Intel Core i7 3840QM 

Released September, 2012
  • 2.8 GHz
  • Quad core
7.3 Out of 10

CPUBoss Review Our evaluation of the Intel Core i7 3840QM among laptop CPUs (over 15W)

Performance

Benchmark performance using all cores

Core i7 3840QM
9.4
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core i7 3840QM
8.6
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core i7 3840QM
n.d.
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core i7 3840QM
6.5
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core i7 3840QM
5.5
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Core i7 3840QM
5.4
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

7.3

CPUBoss Score

Combination of all six facets

Core i7 3840QM
7.3

Benchmarks Real world tests of the Intel Core i7 3840QM

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 3840QM
13.55 mHash/s
Core i7 3740QM
13.55 mHash/s

CompuBench 1.5 (Face detection)

Core i7 3840QM
3.41 mPixels/s
Core i7 3740QM
3.39 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 3840QM
-1 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 3840QM
12,083

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i7 3840QM
3,101

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 3840QM
2,550,000 MB/s
Core i7 3940XM
2,680,000 MB/s
Core i7 3740QM
2,470,000 MB/s

PassMark Data courtesy Passmark

Core i7 3840QM
9,022

PassMark (Single Core)

Core i7 3840QM
1,944

Specifications Full list of technical specs

summary

Clock speed 2.8 GHz
Turbo clock speed 3.8 GHz
Cores Quad core
Socket type
  1. rPGA 988B
  2. BGA 1224
Is unlocked No

features

Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. AES
  3. SSE
  4. SSE2
  5. SSE4.1
  6. SSE3
  7. Supplemental SSE3
  8. SSE4.2
  9. AVX
  10. SSE4
Supports dynamic frequency scaling Yes

power consumption

TDP 45W
Annual home energy cost 10.84 $/year
Performance per watt 17.65 pt/W
Typical power consumption 36.56W

bus

Architecture DMI
Transfer rate 5,000 MT/s

details

Architecture x86-64
Threads 8 threads
L2 cache 1 MB
L2 cache per core 0.25 MB/core
L3 cache 8 MB
L3 cache per core 2 MB/core
Manufacture process 22 nm
Max CPUs 1
Clock multiplier 28
Operating temperature Unknown - 105°C

overclocking

Overclock popularity 0
Overclocked clock speed 3.9 GHz
Overclocked clock speed (Water) 2.8 GHz
PassMark (Overclocked) 4,717.8
Overclocked clock speed (Air) 3.9 GHz

integrated graphics

GPU GPU
Label Intel® HD Graphics 4000
Number of displays supported 3
GPU clock speed 650 MHz
Turbo clock speed 1,300 MHz

memory controller

Memory controller Built-in
Memory type DDR3
Channels Dual Channel
Supports ECC No
Maximum bandwidth 12,800 MB/s
Maximum memory size 32,768 MB
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