core give 256 threads. The mesh joins tiles, memory and I/O on die.
Sixteen gigabytes of on package MCDRAM deliver over 400 GB/s beside DDR4 pools up to 384 GB. The process is 14 nm. The multiplier is locked. AVX-512 units speed vector loops.
Buyers choose the board at order time with memory and cooling tier. The 230 W rating needs 2U airflow. MCDRAM runs as cache, flat NUMA or hybrid per job.
Socket and motherboard compatibility
The Xeon Phi 7230F fits LGA 3647 on KNL server boards with DDR4 slots. Makers list Knights Landing with late 2016 BIOS builds. Early stock may need an update.
Bootable host builds run Linux directly on the chip. The F suffix marks the 230 W variant of the 7230. The Socket vs chipset: what decides whether a CPU works guide covers matching.
Single socket HPC nodes are the deployment. Growth means more LGA 3647 nodes. Power needs metered racks for 230 W per socket.
Memory, PCIe and cooling
DDR4 in six channels up to 384 GB suits large jobs with ECC. Sixteen gigabytes of MCDRAM lift bandwidth bound loops. Test cache and flat modes per code.
PCIe 3.0 with up to 36 lanes from the CPU serves HBAs and NICs. Boards split lanes between risers and NVMe. Fabric options cut add in cards.
Cooling follows server practice with vendor heatsinks for 230 W classes. No cooler ships in the box. ECC guards DDR4 memory.
Upgrade paths
On the same socket, the Intel Xeon Phi 7230 shares 64 cores at the same clocks at 215 W for standard racks. The Intel Xeon Phi 7210F gives 64 value cores at 230 W. Both share LGA 3647 boards.
The Intel Xeon Phi 7250F moves to 68 cores at 230 W for denser nodes. It needs the same boards.
Past HPC nodes move to Xeon Scalable. The Phi 7230F covers late 2016 clusters where fabric racks need bandwidth tuned cores.
Frequently asked questions
What socket does the Intel Xeon Phi 7230F use?
It uses LGA 3647 on KNL server boards.
How many cores does the Xeon Phi 7230F have?
Sixty four cores with four threads each give 256 threads. Base is 1.3 GHz with boost to 1.5 GHz.
Which graphics does the Xeon Phi 7230F include?
None. Serial and network manage the node.
What memory does the Xeon Phi 7230F support?
DDR4 up to 384 GB plus 16 GB of on package MCDRAM.
When did the Xeon Phi 7230F launch?
October 2016 with Knights Landing parts.
Sources and verification
- Intel Xeon Phi x200 Product Family (Intel ARK)
- Intel Xeon Phi Knights Landing Processors List (SysRqmts)
Facts last checked against these sources on . Page last edited on .