i7-1255U vs Celeron G1840

VS

Aggregate performance score

Celeron G1840
2014
2 cores / 2 threads, 53 Watt
1.12
Core i7-1255U
2022
10 cores / 12 threads, 15 Watt
8.54
+663%

Core i7-1255U outperforms Celeron G1840 by a whopping 663% based on our aggregate benchmark results.

Primary details

Comparing Celeron G1840 and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2392885
Place by popularitynot in top-10037
Cost-effectiveness evaluation1.35no data
Market segmentDesktop processorLaptop
Seriesno dataIntel Alder Lake-M
Power efficiency1.9653.88
Architecture codenameHaswell (2013−2015)Alder Lake-U (2022)
Release date1 May 2014 (10 years ago)23 February 2022 (2 years ago)
Launch price (MSRP)$53no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Celeron G1840 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 cores2 (Dual-core)10 (Deca-Core)
Threads212
Base clock speed2.8 GHz1.7 GHz
Boost clock speed2.8 GHz4.7 GHz
Bus rate5 GT/sno data
L1 cache64 KB (per core)80K (per core)
L2 cache256 KB (per core)1.25 MB (per core)
L3 cache3 MB (shared)12 MB (shared)
Chip lithography22 nmIntel 7 nm
Die size177 mm2no data
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistors1,400 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Celeron G1840 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 configuration11
SocketFCLGA1150FCBGA1744
Power consumption (TDP)53 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron G1840 and Core i7-1255U. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI-+
FMA-+
AVX-+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology-no data
Hyper-Threading Technology-+
TSX-+
Idle States+no data
Thermal Monitoring++
Flex Memory Accessno data+
Deep Learning Boost-+

Security technologies

Celeron G1840 and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Key++
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron G1840 and Core i7-1255U are enumerated here.

VT-d-+
VT-x++
VT-i-no data
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron G1840 and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4, DDR5
Maximum memory size32 GB64 GB
Max memory channels22
Maximum memory bandwidth21.3 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel HD Graphics for 4th Generation Intel ProcessorsIntel® Iris® Xe Graphics eligible
Max video memory1.7 GBno data
Quick Sync Video++
Clear Video HD+no data
Graphics max frequency1.05 GHz1.25 GHz
Execution Unitsno data96

Graphics interfaces

Available interfaces and connections of Celeron G1840 and Core i7-1255U integrated GPUs.

Number of displays supported34
eDP+no data
DisplayPort+-
HDMI+-
DVI+no data
VGA+no data

Graphics image quality

Maximum display resolutions supported by Celeron G1840 and Core i7-1255U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.41920x1080@60Hz4096 x 2304 @ 60Hz
Max resolution over eDP2560x1600@60Hz4096 x 2304 @ 120Hz
Max resolution over DisplayPort2560x1600@60Hz7680 x 4320 @ 60Hz
Max resolution over VGA1920x1200@60Hzno data

Graphics API support

APIs supported by Celeron G1840 and Core i7-1255U integrated GPUs, sometimes API versions are included.

DirectX11.1/1212.1
OpenGL4.34.6

Peripherals

Specifications and connection of peripherals supported by Celeron G1840 and Core i7-1255U.

PCIe versionUp to 3.04.0
PCI Express lanes1620

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 G1840 1.12
i7-1255U 8.54
+663%

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 G1840 1777
i7-1255U 13562
+663%

Gaming performance

Pros & cons summary


Performance score 1.12 8.54
Recency 1 May 2014 23 February 2022
Physical cores 2 10
Threads 2 12
Power consumption (TDP) 53 Watt 15 Watt

i7-1255U has a 662.5% higher aggregate performance score, an age advantage of 7 years, 400% more physical cores and 500% more threads, and 253.3% lower power consumption.

The Core i7-1255U is our recommended choice as it beats the Celeron G1840 in performance tests.

Note that Celeron G1840 is a desktop processor while Core i7-1255U is a notebook one.


Should you still have questions on choice between Celeron G1840 and Core i7-1255U, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Celeron G1840
Celeron G1840
Intel Core i7-1255U
Core i7-1255U

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


3.5 239 votes

Rate Celeron G1840 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.7 801 vote

Rate Core i7-1255U on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Celeron G1840 or Core i7-1255U, agree or disagree with our judgements, or report an error or mismatch.