Notebookcheck Logo

Intel Core i7-3940XM

Intel 3940XM

The Intel Core i7-3940XM is the fastest quad-core processor for laptops (at the time of introduction in September 2012) an successor of the i7-3920XM. Due to Hyperthreading, the four cores can handle up to eight threads in parallel leading to better utilization of the CPU. Each core offers a base speed of 3.0 GHz but can dynamically increase clock rates with Turbo Boost up to 3.7 GHz (for 4 active cores), 3.8 GHz (for 2 active cores) and 3.9 GHz (for 1 active core). Furthermore, the Extreme CPUs offer an unlocked multiplicator for easy overclocking.

Ivy Bridge is an enhanced die shrink of the Sandy Bridge architecture with improvements on both GPU and CPU performance. The CPUs are produced in 22nm (versus 32nm Sandy Bridge CPUs) and are the first to introduce 3D transistors for increased energy efficiency when compared to similarly clocked Sandy Bridge processors. Other new features are integrated PCI Express 3.0 and  DDR3(L)-1600 support.

The performance of the Core i7-3940XM should be slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. Because of the higher clock speed, the former champion Core i7-3920XM should be outperformed by about 3%.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1350 MHz with Turbo Boost, making it the fastest variant.

The XM CPUs are rated at a TDP of 55 Watts including graphics card and memory controller and therefore 10 Watt higher than the other quad-core models.  Therefore, the CPU is well-suited for laptops 17-inches or greater.

SeriesIntel Core i7
CodenameIvy Bridge

Series: Core i7 Ivy Bridge

Intel Core i7-3940XM « 3 - 3.9 GHz4 / 8 cores8 MB L3
Intel Core i7-3920XM compare2.9 - 3.8 GHz4 / 8 cores8 MB L3
Intel Core i7-3840QM compare2.8 - 3.8 GHz4 / 8 cores8 MB L3
Intel Core i7-3820QM compare2.7 - 3.7 GHz4 / 8 cores8 MB L3
Intel Core i7-3740QM compare2.7 - 3.7 GHz4 / 8 cores6 MB L3
Intel Core i7-3720QM compare2.6 - 3.6 GHz4 / 8 cores6 MB L3
Intel Core i7-3635QM compare2.4 - 3.4 GHz4 / 8 cores6 MB L3
Intel Core i7-3630QM compare2.4 - 3.4 GHz4 / 8 cores6 MB L3
Intel Core i7-3615QM compare2.3 - 3.3 GHz4 / 8 cores6 MB L3
Intel Core i7-3610QM compare2.3 - 3.3 GHz4 / 8 cores6 MB L3
Intel Core i7-3632QM compare2.2 - 3.2 GHz4 / 8 cores6 MB L3
Intel Core i7-3612QM compare2.1 - 3.1 GHz4 / 8 cores6 MB L3
Intel Core i7-3540M compare3 - 3.7 GHz2 / 4 cores4 MB L3
Intel Core i7-3520M compare2.9 - 3.6 GHz2 / 4 cores4 MB L3
Intel Core i7-3687U compare2.1 - 3.3 GHz2 / 4 cores4 MB L3
Intel Core i7-3667U compare2 - 3.2 GHz2 / 4 cores4 MB L3
Intel Core i7-3537U compare2 - 3.1 GHz2 / 4 cores4 MB L3
Intel Core i7-3517U compare1.9 - 3 GHz2 / 4 cores4 MB L3
Intel Core i7-3689Y compare1.5 - 2.6 GHz2 / 4 cores4 MB L3
Clock Rate3000 - 3900 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache8 MB
Number of Cores / Threads4 / 8
Power Consumption (TDP = Thermal Design Power)55 Watt
Transistor Count1400 Million
Manufacturing Technology22 nm
Die Size160 mm2
Max. Temperature105 °C
SocketFCPGA988
FeaturesHD Graphics 4000, DDR3(L)-1600 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization
GPUIntel HD Graphics 4000 (650 - 1350 MHz)
64 Bit64 Bit support
Architecturex86
Starting Price$1096 U.S.
Announcement Date09/30/2012

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 7.45     avg: 7.5     median: 7.5 (10%)     max: 7.46 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.62     avg: 1.6     median: 1.6 (40%)     max: 1.63 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 5246     avg: 5255     median: 5252 (32%)     max: 5267 points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 20438     avg: 20582     median: 20564 (15%)     max: 20744 points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 25475     avg: 25600     median: 25624 (18%)     max: 25700 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 6506     avg: 6621     median: 6669 (8%)     max: 6687 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 208.8     avg: 219.2     median: 215.7 (3%)     max: 233 s
wPrime 2.10 - wPrime 2.0 32m *
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 s
TrueCrypt - TrueCrypt Serpent
min: 0.373     avg: 0.4     median: 0.4 (12%)     max: 0.386 GB/s
TrueCrypt - TrueCrypt Twofish
min: 0.64     avg: 0.7     median: 0.7 (11%)     max: 0.66 GB/s
TrueCrypt - TrueCrypt AES
min: 3.5     avg: 3.6     median: 3.7 (10%)     max: 3.7 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
min: 7166     avg: 7182     median: 7176 (15%)     max: 7203 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 9     avg: 9.2     median: 9 (2%)     max: 9.554 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 21     avg: 21.1     median: 21 (1%)     max: 21.26 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 518     avg: 526     median: 525.5 (2%)     max: 533 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
Windows 7 Experience Index - Win7 CPU
7.7 Points (99%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 25344     avg: 25795     median: 25885 (23%)     max: 26157 Points
3DMark 11 - 3DM11 Performance Physics
min: 7611     avg: 8737     median: 9032 (24%)     max: 9568 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

restrict list:

show all (including archived), 2024, 2023
v1.26
log 05. 10:38:19

#0 no ids found in url (should be separated by "_") +0s ... 0s

#1 not redirecting to Ajax server +0s ... 0s

#2 did not recreate cache, as it is less than 5 days old! Created at Mon, 04 Mar 2024 05:33:13 +0100 +0.001s ... 0.001s

#3 composed specs +0.018s ... 0.019s

#4 did output specs +0s ... 0.019s

#5 getting avg benchmarks for device 3345 +0.003s ... 0.022s

#6 got single benchmarks 3345 +0.016s ... 0.037s

#7 got avg benchmarks for devices +0s ... 0.037s

#8 min, max, avg, median took s +0.622s ... 0.66s

#9 return log +0.034s ... 0.694s

Please share our article, every link counts!

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Core i7

» Intel Core i7-8809G
   4x 3.1 GHz - 4.2 GHz
» Intel Core i7-8709G
   4x 3.1 GHz - 4.1 GHz
» Intel Core i7-8706G
   4x 3.1 GHz - 4.1 GHz
» Intel Core i7-8705G
   4x 3.1 GHz - 4.1 GHz
» Intel Core i7-4940MX
   4x 3.1 GHz - 4 GHz
» Intel Core i7-6920HQ
   4x 2.9 GHz - 3.8 GHz
» Intel Core i7-5950HQ
   4x 2.9 GHz - 3.8 GHz
» Intel Core i7-4930MX
   4x 3 GHz - 3.9 GHz
» Intel Core i7-6970HQ
   4x 2.8 GHz - 3.7 GHz
» Intel Core i7-6870HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-4980HQ
   4x 2.8 GHz - 4 GHz
» Intel Core i7-4910MQ
   4x 2.9 GHz - 3.9 GHz
» Intel Core i7-5850HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-3940XM
   4x 3 GHz - 3.9 GHz
» Intel Core i7-5700HQ
   4x 2.7 GHz - 3.5 GHz
» Intel Core i7-5750HQ
   4x 2.5 GHz - 3.4 GHz
» Intel Core i7-6820HK
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-6820HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-6770HQ
   4x 2.6 GHz - 3.5 GHz
» Intel Core i7-4900MQ
   4x 2.8 GHz - 3.8 GHz
» Intel Core i7-4960HQ
   4x 2.6 GHz - 3.8 GHz
» Intel Core i7-6700HQ
   4x 2.6 GHz - 3.5 GHz
» Intel Core i7-4810MQ
   4x 2.8 GHz - 3.8 GHz
» Intel Core i7-4870HQ
   4x 2.5 GHz - 3.7 GHz
» Intel Core i7-8665U
   4x 1.9 GHz - 4.8 GHz
» Intel Core i7-3920XM
   4x 2.9 GHz - 3.8 GHz
» Intel Core i7-4800MQ
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-4950HQ
   4x 2.4 GHz - 3.6 GHz
» Intel Core i7-4860HQ
   4x 2.4 GHz - 3.6 GHz
» Intel Core i7-4720HQ
   4x 2.6 GHz - 3.6 GHz
» Intel Core i7-3840QM
   4x 2.8 GHz - 3.8 GHz
» Intel Core i7-4850HQ
   4x 2.3 GHz - 3.5 GHz
» Intel Core i7-4710HQ
   4x 2.5 GHz - 3.5 GHz
» Intel Core i7-4710MQ
   4x 2.5 GHz - 3.5 GHz
» Intel Core i7-8565U
   4x 1.8 GHz - 4.6 GHz
» Intel Core i7-4770HQ
   4x 2.2 GHz - 3.4 GHz
» Intel Core i7-3820QM
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-3740QM
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-3720QM
   4x 2.6 GHz - 3.6 GHz
» Intel Core i7-4700HQ
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-4700MQ
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-4760HQ
   4x 2.1 GHz - 3.3 GHz
» Intel Core i7-4722HQ
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-2960XM
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-4712HQ
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-4712MQ
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-4750HQ
   4x 2 GHz - 3.2 GHz
» Intel Core i7-3635QM
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-3630QM
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-4702HQ
   4x 2.2 GHz - 3.2 GHz
» Intel Core i7-4702MQ
   4x 2.2 GHz - 3.2 GHz
» Intel Core i7-2860QM
   4x 2.5 GHz - 3.6 GHz
» Intel Core i7-2920XM
   4x 2.5 GHz - 3.5 GHz
» Intel Core i7-3615QM
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-3610QM
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-3632QM
   4x 2.2 GHz - 3.2 GHz
» Intel Core i7-2760QM
   4x 2.4 GHz - 3.5 GHz
» Intel Core i7-2820QM
   4x 2.3 GHz - 3.4 GHz
» Intel Core i7-3612QM
   4x 2.1 GHz - 3.1 GHz
» Intel Core i7-2720QM
   4x 2.2 GHz - 3.3 GHz
» Intel Core i7-2675QM
   4x 2.2 GHz - 3.1 GHz
» Intel Core i7-2670QM
   4x 2.2 GHz - 3.1 GHz
» Intel Core i7-6567U
   2x 3.3 GHz - 3.6 GHz
» Intel Core i7-2635QM
   4x 2 GHz - 2.9 GHz
» Intel Core i7-2630QM
   4x 2 GHz - 2.9 GHz
» Intel Core i7-5557U
   2x 3.1 GHz - 3.4 GHz
» Intel Core i7-4610M
   2x 3 GHz - 3.7 GHz
» Intel Core i7-940XM
   4x 2.13 GHz - 3.33 GHz
» Intel Core i7-4600M
   2x 2.9 GHz - 3.6 GHz
» Intel Core i7-4578U
   2x 3 GHz - 3.5 GHz
» Intel Core i7-920XM
   4x 2 GHz - 3.2 GHz
» Intel Core i7-3540M
   2x 3 GHz - 3.7 GHz
» Intel Core i7-4558U
   2x 2.8 GHz - 3.3 GHz
» Intel Core i7-6600U
   2x 2.6 GHz - 3.4 GHz
» Intel Core i7-6650U
   2x 2.2 GHz - 3.4 GHz
» Intel Core i7-6560U
   2x 2.2 GHz - 3.2 GHz
» Intel Core i7-3520M
   2x 2.9 GHz - 3.6 GHz
» Intel Core i7-6500U
   2x 2.5 GHz - 3.1 GHz
» Intel Core i7-5600U
   2x 2.6 GHz - 3.2 GHz
» Intel Core i7-5650U
   2x 2.2 GHz - 3.2 GHz
» Intel Core i7-2640M
   2x 2.8 GHz - 3.5 GHz
» Intel Core i7-5500U
   2x 2.4 GHz - 3 GHz
» Intel Core i7-5550U
   2x 2 GHz - 3 GHz
» Intel Core i7-840QM
   4x 1.86 GHz - 3.2 GHz
» Intel Core i7-2620M
   2x 2.7 GHz - 3.4 GHz
» Intel Core i7-4600U
   2x 2.1 GHz - 3.3 GHz
» Intel Core i7-4650U
   2x 1.7 GHz - 3.3 GHz
» Intel Core i7-3687U
   2x 2.1 GHz - 3.3 GHz
» Intel Core i7-4510U
   2x 2 GHz - 3.1 GHz
» Intel Core i7-640M
   2x 2.8 GHz - 3.46 GHz
» Intel Core i7-820QM
   4x 1.73 GHz - 3.06 GHz
» Intel Core i7-3667U
   2x 2 GHz - 3.2 GHz
» Intel Core i7-4500U
   2x 1.8 GHz - 3 GHz
» Intel Core i7-4550U
   2x 1.5 GHz - 3 GHz
» Intel Core i7-740QM
   4x 1.73 GHz - 2.93 GHz
» Intel Core i7-3537U
   2x 2 GHz - 3.1 GHz
» Intel Core i7-3517U
   2x 1.9 GHz - 3 GHz
» Intel Core i7-620M
   2x 2.66 GHz - 3.33 GHz
» Intel Core i7-720QM
   4x 1.6 GHz - 2.8 GHz
» Intel Core i7-2649M
   2x 2.3 GHz - 3.2 GHz
» Intel Core i7-4610Y
   2x 1.7 GHz - 2.9 GHz
» Intel Core i7-2629M
   2x 2.1 GHz - 3 GHz
» Intel Core i7-2677M
   2x 1.8 GHz - 2.9 GHz
» Intel Core i7-660LM
   2x 2.27 GHz - 3.07 GHz
» Intel Core i7-2637M
   2x 1.7 GHz - 2.8 GHz
» Intel Core i7-2657M
   2x 1.6 GHz - 2.7 GHz
» Intel Core i7-3689Y
   2x 1.5 GHz - 2.6 GHz
» Intel Core i7-2617M
   2x 1.5 GHz - 2.6 GHz
» Intel Core i7-640LM
   2x 2.13 GHz - 2.93 GHz
» Intel Core i7-620LM
   2x 2 GHz - 2.8 GHz
» Intel Core i7-680UM
   2x 1.47 GHz - 2.53 GHz
» Intel Core i7-660UM
   2x 1.33 GHz - 2.4 GHz
» Intel Core i7-640UM
   2x 1.2 GHz - 2.27 GHz
» Intel Core i7-620UM
   2x 1.06 GHz - 2.13 GHz

Surrounding CPUs

+ Intel Core i5-8269U
   4x 2.6 GHz - 4.2 GHz
+ Intel Core i5-8279U
   4x 2.4 GHz - 4.1 GHz
+ Intel Core i7-4980HQ
   4x 2.8 GHz - 4 GHz
+ Intel Core i7-4910MQ
   4x 2.9 GHz - 3.9 GHz
+ Intel Core i7-5850HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-3940XM
   4x 3 GHz - 3.9 GHz
- Intel Core i7-5700HQ
   4x 2.7 GHz - 3.5 GHz
- Intel Core i7-5750HQ
   4x 2.5 GHz - 3.4 GHz
- Intel Core i7-6820HK
   4x 2.7 GHz - 3.6 GHz
- Intel Core i7-6820HQ
   4x 2.7 GHz - 3.6 GHz
- Intel Core i7-6770HQ
   4x 2.6 GHz - 3.5 GHz
> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Notebook Processors > Intel Core i7 > Intel Core i7 3940XM Notebook Processor
Klaus Hinum, 2012-08-14 (Update: 2012-08-14)