Intel Core i7-1355U socket: BGA 1744
The Intel Core i7-1355U uses BGA 1744, a soldered BGA for Raptor Lake mobile processors with DDR4, DDR5 or LPDDR5 memory. The 10-core chip at 15 W with Iris Xe graphics cannot be replaced.
- Socket
- BGA 1744
- Launched
- January 4, 2023
- Cores and threads
- 10 and 12
- Base power
- 15 W
- Codename
- Raptor Lake-U
- Segment
- Mobile (soldered)
- Family
- Intel Core i7
- Clocks
- 1.7 / 5.0 GHz
Intel Core i7-1355U specifications
| Cores | 10 (2 Performance-cores plus 8 Efficient-cores) |
|---|---|
| Threads | 12 |
| Core architecture | Raptor Cove P-cores with Gracemont E-cores (Raptor Lake-U) |
| P-core clocks | 1.7 GHz base, up to 5.0 GHz turbo |
| E-core clocks | 1.2 GHz base, up to 3.7 GHz turbo |
| Cache | 12 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 15 W |
| Maximum turbo power | 55 W |
| Manufacturing process | Intel 7 |
| Memory support | DDR4-3200, DDR5-5200 or LPDDR5-6400, dual channel |
| PCI Express | PCIe Gen4 lanes from the CPU |
| Integrated graphics | Intel Iris Xe Graphics, 96 execution units, up to 1.3 GHz |
| Multiplier | Locked |
| Package | BGA 1744 soldered |
| Cooler in the box | None (laptop cooling) |
Motherboard compatibility
Intel Core i7-1355U needs a motherboard with a BGA 1744 socket. Chipset by chipset data for this codename is not recorded yet. See the BGA 1744 chipset list and the board maker's CPU support list.
BGA 1744 at a glance
| Type | BGA, 1,744 contacts |
|---|---|
| Package size | 50 × 25 mm |
| Introduced | December 2024 |
| Memory | DDR4-3200 and DDR5-5200 to DDR5-6400 SODIMM or soldered LPDDR4X-4267 and LPDDR5X-5200 to LPDDR5X-6400, two channels, up to 96 GB |
| Cooler mounting holes | Not applicable (soldered) |
What the Core i7-1355U is
The Core i7-1355U is the 10-core mainstream of Raptor Lake-U i7 for thin laptops from January 4, 2023. Two Raptor Cove Performance-cores with hyperthreading plus 8 Gracemont Efficient-cores give 10 cores and 12 threads, with P-cores at 1.7 GHz base and up to 5.0 GHz turbo. The package carries 12 MB of Smart Cache. Base power is 15 W with 55 W turbo for thin bodies with Essentials vPro management.
Iris Xe Graphics with 96 execution units to 1.3 GHz cover everyday display and streaming. Broad memory support from DDR4-3200 to LPDDR5-6400 lets makers tune price against bandwidth. High turbo keeps single-thread work close to 1365U at lower cost.
Mainstream premium buyers land here for i7 turbo at 15 W below 1365U pricing. Ten threads suit office suites plus creation, while P parts suit heavier multitasking. Boards that support Raptor Lake-U cover the family with the same firmware. The How to find your CPU socket type guide helps confirm BGA 1744 fit.
Socket and motherboard compatibility
The 1355U solders to BGA 1744 on thin laptop boards with no socketed path. Board makers set memory type and manageability firmware. BGA 1744 does not cross to LGA 1700 desktop boards. Maker pages list the BGA package as the fit reference.
Platform IO comes from the SoC plus board wiring, with NVMe, wireless and display outputs from the design. Factory firmware carries Raptor Lake-U support.
Memory, PCIe and cooling
DDR4-3200, DDR5-5200 or LPDDR5-6400 in two channels feeds CPU and Iris Xe graphics together. Soldered LPDDR5 suits thin bodies, while SODIMM suits serviceable fleets. Dual channel doubles graphics bandwidth.
PCIe Gen4 lanes wire NVMe plus wireless controllers. Cooling is a single pipe and blower for 15 W with short 55 W bursts.
Upgrade paths
No CPU change is possible on soldered BGA 1744. SODIMM and NVMe swaps move where slots exist, while soldered memory stays fixed.
Within Raptor Lake-U on BGA 1744 the step up is the 1365U with higher clocks. Outside thin power, P parts on BGA 1744 add threads with stronger cooling.
Frequently asked questions
What socket does the Core i7-1355U use?
BGA 1744 as a soldered BGA for Raptor Lake mobile processors. It cannot be removed or upgraded.
How is 1355U different from 1365U?
Same 10-core layout with slightly lower 1.7 GHz base and 5.0 GHz turbo plus Essentials vPro instead of Enterprise.
What graphics does the 1355U include?
Intel Iris Xe Graphics with 96 execution units to 1.3 GHz.
Does the 1355U support vPro?
Yes, Essentials vPro management features for business fleets.
Sources and verification
- Intel Core i7-1355U benchmarks and specs (Notebookcheck)
- Intel Core i7-1365U benchmarks and specs (Notebookcheck)
Facts last checked against these sources on . Page last edited on .