i7-1255U vs i3-11100B

Place in the ranking	987	881
Place by popularity	not in top-100	37
Market segment	Laptop	Laptop
Series	no data	Intel Alder Lake-M
Power efficiency	10.41	53.88
Architecture codename	no data	Alder Lake-U (2022)
Release date	1 April 2021 (3 years ago)	23 February 2022 (2 years ago)

Detailed specifications

Core i3-11100B and Core i7-1255U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	10 (Deca-Core)
Threads	8	12
Base clock speed	3.6 GHz	1.7 GHz
Boost clock speed	4.4 GHz	4.7 GHz
Bus rate	8 GT/s	no data
L1 cache	no data	80K (per core)
L2 cache	no data	1.25 MB (per core)
L3 cache	12 MB	12 MB (shared)
Chip lithography	10 nm SuperFin	Intel 7 nm
Maximum core temperature	100 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Core i3-11100B and Core i7-1255U compatibility with other computer components: 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	1
Socket	no data	FCBGA1744
Power consumption (TDP)	65 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i3-11100B and 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	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
FMA	-	+
AVX	-	+
vPro	-	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	+	-
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	+

Security technologies

Core i3-11100B and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i3-11100B and Core i7-1255U are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i3-11100B and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	Up to 3200 MT/s	DDR4, DDR5
Maximum memory size	128 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	45.8 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® UHD Graphics for 11th Gen Intel® Processors	Intel® Iris® Xe Graphics eligible
Quick Sync Video	+	+
Graphics max frequency	1.4 GHz	1.25 GHz
Execution Units	16	96

Graphics interfaces

Available interfaces and connections of Core i3-11100B and Core i7-1255U integrated GPUs.

Number of displays supported	4	4
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i3-11100B and Core i7-1255U integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096 x 2304@30Hz	4096 x 2304 @ 60Hz
Max resolution over eDP	4096 x 2304@60Hz	4096 x 2304 @ 120Hz
Max resolution over DisplayPort	4096 x 2304@60Hz	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core i3-11100B and Core i7-1255U integrated GPUs, sometimes API versions are included.

DirectX	12	12.1
OpenGL	4.5	4.6

Peripherals

Specifications and connection of peripherals supported by Core i3-11100B and Core i7-1255U.

PCIe version	3.0	4.0
PCI Express lanes	16	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

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.

i3-11100B 7.15

i7-1255U 8.54
+19.4%

Passmark

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.

i3-11100B 11357

i7-1255U 13566
+19.5%

Gaming performance

Pros & cons summary

Performance score	7.15	8.54
Recency	1 April 2021	23 February 2022
Physical cores	4	10
Threads	8	12
Power consumption (TDP)	65 Watt	15 Watt

i7-1255U has a 19.4% higher aggregate performance score, an age advantage of 10 months, 150% more physical cores and 50% more threads, and 333.3% lower power consumption.

The Core i7-1255U is our recommended choice as it beats the Core i3-11100B in performance tests.

Should you still have questions on choice between Core i3-11100B and Core i7-1255U, ask them in Comments section, and we shall answer.