Intel Core i7-3940XM vs Intel Core i7-3740QM

Intel Core i7-3940XM

► remove 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.

Intel Core i7-3740QM

► remove Intel 3740QM

The Intel Core i7-3740QM is a fast quad-core processor for laptops based on the Ivy Bridge architecture and successor of the i7-3720QM. 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 2.7 GHz but can dynamically increase clock rates with Turbo Boost up to 3.5 GHz (for 4 active cores), 3.6 GHz (for 2 active cores) and 3.7 GHz (for 1 active core).

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 i7-3740QM should be slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. As a result, overall performance should be above the Core i7-2960XM.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1300 MHz with Turbo Boost, making it one of the faster variants.

As with most quad-core Ivy Bridge models, the Core i7-3740QM is specified at a TDP of 45 Watts including graphics card and memory controller. Therefore, the CPU is well-suited for laptops 15-inches or greater.

Intel Core i7-3940XMIntel Core i7-3740QM
Intel Core i7Intel Core i7
Ivy BridgeIvy Bridge
: Core i7 Ivy Bridge
» Intel Core i7-3940XM3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM (compare)2900 - 3800 MHz4 / 88 MB
Intel Core i7-3840QM (compare)2800 - 3800 MHz4 / 88 MB
Intel Core i7-3820QM (compare)2700 - 3700 MHz4 / 88 MB
Intel Core i7-3740QM2700 - 3700 MHz4 / 86 MB
Intel Core i7-3720QM (compare)2600 - 3600 MHz4 / 86 MB
Intel Core i7-3635QM (compare)2400 - 3400 MHz4 / 86 MB
Intel Core i7-3630QM (compare)2400 - 3400 MHz4 / 86 MB
Intel Core i7-3615QM (compare)2300 - 3300 MHz4 / 86 MB
Intel Core i7-3610QM (compare)2300 - 3300 MHz4 / 86 MB
Intel Core i7-3632QM (compare)2200 - 3200 MHz4 / 86 MB
Intel Core i7-3612QM (compare)2100 - 3100 MHz4 / 86 MB
Intel Core i7-3540M (compare)3000 - 3700 MHz2 / 44 MB
Intel Core i7-3520M (compare)2900 - 3600 MHz2 / 44 MB
Intel Core i7-3687U (compare)2100 - 3300 MHz2 / 44 MB
Intel Core i7-3667U (compare)2000 - 3200 MHz2 / 44 MB
Intel Core i7-3537U (compare)2000 - 3100 MHz2 / 44 MB
Intel Core i7-3517U (compare)1900 - 3000 MHz2 / 44 MB
Intel Core i7-3689Y (compare)1500 - 2600 MHz2 / 44 MB
Intel Core i7-3940XM3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM (compare)2900 - 3800 MHz4 / 88 MB
Intel Core i7-3840QM (compare)2800 - 3800 MHz4 / 88 MB
Intel Core i7-3820QM (compare)2700 - 3700 MHz4 / 88 MB
» Intel Core i7-3740QM2700 - 3700 MHz4 / 86 MB
Intel Core i7-3720QM (compare)2600 - 3600 MHz4 / 86 MB
Intel Core i7-3635QM (compare)2400 - 3400 MHz4 / 86 MB
Intel Core i7-3630QM (compare)2400 - 3400 MHz4 / 86 MB
Intel Core i7-3615QM (compare)2300 - 3300 MHz4 / 86 MB
Intel Core i7-3610QM (compare)2300 - 3300 MHz4 / 86 MB
Intel Core i7-3632QM (compare)2200 - 3200 MHz4 / 86 MB
Intel Core i7-3612QM (compare)2100 - 3100 MHz4 / 86 MB
Intel Core i7-3540M (compare)3000 - 3700 MHz2 / 44 MB
Intel Core i7-3520M (compare)2900 - 3600 MHz2 / 44 MB
Intel Core i7-3687U (compare)2100 - 3300 MHz2 / 44 MB
Intel Core i7-3667U (compare)2000 - 3200 MHz2 / 44 MB
Intel Core i7-3537U (compare)2000 - 3100 MHz2 / 44 MB
Intel Core i7-3517U (compare)1900 - 3000 MHz2 / 44 MB
Intel Core i7-3689Y (compare)1500 - 2600 MHz2 / 44 MB
3000 - 3900 MHz2700 - 3700 MHz
256 KB256 KB
1 MB1 MB
8 MB6 MB
4 / 84 / 8
55 45
1400 1400
22 22
160 mm2160 mm2
105 °C105 °C
FCPGA988FCBGA1224, FCPGA988
HD Graphics 4000, DDR3(L)-1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 4000, DDR3(L)-1600 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization
iGPUIntel HD Graphics 4000 (650 - 1350 MHz)Intel HD Graphics 4000 (650 - 1300 MHz)
$1096 U.S.$378 U.S.

Cinebench R11.5 - CPU Multi 64Bit
min: 7.45     avg: 7.5     median: 7.5 (28%)     max: 7.46 Points
min: 6.93     avg: 7     median: 7 (26%)     max: 6.98 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.62     avg: 1.6     median: 1.6 (66%)     max: 1.63 Points
1.5 Points (63%)
Cinebench R10 - Rendering Single 32Bit
min: 5246     avg: 5255     median: 5252 (57%)     max: 5267 Points
4951 Points (54%)
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 20438     avg: 20582     median: 20564 (41%)     max: 20744 Points
19798 Points (40%)
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 25475     avg: 25599.7     median: 25624 (34%)     max: 25700 Points
min: 24138     avg: 24218.5     median: 24218.5 (32%)     max: 24299 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 6506     avg: 6620.7     median: 6669 (65%)     max: 6687 Points
min: 6281     avg: 6323.5     median: 6323.5 (61%)     max: 6366 Points
wPrime 2.0x - 1024m *
min: 208.8     avg: 219.2     median: 215.7 (3%)     max: 233 seconds
247 seconds (3%)
wPrime 2.0x - 32m *
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 seconds
7.6 seconds (2%)
WinRAR - Result
min: 3467     avg: 4123.5     median: 4123.5 (48%)     max: 4780 KB/s
4680 KB/s (55%)
X264 HD Benchmark 4.0 - Pass 2
40.6 fps (28%)
38.6 fps (27%)
X264 HD Benchmark 4.0 - Pass 1
161.1 fps (60%)
153.8 fps (57%)
TrueCrypt - Serpent Mean 100MB
min: 0.373     avg: 0.4     median: 0.4 (0%)     max: 0.386 GB/s
0.4 GB/s (0%)
TrueCrypt - Twofish Mean 100MB
min: 0.64     avg: 0.7     median: 0.7 (22%)     max: 0.66 GB/s
0.6 GB/s (20%)
TrueCrypt - AES Mean 100MB
min: 3.5     avg: 3.6     median: 3.7 (19%)     max: 3.7 GB/s
3.5 GB/s (18%)
3DMark 06 - CPU
min: 7166     avg: 7181.7     median: 7176 (20%)     max: 7203 Points
min: 6825     avg: 6837     median: 6837 (19%)     max: 6849 Points
Super Pi mod 1.5 XS 1M *
min: 9     avg: 9.2     median: 9 (2%)     max: 9.554 Seconds
10.2 Seconds (2%)
Super Pi mod 1.5 XS 2M *
min: 21     avg: 21.1     median: 21 (1%)     max: 21.256 Seconds
23.4 Seconds (1%)
Super Pi Mod 1.5 XS 32M *
min: 518     avg: 525.5     median: 525.5 (2%)     max: 533 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
Windows 7 Experience Index - Processor
7.7 points (99%)
7.7 points (99%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 25344     avg: 25795.3     median: 25885 (43%)     max: 26157 Points
min: 23645     avg: 23789     median: 23789 (40%)     max: 23933 Points
3DMark 11 - Performance Physics 1280x720
min: 7611     avg: 8737     median: 9032 (49%)     max: 9568 points
min: 7048     avg: 7782.5     median: 7782.5 (42%)     max: 8517 points
3DMark - Ice Storm Standard Physics 1280x720
48410 Points (31%)
3DMark - Cloud Gate Standard Physics 1280x720
7208 Points (18%)
3DMark - Fire Strike Physics 1920x1080
9863 Points (36%)

Average Benchmarks Intel Core i7-3940XM → 100%

Average Benchmarks Intel Core i7-3740QM → 96%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)