Intel Core i7 840QM 

Released June, 2010
  • 1.86 GHz
  • Quad core
1.6 Out of 10

CPUBoss Review Our evaluation of the Intel Core i7 840QM among laptop CPUs (over 15W)

Performance

Benchmark performance using all cores

Core i7 840QM
6.5
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core i7 840QM
6.3
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core i7 840QM
0.0
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core i7 840QM
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core i7 840QM
3.9
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Core i7 840QM
n.d.
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

1.6

CPUBoss Score

Combination of all six facets

Core i7 840QM
1.6

Benchmarks Real world tests of the Intel Core i7 840QM

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 840QM
5,046
Core i7 640M
4,385

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i7 840QM
1,892
Core i7 640M
2,187

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 840QM
129,300 MB/s
Core i7 640M
1,570,000 MB/s
Core i7 720QM
105,600 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 840QM
4,781
Core i7 640M
4,158

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 840QM
5,579
Core i7 640M
4,694

GeekBench

Core i7 840QM
6,561
Core i7 640M
6,359

PassMark Data courtesy Passmark

Core i7 840QM
3,416
Core i7 640M
2,871

PassMark (Single Core)

Core i7 840QM
1,002
Core i7 640M
1,298

Specifications Full list of technical specs

summary

Clock speed 1.86 GHz
Turbo clock speed 3.2 GHz
Cores Quad core
Socket type rPGA 988A
Is unlocked No

features

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

power consumption

TDP 45W
Annual home energy cost 10.84 $/year
Performance per watt 3.91 pt/W
Typical power consumption 36.56W

bus

Architecture DMI
Transfer rate 2,500 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 45 nm
Transistor count 774,000,000
Max CPUs 1
Clock multiplier 14

overclocking

Overclocked clock speed 3.12 GHz
Overclocked clock speed (Water) 1.87 GHz
Overclocked clock speed (Air) 3.12 GHz

integrated graphics

GPU None

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1333
  2. DDR3-1066
  3. DDR3
Channels Dual Channel
Supports ECC No
Maximum bandwidth 21,333.32 MB/s
Maximum memory size 8,192 MB
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