Intel Core i7-3720QM vs Intel Core i7-3940XM

Intel Core i7-3720QM

► remove Intel 3720QM

The Intel Core i7-3720QM is a fast high-end quad-core processor for laptops based on the Ivy Bridge architecture. 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 2.6 GHz but can dynamically increase clock rates with Turbo Boost up to 3.4 GHz (for 4 active cores), 3.5 GHz (for 2 active cores) and 3.6 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 i7-3720QM is slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. As a result, overall performance is higher than the former fastest model, the Core i7-2920XM.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1250 MHz with Turbo Boost, making it one of the faster variants.

As with most quad-core Ivy Bridge models, the Core i7-3720QM 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 i7-3940XM

► 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 i7-3720QMIntel Core i7-3940XM
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 i7-3740QM (compare)2700 - 3700 MHz4 / 86 MB
» Intel Core i7-3720QM2600 - 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 i7-3740QM (compare)2700 - 3700 MHz4 / 86 MB
Intel Core i7-3720QM2600 - 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
2600 - 3600 MHz3000 - 3900 MHz
256 KB256 KB
1 MB1 MB
6 MB8 MB
4 / 84 / 8
45 55
1400 1400
22 22
160 mm2160 mm2
105 °C105 °C
FCBGA1224, FCPGA988FCPGA988
HD Graphics 4000 (650-1250MHz), 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 - 1250 MHz)Intel HD Graphics 4000 (650 - 1350 MHz)
$378 U.S.$1096 U.S.
Intel Core i7 3720QM

Cinebench R15 - CPU Multi 64Bit
610 Points (14%)
Cinebench R15 - CPU Single 64Bit
126 Points (58%)
Cinebench R11.5 - CPU Multi 64Bit
min: 5.96     avg: 6.6     median: 6.7 (17%)     max: 6.85 Points
min: 7.45     avg: 7.5     median: 7.5 (19%)     max: 7.46 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.39     avg: 1.5     median: 1.5 (60%)     max: 1.5 Points
min: 1.62     avg: 1.6     median: 1.6 (66%)     max: 1.63 Points
Cinebench R10 - Rendering Single 32Bit
min: 4749     avg: 4827     median: 4821 (50%)     max: 4916 Points
min: 5246     avg: 5255     median: 5252 (54%)     max: 5267 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 14659     avg: 18498     median: 18879 (32%)     max: 19231 Points
min: 20438     avg: 20582     median: 20564 (35%)     max: 20744 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 21405     avg: 23108     median: 23211 (31%)     max: 23615 Points
min: 25475     avg: 25600     median: 25624 (34%)     max: 25700 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5932     avg: 6091     median: 6097 (57%)     max: 6204 Points
min: 6506     avg: 6621     median: 6669 (62%)     max: 6687 Points
wPrime 2.0x - 1024m *
min: 226.9     avg: 239     median: 235.2 (3%)     max: 258.421 seconds
min: 208.8     avg: 219     median: 215.7 (3%)     max: 233 seconds
wPrime 2.0x - 32m *
min: 7.64     avg: 7.8     median: 7.9 (2%)     max: 7.941 seconds
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 seconds
WinRAR - Result
min: 3125     avg: 4249     median: 4365 (51%)     max: 4613 KB/s
min: 3467     avg: 4124     median: 4123.5 (48%)     max: 4780 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 29.85     avg: 35.7     median: 37 (23%)     max: 37.67 fps
40.6 fps (26%)
X264 HD Benchmark 4.0 - Pass 1
min: 127.32     avg: 144     median: 146.7 (52%)     max: 150.05 fps
161 fps (57%)
TrueCrypt - Serpent Mean 100MB
min: 0.27     avg: 0.4     median: 0.4 (19%)     max: 0.513 GB/s
min: 0.373     avg: 0.4     median: 0.4 (20%)     max: 0.386 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.39     avg: 0.6     median: 0.6 (0%)     max: 0.606 GB/s
min: 0.64     avg: 0.7     median: 0.7 (0%)     max: 0.66 GB/s
TrueCrypt - AES Mean 100MB
min: 1.8     avg: 3.1     median: 3.3 (17%)     max: 3.4 GB/s
min: 3.5     avg: 3.6     median: 3.7 (19%)     max: 3.7 GB/s
3DMark 06 - CPU
min: 5981     avg: 6581     median: 6642 (44%)     max: 6696 Points
min: 7166     avg: 7182     median: 7176 (48%)     max: 7203 Points
Super Pi mod 1.5 XS 1M *
min: 10     avg: 10.3     median: 10.2 (2%)     max: 11 Seconds
min: 9     avg: 9.2     median: 9 (2%)     max: 9.554 Seconds
Super Pi mod 1.5 XS 2M *
min: 23     avg: 23.9     median: 24 (1%)     max: 24.305 Seconds
min: 21     avg: 21.1     median: 21 (1%)     max: 21.256 Seconds
Super Pi Mod 1.5 XS 32M *
min: 563     avg: 573     median: 571.7 (3%)     max: 594 Seconds
min: 518     avg: 526     median: 525.5 (2%)     max: 533 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 100430     avg: 124162     median: 136000 (65%)     max: 136390 MIPS
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 75250     avg: 82146     median: 82470 (63%)     max: 85440 MFLOPS
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
Windows 7 Experience Index - Processor
7.6 points (97%)
7.7 points (99%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 12064     avg: 22380     median: 23290 (33%)     max: 23791 Points
min: 25344     avg: 25795     median: 25885 (36%)     max: 26157 Points
3DMark 11 - Performance Physics 1280x720
min: 6455     avg: 8020     median: 8217 (40%)     max: 8505 points
min: 7611     avg: 8737     median: 9032 (44%)     max: 9568 points
3DMark - Ice Storm Standard Physics 1280x720
min: 35881     avg: 39128     median: 39127.5 (25%)     max: 42374 Points
48410 Points (31%)
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 39845     avg: 40576     median: 40575.5 (47%)     max: 41306 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 5405     avg: 5873     median: 5921 (15%)     max: 6293 Points
7208 Points (18%)
3DMark - Fire Strike Physics 1920x1080
min: 7455     avg: 8124     median: 8113 (28%)     max: 8803 Points
9863 Points (34%)
Geekbench 2 - 32 Bit - Stream
8890 Points (72%)
Geekbench 2 - 32 Bit - Memory
7573 Points (69%)
Geekbench 2 - 32 Bit - Floating Point
12725 Points (25%)
Geekbench 2 - 32 Bit - Integer
11403 Points (23%)
Geekbench 2 - 32 Bit - Total Score
10848 Points (28%)
Geekbench 3 - 32 Bit Multi-Core Score
14452 Points (26%)
Geekbench 3 - 32 Bit Single-Core Score
3898 Points (81%)
Geekbench 3 - 64 Bit Multi-Core Score
12555 Points (20%)
Geekbench 3 - 64 Bit Single-Core Score
3289 Points (67%)
Geekbench 4.4 - 64 Bit Single-Core Score
3739 Points (59%)
Geekbench 4.4 - 64 Bit Multi-Core Score
12082 Points (21%)
Mozilla Kraken 1.1 - Total Score *
1240 ms (2%)
Sunspider - 1.0 Total Score *
93.2 ms (1%)
Octane V2 - Total Score
32210 Points (61%)
Power Consumption - Prime95 V28,10 Stress Power Consumption (external Monitor) ultra *
100%
1 3720QM +
80.8 Watt (22%)
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
100%
1 3720QM +
64.8 Watt (17%)

Average Benchmarks Intel Core i7-3720QM → 100%

Average Benchmarks Intel Core i7-3940XM → 108%

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

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Redaktion, 2017-09- 8 (Update: 2017-09-11)