Intel Celeron B840 vs N2940

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Combined performance score

Celeron N2940
0.68
+3%

N2940 outperforms B840 by 3% in our combined benchmark results.

General info

Comparing Celeron N2940 and Celeron B840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking25802594
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel CeleronIntel Celeron
Architecture codenameBay Trail-M (2013−2014)Sandy Bridge (2011−2013)
Release date22 May 2014 (9 years old)1 July 2011 (12 years old)
Launch price (MSRP)no data$86
Current price$377 $133 (1.5x MSRP)

Technical specs

Celeron N2940 and Celeron B840 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 cores4 (Quad-Core)2 (Dual-core)
Threads42
Base clock speed1.83 GHz1.9 GHz
Boost clock speed2.25 GHz1.9 GHz
L1 cache56K (per core)64K (per core)
L2 cache512K (per core)256K (per core)
L3 cache0 KB2 MB (shared)
Chip lithography22 nm32 nm
Die sizeno data131 mm2
Maximum core temperature100 °C100 °C
Number of transistorsno data504 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo

Compatibility

Information on Celeron N2940 and Celeron B840 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
SocketFCBGA1170FCPGA988,PGA988
Power consumption (TDP)7.5 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron N2940 and Celeron B840. You'll probably need this information if you require some particular technology.

AES-NI--
FMAno data+
Enhanced SpeedStep (EIST)++
My WiFino data+
Turbo Boost Technology--
Hyper-Threading Technology--
Idle States++
Thermal Monitoringno data+
Flex Memory Accessno data+
Demand Based Switchingno data-
Smart Connect+no data
FDIno data+
Fast Memory Accessno data+
StatusDiscontinuedDiscontinued

Security technologies

Celeron N2940 and Celeron B840 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDB++
Secure Key+no data
Anti-Theft--

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron N2940 and Celeron B840 are enumerated here.

VT-d--
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron N2940 and Celeron B840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory size8 GB16 GB
Max memory channels22
Maximum memory bandwidth21.32 GB/s21.3 GB/s
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel® HD Graphics for Intel Atom® Processor Z3700 SeriesIntel® HD Graphics for 2nd Generation Intel® Processors
Quick Sync Video+-
Clear Video HD--
Graphics max frequency854 MHz1 GHz
InTru 3D--

Graphics interfaces

Available interfaces and connections of Celeron N2940 and Celeron B840 integrated GPUs.

Number of displays supported22
eDPno data+
DisplayPortno data+
HDMIno data+
SDVOno data+
CRTno data+

Peripherals

Specifications and connection of peripherals supported by Celeron N2940 and Celeron B840.

PCIe version2.02.0
PCI Express lanes416
USB revision3.0 and 2.0no data
Total number of SATA ports2no data
Number of USB ports5no 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 N2940 0.68
+3%
Celeron B840 0.66

N2940 outperforms B840 by 3% in our combined benchmark results.


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.

Benchmark coverage: 68%

Celeron N2940 1041
+2.6%
Celeron B840 1015

N2940 outperforms B840 by 3% in Passmark.

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 42%

Celeron N2940 165
Celeron B840 328
+98.8%

B840 outperforms N2940 by 99% in GeekBench 5 Single-Core.

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 42%

Celeron N2940 491
Celeron B840 597
+21.6%

B840 outperforms N2940 by 22% in GeekBench 5 Multi-Core.

Gaming performance

Advantages and disadvantages


Performance score 0.68 0.66
Recency 22 May 2014 1 July 2011
Physical cores 4 2
Threads 4 2
Chip lithography 22 nm 32 nm
Power consumption (TDP) 7 Watt 35 Watt

We couldn't decide between Celeron N2940 and Celeron B840. The differences in performance seem too small.


Should you still have questions on choice between Celeron N2940 and Celeron B840, ask them in Comments section, and we shall answer.

User ratings

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Intel Celeron N2940
Celeron N2940
Intel Celeron B840
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Questions and comments

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