Intel Core i7-3720QM vs Intel Core i7-3940XM vs Intel Core i7-3689Y

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 i7-3689Y

► remove

The Intel Core i7-3689Y is an ULV-processor for ultrabooks and tablets based on the Ivy Bridge architecture. Due to Hyperthreading, the two cores can handle up to four threads in parallel leading to better utilization of the CPU. Each core offers a base speed of 1.5 GHz but can dynamically increase clock rates with Turbo Boost up to 2.4 GHz (for 2 active cores) and 2.6 GHz (for 1 active core). As other dual core Core i7, it offers a 4 MB L3-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 i7-3689Y is limited by the very low TDP. Therefore, the maximum turbo clocks are rarely achieved. Overall, the 3689Y should be a bit slower than the Core i5-3317U.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 350 MHz up to 850 MHz with Turbo Boost, delivering a performance comparable with an AMD Radeon HD 6520G.

The 3689Y is rated at a TDP of 13 W including graphics card and memory controller. If necessary, the TDP can be set to an even lower value of 10 W (cTDP Down). Therefore, the CPU is suited for tablets and ultrabooks.

Intel Core i7-3720QMIntel Core i7-3940XMIntel Core i7-3689Y
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 MHz1500 - 2600 MHz
256 KB256 KB128 KB
1 MB1 MB512 KB
6 MB8 MB4 MB
4 / 84 / 82 / 4
45 55 13
1400 1400
22 22 22
160 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, VirtualizationTurbo Boost 2.0, Hyper-Threading, Virtualization VT-x, Virtualization for Directed I/O (VT-d), Trusted Execution, AES, Intel 64, Anti-Theft, My WiFi, Idle States, Enhanced SpeedStep, Thermal Monitorin, Execute Disable Bit
iGPUIntel HD Graphics 4000 (650 - 1250 MHz)Intel HD Graphics 4000 (650 - 1350 MHz)Intel HD Graphics 4000 (350 - 850 MHz)
Architecturex86x86x86
$378 U.S.$1096 U.S.
Intel Core i7 3720QMIntel Core i7 3689Y

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
100%
1 3720QM +
min: 5.96     avg: 6.6     median: 6.7 (14%)     max: 6.85 Points
111%
1 3940XM +
min: 7.45     avg: 7.5     median: 7.5 (15%)     max: 7.46 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
100%
1 3720QM +
min: 1.39     avg: 1.5     median: 1.5 (47%)     max: 1.5 Points
110%
1 3940XM +
min: 1.62     avg: 1.6     median: 1.6 (52%)     max: 1.63 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 3720QM +
min: 4749     avg: 4827     median: 4821 (43%)     max: 4916
109%
1 3940XM +
min: 5246     avg: 5255     median: 5252 (47%)     max: 5267
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 3720QM +
min: 14659     avg: 18498     median: 18879 (32%)     max: 19231
109%
1 3940XM +
min: 20438     avg: 20582     median: 20564 (35%)     max: 20744
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
100%
1 3720QM +
min: 21405     avg: 23108     median: 23211 (22%)     max: 23615 Points
110%
1 3940XM +
min: 25475     avg: 25600     median: 25624 (24%)     max: 25700 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
100%
1 3720QM +
min: 5932     avg: 6091     median: 6097 (46%)     max: 6204 Points
109%
1 3940XM +
min: 6506     avg: 6621     median: 6669 (50%)     max: 6687 Points
wPrime 2.10 - wPrime 2.0 1024m *
100%
1 3720QM +
min: 226.9     avg: 239     median: 235.2 (3%)     max: 258.421 s
100%
1 3940XM +
min: 208.8     avg: 219     median: 215.7 (3%)     max: 233 s
wPrime 2.10 - wPrime 2.0 32m *
100%
1 3720QM +
min: 7.64     avg: 7.8     median: 7.9 (2%)     max: 7.941 s
100%
1 3940XM +
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 s
WinRAR - WinRAR 4.0
100%
1 3720QM +
min: 3125     avg: 4249     median: 4365 (28%)     max: 4613
94%
1 3940XM +
min: 3467     avg: 4124     median: 4123.5 (26%)     max: 4780
X264 HD Benchmark 4.0 - x264 Pass 2
100%
1 3720QM +
min: 29.85     avg: 35.7     median: 37 (17%)     max: 37.67 fps
110%
1 3940XM +
40.6 fps (18%)
X264 HD Benchmark 4.0 - x264 Pass 1
100%
1 3720QM +
min: 127.32     avg: 144     median: 146.7 (43%)     max: 150.05 fps
110%
1 3940XM +
161 fps (47%)
TrueCrypt - TrueCrypt Serpent
100%
1 3720QM +
min: 0.27     avg: 0.4     median: 0.4 (0%)     max: 0.513 GB/s
108%
1 3940XM +
min: 0.373     avg: 0.4     median: 0.4 (0%)     max: 0.386 GB/s
TrueCrypt - TrueCrypt Twofish
100%
1 3720QM +
min: 0.39     avg: 0.6     median: 0.6 (0%)     max: 0.606 GB/s
111%
1 3940XM +
min: 0.64     avg: 0.7     median: 0.7 (1%)     max: 0.66 GB/s
TrueCrypt - TrueCrypt AES
100%
1 3720QM +
min: 1.8     avg: 3.1     median: 3.3 (0%)     max: 3.4 GB/s
112%
1 3940XM +
min: 3.5     avg: 3.6     median: 3.7 (0%)     max: 3.7 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 3720QM +
min: 5981     avg: 6581     median: 6642 (37%)     max: 6696 Points
108%
1 3940XM +
min: 7166     avg: 7182     median: 7176 (40%)     max: 7203 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
100%
1 3720QM +
min: 10     avg: 10.3     median: 10.2 (2%)     max: 11 s
100%
1 3940XM +
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 *
100%
1 3720QM +
min: 23     avg: 23.9     median: 24 (1%)     max: 24.305 s
100%
1 3940XM +
min: 21     avg: 21.1     median: 21 (1%)     max: 21.256 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
100%
1 3720QM +
min: 563     avg: 573     median: 571.7 (3%)     max: 594 s
100%
1 3940XM +
min: 518     avg: 526     median: 525.5 (2%)     max: 533 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 3720QM +
min: 100430     avg: 124162     median: 136000 (65%)     max: 136390 MIPS
109%
1 3940XM +
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 3720QM +
min: 75250     avg: 82146     median: 82470 (63%)     max: 85440 MFLOPS
109%
1 3940XM +
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 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
100%
1 3720QM +
min: 12064     avg: 22380     median: 23290 (27%)     max: 23791 Points
111%
1 3940XM +
min: 25344     avg: 25795     median: 25885 (30%)     max: 26157 Points
3DMark 11 - 3DM11 Performance Physics
100%
1 3720QM +
min: 6455     avg: 8020     median: 8217 (35%)     max: 8505 Points
110%
1 3940XM +
min: 7611     avg: 8737     median: 9032 (39%)     max: 9568 Points
3DMark - 3DMark Ice Storm Physics
100%
1 3720QM +
min: 35881     avg: 39128     median: 39127.5 (25%)     max: 42374 Points
124%
1 3940XM +
48410 Points (31%)
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
100%
1 3720QM +
min: 5405     avg: 5873     median: 5921 (15%)     max: 6293 Points
122%
1 3940XM +
7208 Points (18%)
3DMark - 3DMark Fire Strike Standard Physics
100%
1 3720QM +
min: 7455     avg: 8124     median: 8113 (20%)     max: 8803 Points
122%
1 3940XM +
9863 Points (25%)
Geekbench 2 - 32 Bit - Geekbench Stream
100%
1 3720QM +
8890 Points (72%)
Geekbench 2 - 32 Bit - Geekbench Memory
100%
1 3720QM +
7573 Points (69%)
Geekbench 2 - 32 Bit - Geekbench Floating Point
100%
1 3720QM +
12725 Points (25%)
Geekbench 2 - 32 Bit - Geekbench Integer
100%
1 3720QM +
11403 Points (23%)
Geekbench 2 - 32 Bit - Geekbench Total Score
100%
1 3720QM +
10848 Points (28%)
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 → NAN% n=

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

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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)