Intel Core i7-3720QM vs Intel Core i7-3840QM

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 i7-3840QM

► remove Intel 3840QM

The Intel Core i7-3840QM is a fast quad-core processor for laptops based on the Ivy Bridge architecture and successor of the i7-3820QM. 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 2.8 GHz but can dynamically increase clock rates with Turbo Boost up to 3.6 GHz (for 4 active cores), 3.7 GHz (for 2 active cores) and 3.8 GHz (for 1 active core). Furthermore, the CPU offers 8 MB Last Level 3 Cache.

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 i7-3840QM should be slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. Overall, performance should be similar to the Core i7-3920XM.

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 i7-3840QM 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 i7-3720QMIntel Core i7-3840QM
Intel Core i7Intel Core i7
Ivy BridgeIvy Bridge
: Core i7 Ivy Bridge
Intel Core i7-3940XM (compare)3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM (compare)2900 - 3800 MHz4 / 88 MB
Intel Core i7-3840QM2800 - 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 i7-3940XM (compare)3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM (compare)2900 - 3800 MHz4 / 88 MB
» Intel Core i7-3840QM2800 - 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 MHz2800 - 3800 MHz
256 KB256 KB
1 MB1 MB
6 MB8 MB
4 / 84 / 8
45 45
1400 1400
22 22
160 mm2160 mm2
105 °C105 °C
FCBGA1224, FCPGA988
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 - 1300 MHz)
$378 U.S.$568 U.S.
Intel Core i7 3720QM

Cinebench R15 - CPU Multi 64Bit
610 Points (20%)
Cinebench R15 - CPU Single 64Bit
126 Points (59%)
Cinebench R11.5 - CPU Multi 64Bit
min: 5.96     avg: 6.6     median: 6.7 (25%)     max: 6.85 Points
min: 7     avg: 7.1     median: 7.1 (26%)     max: 7.15 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.39     avg: 1.5     median: 1.5 (60%)     max: 1.5 Points
min: 1.58     avg: 1.6     median: 1.6 (65%)     max: 1.59 Points
Cinebench R10 - Rendering Single 32Bit
min: 4749     avg: 4826.5     median: 4821 (53%)     max: 4916 Points
min: 5137     avg: 5144.5     median: 5144.5 (56%)     max: 5152 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 14659     avg: 18497.8     median: 18879 (38%)     max: 19231 Points
min: 20132     avg: 20135     median: 20135 (40%)     max: 20138 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 21405     avg: 23107.9     median: 23211 (31%)     max: 23615 Points
min: 25111     avg: 25178     median: 25178 (33%)     max: 25245 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5932     avg: 6090.8     median: 6097 (59%)     max: 6204 Points
min: 6405     avg: 6478     median: 6478 (63%)     max: 6551 Points
wPrime 2.0x - 1024m *
min: 226.9     avg: 238.9     median: 235.2 (3%)     max: 258.421 seconds
min: 245     avg: 246.2     median: 246.2 (3%)     max: 247.481 seconds
wPrime 2.0x - 32m *
min: 7.64     avg: 7.8     median: 7.9 (2%)     max: 7.941 seconds
min: 7.348     avg: 7.4     median: 7.4 (1%)     max: 7.441 seconds
WinRAR - Result
min: 3125     avg: 4248.9     median: 4365 (51%)     max: 4613 KB/s
4712 KB/s (55%)
X264 HD Benchmark 4.0 - Pass 2
min: 29.85     avg: 35.7     median: 37 (26%)     max: 37.67 fps
min: 37.11     avg: 38.2     median: 38.2 (26%)     max: 39.23 fps
X264 HD Benchmark 4.0 - Pass 1
min: 127.32     avg: 144.1     median: 146.7 (54%)     max: 150.05 fps
min: 156.2     avg: 157.8     median: 157.8 (58%)     max: 159.37 fps
TrueCrypt - Serpent Mean 100MB
min: 0.27     avg: 0.4     median: 0.4 (0%)     max: 0.513 GB/s
min: 0.375     avg: 0.4     median: 0.4 (0%)     max: 0.376 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.39     avg: 0.6     median: 0.6 (20%)     max: 0.606 GB/s
min: 0.638     avg: 0.6     median: 0.6 (22%)     max: 0.642 GB/s
TrueCrypt - AES Mean 100MB
min: 1.8     avg: 3.1     median: 3.3 (17%)     max: 3.4 GB/s
3.6 GB/s (18%)
3DMark 06 - CPU
min: 5981     avg: 6581     median: 6642 (19%)     max: 6696 Points
min: 6946     avg: 6998     median: 6998 (20%)     max: 7050 Points
Super Pi mod 1.5 XS 1M *
min: 10     avg: 10.3     median: 10.2 (2%)     max: 11 Seconds
min: 9     avg: 9.4     median: 9.4 (2%)     max: 9.703 Seconds
Super Pi mod 1.5 XS 2M *
min: 23     avg: 23.9     median: 24 (1%)     max: 24.305 Seconds
min: 21.965     avg: 22     median: 22 (1%)     max: 22 Seconds
Super Pi Mod 1.5 XS 32M *
min: 563     avg: 573.4     median: 571.7 (3%)     max: 594 Seconds
541 Seconds (2%)
SiSoft Sandra Dhrystone (MIPS)
min: 100430     avg: 124162     median: 136000 (65%)     max: 136390 MIPS
124100 MIPS (59%)
SiSoft Sandra Whetstone (MFLOPS)
min: 75250     avg: 82146     median: 82470 (63%)     max: 85440 MFLOPS
85000 MFLOPS (65%)
Windows 7 Experience Index - Processor
7.6 points (97%)
7.7 points (99%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 12064     avg: 22379.6     median: 23290 (39%)     max: 23791 Points
min: 24545     avg: 24740.5     median: 24740.5 (41%)     max: 24936 Points
3DMark 11 - Performance Physics 1280x720
min: 6455     avg: 8019.9     median: 8217 (44%)     max: 8505 points
min: 7360     avg: 7786.5     median: 7786.5 (42%)     max: 8213 points
3DMark - Ice Storm Standard Physics 1280x720
min: 35881     avg: 39127.5     median: 39127.5 (25%)     max: 42374 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 39845     avg: 40575.5     median: 40575.5 (51%)     max: 41306 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 5405     avg: 5873     median: 5921 (15%)     max: 6293 Points
3DMark - Fire Strike Physics 1920x1080
min: 7455     avg: 8123.7     median: 8113 (30%)     max: 8803 Points
Geekbench 2 - 32 Bit - Stream
8890 Points (72%)
Geekbench 2 - 32 Bit - Memory
7573 Points (69%)
Geekbench 2 - 32 Bit - Floating Point
12725 Points (36%)
Geekbench 2 - 32 Bit - Integer
11403 Points (35%)
Geekbench 2 - 32 Bit - Total Score
10848 Points (41%)
Geekbench 3 - 32 Bit Multi-Core Score
14452 Points (46%)
Geekbench 3 - 32 Bit Single-Core Score
3898 Points (83%)
Geekbench 3 - 64 Bit Multi-Core Score
12555 Points (33%)
Geekbench 3 - 64 Bit Single-Core Score
3289 Points (67%)
Geekbench 4.1/4.2 - 64 Bit Single-Core Score
3739 Points (59%)
Geekbench 4.1/4.2 - 64 Bit Multi-Core Score
12082 Points (33%)
Mozilla Kraken 1.1 - Total Score *
1240 ms (2%)
Sunspider - 1.0 Total Score *
93.2 ms (2%)
Octane V2 - Total Score
32210 Points (66%)
Power Consumption - Prime95 V28,10 Stress Power Consumption (external Monitor) ultra *
100%
1 3720QM +
80.8 Watt (35%)
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
100%
1 3720QM +
64.8 Watt (27%)

Average Benchmarks Intel Core i7-3720QM → 100%

Average Benchmarks Intel Core i7-3840QM → 104%

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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)