Intel Core i7 1255U
Intel Core 12th Generation · Alder Lake-U
10 Cores
12 Threads
Up to 4.7 GHz
FCBGA1744
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An Alder Lake hybrid chip with ten cores and twelve threads at 15W — two performance cores and eight efficiency cores — the 1255U reflects Intel's shift toward hybrid designs even at the thin-laptop i7 tier.
A 4.7GHz boost clock and the heavy efficiency-core allocation make it well suited to background-heavy multitasking while keeping power draw in check for all-day battery life.
Highlights
10 Cores / 12 Threads
2 Performance-cores + 8 Efficient-cores.
RAM Support: DDR5 / DDR4
Supported memory generations. Soldered (LPDDR) or upgradeable depends on the laptop.
Intel Core 12th Generation Lineup
Intel Core i9 12900HX
16/24 @2.3GHz 55W
Intel Core i9 12900HK
14/20 @2.5GHz 45W
Intel Core i9 12900H
14/20 @2.5GHz 45W
Intel Core i7 12800H
14/20 @2.4GHz 45W
Intel Core i7 12800HX
16/24 @2GHz 55W
Intel Core i7 12700H
14/20 @2.3GHz 45W
Intel Core i5 12600H
12/16 @2.7GHz 45W
Intel Core i5 12600HX
12/16 @2.5GHz 55W
Intel Core i5 12500H
12/16 @2.5GHz 45W
Intel Core i5 12450H
8/12 @2GHz 45W
Intel Core i7 1280P
14/20 @1.8GHz 28W
Intel Core i7 1265U
10/12 @1.8GHz 15W
Intel Core i7 1260P
12/16 @2.1GHz 28W
Intel Core i5 1240U
10/12 @1.1GHz 9W
Intel Core i5 1240P
12/16 @1.7GHz 28W
Intel Core i5 1235U
10/12 @1.3GHz 15W
Intel Core i3 1215U
6/8 @1.2GHz 15W
Intel Core i3 1210U
6/8 @1GHz 9W
Benchmark Summary
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Specifications
Cores / Threads10 / 12
P-cores / E-cores2 / 8
Base Clock1.7 GHz
Max Turbo Frequency4.7 GHz
L3 Cache12 MB
TDP15W
SocketFCBGA1744
Memory SupportDDR5 / DDR4
PCIe SupportPCIe 4.0
Integrated Graphics
Intel Iris Xe Graphics (12th Gen)
Processor TypeLaptop
Launch DateQ1 2022
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Overall Score
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