CPUBoss Review Our evaluation of N2840 vs 2955U among laptop CPUs (up to 15W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.7

CPUBoss Score

Combination of all six facets

Winner
Intel Celeron 2955U 

CPUBoss recommends the Intel Celeron 2955U  based on its features.

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VS

Differences What are the advantages of each

Front view of Intel Celeron N2840

Reasons to consider the
Intel Celeron N2840

Report a correction

CPUBoss is not aware of any important advantages of the N2840 vs the 2955U.

Front view of Intel Celeron 2955U

Reasons to consider the
Intel Celeron 2955U

Report a correction

CPUBoss is not aware of any important advantages of the 2955U vs the N2840.

Benchmarks Real world tests of Celeron N2840 vs 2955U

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Celeron N2840
1.72 mHash/s
Celeron 2955U
3.64 mHash/s

CompuBench 1.5 (Face detection)

Celeron N2840
1.11 mPixels/s
Celeron 2955U
6.28 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Celeron N2840
0.13 fps
Celeron 2955U
0.57 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Celeron N2840
60,300 MB/s
Celeron 2955U
93,200 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Celeron N2840  vs
2955U 
Clock speed 2.16 GHz 1.4 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Supports dynamic frequency scaling Yes Yes

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics HD (Haswell)
Number of displays supported 2 3
GPU clock speed 311 MHz 200 MHz
Turbo clock speed 792 MHz 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 12,800 MB/s 12,800 MB/s
Maximum memory size 8,192 MB 16,384 MB

details

Celeron N2840  vs
2955U 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.58 GHz 1.41 GHz
Overclocked clock speed (Water) 2.17 GHz 1.4 GHz
Overclocked clock speed (Air) 2.58 GHz 1.41 GHz

power consumption

TDP 7.5W 15W
Annual home energy cost 1.81 $/year 3.61 $/year
Performance per watt 7.05 pt/W 6.2 pt/W
Typical power consumption 6.09W 12.19W

bus

Architecture FSB DMI 2.0
Number of links 1 1
Intel Celeron N2840
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Intel Celeron 2955U
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