Intel Core i7 3940XM 

Released September, 2012
  • 3 GHz
  • Quad core
  • Unlocked
7.9 Out of 10

CPUBoss Review Our evaluation of the Intel Core i7 3940XM among laptop CPUs (over 15W)

Performance

Benchmark performance using all cores

Core i7 3940XM
9.8
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core i7 3940XM
8.9
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core i7 3940XM
6.7
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core i7 3940XM
n.d.
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core i7 3940XM
5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Core i7 3940XM
n.d.
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

7.9

CPUBoss Score

Combination of all six facets

Core i7 3940XM
7.9

Benchmarks Real world tests of the Intel Core i7 3940XM

Sky Diver Data courtesy FutureMark

Core i7 3940XM
2,134

Cloud Gate Data courtesy FutureMark

Core i7 3940XM
6,042

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 3940XM
13,202

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i7 3940XM
3,370

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 3940XM
2,680,000 MB/s
Core i7 3840QM
2,550,000 MB/s
Core i7 3920XM
2,620,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 3940XM
12,746

PassMark Data courtesy Passmark

Core i7 3940XM
9,820

PassMark (Single Core)

Core i7 3940XM
2,054

Specifications Full list of technical specs

summary

Clock speed 3 GHz
Turbo clock speed 3.9 GHz
Cores Quad core
Socket type rPGA 988B
Is unlocked Yes

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 55W
Annual home energy cost 13.25 $/year
Performance per watt 15.15 pt/W
Typical power consumption 44.69W

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 30
Operating temperature Unknown - 105°C

overclocking

Overclock popularity 0
Overclocked clock speed 4.47 GHz
Overclocked clock speed (Water) 3 GHz
PassMark (Overclocked) 6,125.4
Overclocked clock speed (Air) 4.47 GHz

integrated graphics

GPU GPU
Label Intel® HD Graphics 4000
Number of displays supported 3
GPU clock speed 650 MHz
Turbo clock speed 1,350 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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