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Intel Core i7 3840QM

Front view of Intel Core i7 3840QM
Front view of Intel Core i5 3439Y

Intel Core i5 3439Y

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Differences What are the advantages of each

Front view of Intel Core i7 3840QM

Reasons to consider the
Intel Core i7 3840QM

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CPUBoss is not aware of any important advantages of the Core i7 3840QM vs the Core i5 3439Y.
Front view of Intel Core i5 3439Y

Reasons to consider the
Intel Core i5 3439Y

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CPUBoss is not aware of any important advantages of the Core i5 3439Y vs the Core i7 3840QM.

Benchmarks Real world tests of Core i7 3840QM vs i5 3439Y

PassMark Data courtesy Passmark

Core i7 3840QM
9,022
Core i5 3439Y
2,957

PassMark (Single Core)

Core i7 3840QM
1,944
Core i5 3439Y
1,199

Specifications Full list of technical specs

summary

 Core i7 3840QM  vs
i5 3439Y 
Clock speed 2.8 GHz 1.5 GHz
Turbo clock speed 3.8 GHz 2.3 GHz
Cores Quad core Dual core
Socket type
rPGA 988B
BGA 1224
BGA 1023
Is unlocked No No

features
Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 45W 13W
Annual home energy cost 10.84 $/year 3.13 $/year
Performance per watt 17.05 pt/W 9.82 pt/W
Typical power consumption 36.56W 10.56W

bus
Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

 Core i7 3840QM  vs
i5 3439Y 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 3 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1
Clock multiplier 28 15
Operating temperature Unknown - 105°C Unknown - 105°C

overclocking
Overclocked clock speed 3.88 GHz 2.3 GHz
Overclocked clock speed (Water) 2.8 GHz 1.5 GHz
Overclocked clock speed (Air) 3.88 GHz 2.3 GHz

integrated graphics
GPU GPU GPU
Label Intel® HD Graphics 4000 Intel® HD Graphics 4000
Number of displays supported 3 3
GPU clock speed 650 MHz 350 MHz
Turbo clock speed 1,300 MHz 850 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 32,768 MB 32,768 MB
Intel Core i7 3840QM
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Intel Core i5 3439Y
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