Intel Core i7-1355U

The Intel Core i7-1355U is a high-end mobile CPU for thin and light laptops based on the Alder Lake architecture (Raptor Lake-U / RPL-U series). It was announced in early 2023 and offers 2  performance cores (P-cores, Golden Cove architecture) and 8 efficient cores (E-cores, Gracemont architecture). The P-cores support Hyper-Threading leading to 12 supported threads when combined with the E-cores. The clock rate ranges from 1.7 to 5 GHz on the performance cluster and 1.2 to 3.7 GHz on the efficient cluster. The performance of the E-cores should be similar to old Skylake cores (compare to the Core i7-6700HQ). All cores can use up to 12 MB L3 cache. The CPU supports "Essentials" vPro management features. Compared to the P-series (28W) or H-series (45W), the 15W TDP may limit the sustained performance.

Performance

Thanks to the high clock speed, the Core i7-1355U should perform slightly better than the older core i7-1265U (up to 4.8 GHz). The faster i7 like the i7-1365U models offer only higher clock rates (and a faster iGPU).

Architecture

The integrated memory controller supports various memory types up to LPDDR5-6400. The Thread Director (in hardware) can support the operating system to decide which thread to use on the performance or efficient cores for the best performance. For AI tasks, the CPU also integrates GNA 3.0 and DL Boost (via AVX2). Quick Sync in version 8 is the same as in the Rocket Lake CPUs and supports MPEG-2, AVC, VC-1 decode, JPEG, VP8 decode, VP9, HEVC, and AV1 decode in hardware. The CPU still only supports PCIe 4.0 x8 for a GPU and two PCIe 4.0 x4 for SSDs.

The integrated graphics card is based on the Xe-architecture and offers all 96 EUs (Execution Units) operating at up to 1.3 GHz.

Power consumption

This Core i7 CPU is rated at a TDP of 15W (base power, PL1) and a maximum turbo power of 55W (PL2). The RPL-U processors are built in a further improved Intel 7 process (10nm SuperFin) that allows higher clock rates.

Series	Intel Raptor Lake-U
Codename	Raptor Lake-U
Series: Raptor Lake-U Raptor Lake-U Intel Core i7-1365U 1.3 - 5.2 GHz 10 / 12  12 MB L3 Intel Core i7-1355U « 1.2 - 5 GHz 10 / 12  12 MB L3 Intel Core i5-1345U 1.2 - 4.7 GHz 10 / 12  12 MB L3 Intel Core i5-1335U 0.9 - 4.6 GHz 10 / 12  12 MB L3 Intel Core i5-1334U 0.9 - 4.6 GHz 10 / 12  12 MB L3 Intel Core i3-1315U 0.9 - 4.5 GHz 6 / 8  10 MB L3 Intel Core i3-1305U 1.2 - 4.5 GHz 5 / 6  10 MB L3 Intel Processor U300 0.9 - 4.4 GHz 5 / 6  8 MB L3
Clock Rate	1200 - 5000 MHz
Level 1 Cache	928 KB
Level 2 Cache	9.5 MB
Level 3 Cache	12 MB
Number of Cores / Threads	10 / 12
Power Consumption (TDP = Thermal Design Power)	15 Watt
Manufacturing Technology	10 nm
Max. Temperature	100 °C
Socket	BGA1700
Features	Thread Director
GPU	Intel Iris Xe Graphics G7 96EUs ( - 1300 MHz)
64 Bit	64 Bit support
Architecture	x86
Announcement Date	01/04/2022
Product Link (external)	www.intel.com

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