i7-1255U vs Celeron 2957U

Place in the ranking	2854	896
Place by popularity	not in top-100	74
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Alder Lake-M
Power efficiency	3.40	53.78
Architecture codename	Haswell (2013−2015)	Alder Lake-U (2022)
Release date	1 January 2014 (10 years ago)	23 February 2022 (2 years ago)
Launch price (MSRP)	$107	no data

Detailed specifications

Celeron 2957U 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	2 (Dual-core)	10 (Deca-Core)
Threads	2	12
Base clock speed	1.4 GHz	1.7 GHz
Boost clock speed	1.4 GHz	4.7 GHz
Bus rate	5 GT/s	no data
L1 cache	128 KB	80K (per core)
L2 cache	512 KB	1.25 MB (per core)
L3 cache	2 MB	12 MB (shared)
Chip lithography	22 nm	10 nm
Maximum core temperature	100 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Celeron 2957U 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	FCBGA1168	Intel BGA 1744
Power consumption (TDP)	15 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 2957U 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	no data
AES-NI	-	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Smart Response	-	no data
GPIO	+	no data
Smart Connect	+	no data
FDI	-	no data
AMT	9.5	no data
Matrix Storage	-	no data
HD Audio	+	no data
RST	+	no data

Security technologies

Celeron 2957U and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	no data
Secure Key	+	no data
OS Guard	-	no data
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 2957U and Core i7-1255U are enumerated here.

AMD-V	+	-
VT-d	-	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 2957U and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4, DDR5
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics for 4th Generation Intel Processors	Intel Iris Xe Graphics G7 96EUs ( - 1250 MHz)
Quick Sync Video	+	-
Clear Video	+	no data
Graphics max frequency	1 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron 2957U and Core i7-1255U integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-

Peripherals

Specifications and connection of peripherals supported by Celeron 2957U and Core i7-1255U.

PCIe version	2.0	4.0
PCI Express lanes	10	20
PCI support	-	no data
USB revision	3.0	no data
Total number of SATA ports	2	no data
Max number of SATA 6 Gb/s Ports	2	no data
Integrated IDE	-	no data
Number of USB ports	4	no data
Integrated LAN	-	no data
UART	+	no data

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.

Celeron 2957U 0.54

i7-1255U 8.53
+1480%

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.

Celeron 2957U 855

i7-1255U 13544
+1484%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Celeron 2957U 105

i7-1255U 1389
+1222%

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.

Celeron 2957U 55

i7-1255U 238
+333%

Gaming performance

Pros & cons summary

Performance score	0.54	8.53
Integrated graphics card	0.77	9.47
Recency	1 January 2014	23 February 2022
Physical cores	2	10
Threads	2	12
Chip lithography	22 nm	10 nm

i7-1255U has a 1479.6% higher aggregate performance score, 1129.9% faster integrated GPU, an age advantage of 8 years, 400% more physical cores and 500% more threads, and a 120% more advanced lithography process.

The Core i7-1255U is our recommended choice as it beats the Celeron 2957U in performance tests.

Should you still have questions on choice between Celeron 2957U and Core i7-1255U, ask them in Comments section, and we shall answer.