Intel Core i7-3720QM vs Intel Core i7-3940XM vs Intel Core i7-3635QM

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 i7-3635QM

► remove Intel 3635QM

The Intel Core i7-3635QM is a fast 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 2.4 GHz but can dynamically increase clock rates with Turbo Boost up to 3.2 GHz (for 4 active cores), 3.3 GHz (for 2 active cores) and 3.4 GHz (for 1 active core). In contrast to the 3630QM, the 3635QM has a different package (BGA) and a slightly higher GPU clock.

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 i7-3635QM is slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. As a result, overall performance is similar to the fastest Sandy Bridge model, the Core i7-2960XM.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1200 MHz with Turbo Boost, making it one of the faster variants.

As with most quad-core Ivy Bridge models, the Core i7-3635QM 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 i7-3940XMIntel Core i7-3635QM
Intel Core i7Intel Core i7Intel Core i7
Ivy BridgeIvy BridgeIvy Bridge
: Core i7 Ivy Bridge
Intel Core i7-3940XM3 - 3.9 GHz4 / 88 MB
Intel Core i7-3920XM2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-3840QM2.8 - 3.8 GHz4 / 88 MB
Intel Core i7-3820QM2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-3740QM2.7 - 3.7 GHz4 / 86 MB
» Intel Core i7-3720QM2.6 - 3.6 GHz4 / 86 MB
Intel Core i7-3635QM2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3630QM2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3615QM2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3610QM2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3632QM2.2 - 3.2 GHz4 / 86 MB
Intel Core i7-3612QM2.1 - 3.1 GHz4 / 86 MB
Intel Core i7-3540M3 - 3.7 GHz2 / 44 MB
Intel Core i7-3520M2.9 - 3.6 GHz2 / 44 MB
Intel Core i7-3687U2.1 - 3.3 GHz2 / 44 MB
Intel Core i7-3667U2 - 3.2 GHz2 / 44 MB
Intel Core i7-3537U2 - 3.1 GHz2 / 44 MB
Intel Core i7-3517U1.9 - 3 GHz2 / 44 MB
Intel Core i7-3689Y1.5 - 2.6 GHz2 / 44 MB
» Intel Core i7-3940XM3 - 3.9 GHz4 / 88 MB
Intel Core i7-3920XM2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-3840QM2.8 - 3.8 GHz4 / 88 MB
Intel Core i7-3820QM2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-3740QM2.7 - 3.7 GHz4 / 86 MB
Intel Core i7-3720QM2.6 - 3.6 GHz4 / 86 MB
Intel Core i7-3635QM2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3630QM2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3615QM2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3610QM2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3632QM2.2 - 3.2 GHz4 / 86 MB
Intel Core i7-3612QM2.1 - 3.1 GHz4 / 86 MB
Intel Core i7-3540M3 - 3.7 GHz2 / 44 MB
Intel Core i7-3520M2.9 - 3.6 GHz2 / 44 MB
Intel Core i7-3687U2.1 - 3.3 GHz2 / 44 MB
Intel Core i7-3667U2 - 3.2 GHz2 / 44 MB
Intel Core i7-3537U2 - 3.1 GHz2 / 44 MB
Intel Core i7-3517U1.9 - 3 GHz2 / 44 MB
Intel Core i7-3689Y1.5 - 2.6 GHz2 / 44 MB
Intel Core i7-3940XM3 - 3.9 GHz4 / 88 MB
Intel Core i7-3920XM2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-3840QM2.8 - 3.8 GHz4 / 88 MB
Intel Core i7-3820QM2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-3740QM2.7 - 3.7 GHz4 / 86 MB
Intel Core i7-3720QM2.6 - 3.6 GHz4 / 86 MB
» Intel Core i7-3635QM2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3630QM2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3615QM2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3610QM2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3632QM2.2 - 3.2 GHz4 / 86 MB
Intel Core i7-3612QM2.1 - 3.1 GHz4 / 86 MB
Intel Core i7-3540M3 - 3.7 GHz2 / 44 MB
Intel Core i7-3520M2.9 - 3.6 GHz2 / 44 MB
Intel Core i7-3687U2.1 - 3.3 GHz2 / 44 MB
Intel Core i7-3667U2 - 3.2 GHz2 / 44 MB
Intel Core i7-3537U2 - 3.1 GHz2 / 44 MB
Intel Core i7-3517U1.9 - 3 GHz2 / 44 MB
Intel Core i7-3689Y1.5 - 2.6 GHz2 / 44 MB
2600 - 3600 MHz3000 - 3900 MHz2400 - 3400 MHz
256 KB256 KB256 KB
1 MB1 MB1 MB
6 MB8 MB6 MB
4 / 84 / 84 / 8
45 55 45
1400 1400 1400
22 22 22
160 mm2160 mm2160 mm2
105 °C105 °C105 °C
FCBGA1224, FCPGA988FCPGA988BGA
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, 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)Intel HD Graphics 4000 (650 - 1200 MHz)
Architecturex86x86x86
$378 U.S.$1096 U.S.
Intel Core i7 3720QMIntel Core i7 3635QM

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
100%
1 3720QM +
610 Points (14%)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
100%
1 3720QM +
126 Points (46%)
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 5.96     avg: 6.6     median: 6.7 (14%)     max: 6.85 Points
min: 7.45     avg: 7.5     median: 7.5 (15%)     max: 7.46 Points
min: 6.38     avg: 6.4     median: 6.4 (13%)     max: 6.47 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.39     avg: 1.5     median: 1.5 (47%)     max: 1.5 Points
min: 1.62     avg: 1.6     median: 1.6 (52%)     max: 1.63 Points
min: 1.37     avg: 1.4     median: 1.4 (44%)     max: 1.39 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 4749     avg: 4827     median: 4821 (43%)     max: 4916
min: 5246     avg: 5255     median: 5252 (47%)     max: 5267
min: 4600     avg: 4648     median: 4660 (42%)     max: 4685
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 14659     avg: 18498     median: 18879 (32%)     max: 19231
min: 20438     avg: 20582     median: 20564 (35%)     max: 20744
min: 17688     avg: 17855     median: 17865 (30%)     max: 18011
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 21405     avg: 23108     median: 23211 (22%)     max: 23615 Points
min: 25475     avg: 25600     median: 25624 (24%)     max: 25700 Points
min: 21471     avg: 21961     median: 22047.5 (21%)     max: 22277 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 5932     avg: 6091     median: 6097 (46%)     max: 6204 Points
min: 6506     avg: 6621     median: 6669 (50%)     max: 6687 Points
min: 5819     avg: 5885     median: 5891 (44%)     max: 5937 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 226.9     avg: 239     median: 235.2 (3%)     max: 258.421 s
min: 208.8     avg: 219     median: 215.7 (3%)     max: 233 s
min: 267.2     avg: 301     median: 276.5 (3%)     max: 359.933 s
wPrime 2.10 - wPrime 2.0 32m *
min: 7.64     avg: 7.8     median: 7.9 (2%)     max: 7.941 s
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 s
min: 8.4     avg: 9.6     median: 8.9 (2%)     max: 11.424 s
WinRAR - WinRAR 4.0
min: 3125     avg: 4249     median: 4365 (28%)     max: 4613
min: 3467     avg: 4124     median: 4123.5 (26%)     max: 4780
min: 3855     avg: 4200     median: 4199.5 (27%)     max: 4544
X264 HD Benchmark 4.0 - x264 Pass 2
min: 29.85     avg: 35.7     median: 37 (17%)     max: 37.67 fps
40.6 fps (18%)
min: 35.28     avg: 35.4     median: 35.4 (16%)     max: 35.6 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 127.32     avg: 144     median: 146.7 (43%)     max: 150.05 fps
161 fps (47%)
min: 134.48     avg: 138     median: 138 (41%)     max: 141.6 fps
TrueCrypt - TrueCrypt Serpent
min: 0.27     avg: 0.4     median: 0.4 (0%)     max: 0.513 GB/s
min: 0.373     avg: 0.4     median: 0.4 (0%)     max: 0.386 GB/s
min: 0.14     avg: 0.2     median: 0.2 (0%)     max: 0.327 GB/s
TrueCrypt - TrueCrypt Twofish
min: 0.39     avg: 0.6     median: 0.6 (0%)     max: 0.606 GB/s
min: 0.64     avg: 0.7     median: 0.7 (1%)     max: 0.66 GB/s
min: 0.454     avg: 0.5     median: 0.5 (0%)     max: 0.549 GB/s
TrueCrypt - TrueCrypt AES
min: 1.8     avg: 3.1     median: 3.3 (0%)     max: 3.4 GB/s
min: 3.5     avg: 3.6     median: 3.7 (0%)     max: 3.7 GB/s
min: 3     avg: 3.1     median: 3.1 (0%)     max: 3.1 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
min: 5981     avg: 6581     median: 6642 (37%)     max: 6696 Points
min: 7166     avg: 7182     median: 7176 (40%)     max: 7203 Points
min: 6432     avg: 6483     median: 6492 (36%)     max: 6517 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 10     avg: 10.3     median: 10.2 (2%)     max: 11 s
min: 9     avg: 9.2     median: 9 (2%)     max: 9.554 s
min: 11.16     avg: 11.3     median: 11.2 (2%)     max: 11.7 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 23     avg: 23.9     median: 24 (1%)     max: 24.305 s
min: 21     avg: 21.1     median: 21 (1%)     max: 21.256 s
min: 25.829     avg: 26.1     median: 25.8 (1%)     max: 26.5 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 563     avg: 573     median: 571.7 (3%)     max: 594 s
min: 518     avg: 526     median: 525.5 (2%)     max: 533 s
min: 624     avg: 626     median: 625.3 (3%)     max: 629.05 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 100430     avg: 124162     median: 136000 (65%)     max: 136390 MIPS
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
min: 110140     avg: 118820     median: 118820 (56%)     max: 127500 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 75250     avg: 82146     median: 82470 (63%)     max: 85440 MFLOPS
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
min: 80710     avg: 80855     median: 80855 (62%)     max: 81000 MFLOPS
Windows 7 Experience Index - Win7 CPU
100%
1 3720QM +
7.6 Points (97%)
101%
1 3940XM +
7.7 Points (99%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 12064     avg: 22380     median: 23290 (27%)     max: 23791 Points
min: 25344     avg: 25795     median: 25885 (30%)     max: 26157 Points
min: 20530     avg: 21871     median: 22225.5 (26%)     max: 22501 Points
3DMark 11 - 3DM11 Performance Physics
min: 6455     avg: 8020     median: 8217 (35%)     max: 8505 Points
min: 7611     avg: 8737     median: 9032 (39%)     max: 9568 Points
min: 6023     avg: 6732     median: 7054 (30%)     max: 7235 Points
3DMark - 3DMark Ice Storm Physics
min: 35881     avg: 39128     median: 39127.5 (25%)     max: 42374 Points
48410 Points (31%)
min: 31200     avg: 33452     median: 34461 (22%)     max: 34696 Points
3DMark - 3DMark Ice Storm Unlimited Physics
100%
1 3720QM +
min: 39845     avg: 40576     median: 40575.5 (42%)     max: 41306 Points
3DMark - 3DMark Cloud Gate Physics
min: 5405     avg: 5873     median: 5921 (15%)     max: 6293 Points
7208 Points (18%)
min: 5633     avg: 5722     median: 5740 (15%)     max: 5792 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 7455     avg: 8124     median: 8113 (20%)     max: 8803 Points
9863 Points (25%)
min: 7937     avg: 8037     median: 7965 (20%)     max: 8210 Points
Geekbench 2 - 32 Bit - Geekbench Stream
100%
1 3720QM +
8890 Points (72%)
95%
1 3635QM +
8423 Points (68%)
Geekbench 2 - 32 Bit - Geekbench Memory
100%
1 3720QM +
7573 Points (69%)
98%
1 3635QM +
7446 Points (68%)
Geekbench 2 - 32 Bit - Geekbench Floating Point
100%
1 3720QM +
12725 Points (25%)
93%
1 3635QM +
11831 Points (23%)
Geekbench 2 - 32 Bit - Geekbench Integer
100%
1 3720QM +
11403 Points (23%)
95%
1 3635QM +
10805 Points (22%)
Geekbench 2 - 32 Bit - Geekbench Total Score
100%
1 3720QM +
10848 Points (28%)
95%
1 3635QM +
10254 Points (27%)
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
100%
1 3720QM +
14452 (26%)
Geekbench 3 - Geekbench 3 32 Bit Single-Core
100%
1 3720QM +
3898 (80%)
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
100%
1 3720QM +
12555 (20%)
Geekbench 3 - Geekbench 3 64 Bit Single-Core
100%
1 3720QM +
3289 (67%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
100%
1 3720QM +
3739 (51%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
100%
1 3720QM +
12082 (19%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
100%
1 3720QM +
1240 ms (2%)
Sunspider - Sunspider 1.0 Total Score *
100%
1 3720QM +
93.2 ms (1%)
Octane V2 - Octane V2 Total Score
100%
1 3720QM +
32210 Points (52%)
Power Consumption - Prime95 Power Consumption - external Monitor *
100%
1 3720QM +
80.8 Watt (22%)
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
100%
1 3720QM +
64.8 Watt (17%)

Average Benchmarks Intel Core i7-3720QM → 100% n=25

Average Benchmarks Intel Core i7-3940XM → 109% n=25

Average Benchmarks Intel Core i7-3635QM → 94% n=25

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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)