Intel Core i7-1255U: specs and benchmarks
- Core clock speed
- Max video memory
- Memory type
- Memory clock speed
- Maximum resolution
Intel started Intel Core i7-1255U sales 4 January 2022. This is Alder Lake-U architecture notebook processor primarily aimed at office systems. It has 10 cores and 12 threads, and is based on Intel 7 manufacturing technology, with a maximum frequency of 4700 MHz and a locked multiplier.
Compatibility-wise, this is FCBGA1744 processor with a TDP of 15 Watt. It supports DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267 memory.
It provides poor benchmark performance at
of a leader's which is AMD EPYC 7H12.
Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and pricing.
|Place in performance rating||549|
|Series||Intel Alder Lake-M|
|Architecture codename||Alder Lake-U (2022)|
|Release date||4 January 2022 (less than a year ago)|
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
|Physical cores||10 (Deca-Core)|
|Base clock speed||1.7 GHz||of 4.7 (FX-9590)|
|Boost clock speed||4.7 GHz||of 5.8 (Core i9-13900K)|
|L1 cache||80K (per core)||of 1536 (EPYC Embedded 3401)|
|L2 cache||1.25 MB (per core)||of 12 (Core 2 Quad Q9550)|
|L3 cache||12 MB (shared)||of 32 (Ryzen Threadripper 1998)|
|Chip lithography||Intel 7 nm||of 5 (Apple M1)|
|Maximum core temperature||100 °C||of 110 (Atom x7-E3950)|
|64 bit support||+|
|Windows 11 compatibility||+|
Information on Core i7-1255U compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
|Number of CPUs in a configuration||1||of 8 (Opteron 842)|
|Thermal design power (TDP)||15 Watt||of 400 (Xeon Platinum 9282)|
Technologies and extensions
Technological capabilities and additional instructions supported by Core i7-1255U. You'll probably need this information if you require some particular technology.
|Instruction set extensions||Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2|
|Enhanced SpeedStep (EIST)||+|
|Flex Memory Access||+|
Processor technologies aimed at improving security, for example, by protecting against hacks.
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
Types, maximum amount and channel number of RAM supported by Core i7-1255U's memory controller. Depending on the motherboard, higher memory frequency may be supported.
|Supported memory types||DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267||of 5200 (Ryzen 5 7600X)|
|Maximum memory size||64 GB||of 786 (Xeon E5-2670 v3)|
|Max memory channels||2||of 12 (Xeon Platinum 9221)|
|ECC memory support||-|
General parameters of GPU integrated into Core i7-1255U.
|Integrated graphics card||Intel® Iris® Xe Graphics eligible|
|Quick Sync Video||+|
|Graphics max frequency||1.25 GHz|
Available interfaces and connections of Core i7-1255U's integrated GPU.
|Number of displays supported||4|
Graphics image quality
Maximum display resolutions supported by Core i7-1255U's integrated GPU, including resolutions over different interfaces.
|Max resolution over HDMI 1.4||4096 x 2304 @ 60Hz|
|Max resolution over eDP||4096 x 2304 @ 120Hz|
|Max resolution over DisplayPort||7680 x 4320 @ 60Hz|
Graphics API support
APIs supported by Core i7-1255U's integrated GPU, sometimes API versions are included.
Specifications and connection types of supported peripherals.
|PCIe version||4.0||of 5 (Core i9-12900K)|
|PCI Express lanes||20||of 128 (EPYC 7551P)|
Single-core and multi-core benchmark results of Core i7-1255U. Overall benchmark performance is measured in points in 0-100 range, higher is better.
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
- Cinebench 15 64-bit multi-core
- Cinebench 15 64-bit single-core
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 69%
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core (sometimes called Multi-Thread) is a variant of Cinebench R15 which uses all the processor threads.
Benchmark coverage: 14%
Cinebench 15 64-bit single-core
Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.
Benchmark coverage: 14%
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Overall Core i7-1255U performance compared to nearest competitors among notebook CPUs.
We believe that the nearest equivalent to Core i7-1255U by AMD is Ryzen 7 4700U, which is slower by 1% and lower by 5 positions in our rating.
Here are some closest AMD rivals to Core i7-1255U:
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended graphics cards
These graphics cards are most commonly used with Core i7-1255U according to our statistics.
Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.