Intel Core Ultra 7 155HL socket: LGA 1851
The Intel Core Ultra 7 155HL uses LGA 1851, the LGA socket for Meteor Lake-PS edge processors with DDR5-5600 and 20 PCIe Gen4 lanes. The 16-core chip at 45 W fits performance edge boards with vendor BIOS support.
- Socket
- LGA 1851
- Launched
- April 2024
- Cores and threads
- 16 and 22
- Base power
- 45 W
- Codename
- Meteor Lake-PS
- Segment
- Embedded
- Family
- Intel Core Ultra 7
- Clocks
- 1.4 / 4.8 GHz
Intel Core Ultra 7 155HL specifications
| Cores | 16 (6 Performance-cores plus 8 Efficient-cores plus 2 low-power E-cores) |
|---|---|
| Threads | 22 |
| Core architecture | Redwood Cove P-cores and Crestmont E-cores |
| Clocks | 1.4 GHz base, up to 4.8 GHz boost |
| Cache | 24 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 45 W |
| Manufacturing process | Intel 4 compute tile with Foveros packaging |
| Memory support | DDR5-5600, 2 channels, up to 96 GB |
| PCI Express | PCIe 4.0 x20 |
| Integrated graphics | Intel Arc Graphics, 128 EUs at up to 2250 MHz |
| NPU | Intel AI Boost |
| Multiplier | Locked |
| Package | FCLGA1851 (45.0 by 37.5 mm) |
Motherboard compatibility
Intel Core Ultra 7 155HL needs a motherboard with a LGA 1851 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 1851 chipset list and the board maker's CPU support list.
LGA 1851 at a glance
| Type | LGA, 1,851 contacts |
|---|---|
| Package size | 45.0 × 37.5 mm |
| Introduced | October 2024 |
| Memory | DDR5 only |
| Cooler mounting holes | 78 × 78 mm |
What the Core Ultra 7 155HL is
The Core Ultra 7 155HL is a 16-core and 22-thread edge processor that Intel launched in the second quarter of 2024 for demanding edge nodes. Six Performance-cores with 12 threads plus 8 Efficient-cores and 2 low-power E-cores run at 1.4 GHz base and up to 4.8 GHz boost. Cache is 24 MB of Smart Cache. Base power is 45 W with 65 W maximum assured, which holds multi-threaded vision and automation loads that starve on UL power.
Arc graphics with 128 execution units at up to 2250 MHz and an AI Boost NPU process camera streams near the source. Inspection with overlays, multi-display control rooms and on-prem transcription all benefit from the 24 MB cache holding working sets close. Shared DDR5 up to 96 GB keeps board cost below discrete-GPU designs.
Industrial PCs for automation cells and broadcast control fit here. Sixteen cores separate real-time control from UI and inference for steady timing. Buyers who need the last 0.2 GHz for peak bursts should take the Intel Core Ultra 7 165HL flagship instead, since this SKU trades a small clock gap for lower price.
Socket and motherboard compatibility
The 155HL fits LGA 1851 PS performance boards with 45 W to 65 W delivery. Desktop Arrow Lake chipset support does not extend to PS IDs, so industrial vendor lists control compatibility. The neutral sentence covers the board-specific case.
Performance edge ATX and Mini-ITX boards pair HL 16-core parts with DDR5 SODIMM, M.2 RAID and x16 slots for grabbers or accelerators. Power modes from 20 W minimum to 65 W maximum assured tune noise against speed. BIOS must list the 155HL ID from the PS branch.
HL 7-series shoppers compare the two 16-core parts on 0.2 GHz boost and GPU clocks. The 155HL trails the flagship slightly in bursts but matches it on cores and cache. The Socket vs chipset: what decides whether a CPU works guide explains the vendor-list model for edge LGA.
Memory, PCIe and cooling
DDR5-5600 up to 96 GB in two channels via SODIMM feeds 16 cores plus Arc and NPU. Large model weights and frame buffers should be planned together, since shared capacity is the ceiling. Dual-module kits are preferred for bandwidth to the 128-EU GPU.
PCIe Gen4 x20 in 3 by 4 plus 2 by 4 splits serves frame grabbers, NVMe and high-speed LAN. Edge boards fix splits per model, so capture plus accelerator combinations need manual lane checks.
Cooling is active 45 W with heatsink and chassis airflow to 65 W peaks. No retail cooler ships with tray edge supply. Sustained all-core speed tracks inlet temperature, so filtered intakes and rated fans preserve the 4.8 GHz boost behavior.
Upgrade paths
LGA allows HL-to-HL steps where listed, such as to the 165HL flagship for extra turbo. Memory and NVMe can also grow. Board power and BIOS must already cover the target.
The next generation is a newer edge platform with stronger NPU throughput. A working 155HL serves automation cells for years with drive care. Desktop LGA 1851 Arrow Lake is a separate board class.
Frequently asked questions
What socket does the Core Ultra 7 155HL use?
It uses LGA 1851 PS edge packaging for 45 W boards. Vendor lists decide support.
How many cores does the 155HL have?
Sixteen cores and 22 threads at 1.4 GHz base and up to 4.8 GHz boost, with 24 MB of cache at 45 W.
What graphics does the 155HL include?
Intel Arc with 128 execution units at up to 2250 MHz plus AI Boost NPU for vision and control.
What cooling does the 155HL need?
Active 45 W cooling with chassis airflow to 65 W peaks. Sealed boxes should use UL parts.
Sources and verification
- Intel Core Ultra processors Series 1 ARK list 155HL 16 cores 4.8GHz (Intel ARK)
- Intel Core Ultra Meteor Lake PS LGA1851 and Raptor Lake PS LGA1700 edge CPUs (Wccftech)
- Intel Core Ultra PS product brief LGA socket DDR5 PCIe (Intel)
Facts last checked against these sources on . Page last edited on .