Intel Core i7-3667U vs Intel Core i7-3940XM vs Intel Core i7-3517U

Intel Core i7-3667U

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The Intel Core i7-3667U is the fastest ULV-processor for laptops based on the Ivy Bridge architecture at the time of introduction in Q2 2012. 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 2.0 GHz but can dynamically increase clock rates with Turbo Boost up to 3.0 GHz (for 2 active cores) and 3.2 GHz (for 1 active core). As its Sandy-Bridge-based predecessors, 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 i7-3667U is slightly above a similarly clocked Sandy Bridge processor due to the architectural improvements. Therefore, and because of the higher clock speed, the Core i7-2677M is easily outperformed by 10 to 15%.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 350 MHz up to 1150 MHz with Turbo Boost, delivering a performance comparable with an AMD Radeon HD 6620G.

The ULV-CPUs are rated at a TDP of 17 W including graphics card and memory controller.  Therefore, the CPU is suited for small laptops and ultrabooks.

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 i7-3517U

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The Intel Core i7-3517U is a fast ULV-processor for laptops based on the Ivy Bridge architecture released in Q2 2012. 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 1.9 GHz but can dynamically increase clock rates with Turbo Boost up to 2.8 GHz (for 2 active cores) and 3.0 GHz (for 1 active core). As its Sandy-Bridge-based predecessors, 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 i7-3517U is slightly above a similarly clocked Sandy Bridge processor due to the architectural improvements. Therefore, and because of the higher clock speed, the older Core i7-2677M is easily outperformed.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 350 MHz up to 1150 MHz with Turbo Boost, delivering a performance comparable with an AMD Radeon HD 6620G.

The ULV-CPUs are rated at a TDP of 17 W including graphics card and memory controller.  Therefore, the CPU is suited for small laptops and ultrabooks.

Intel Core i7-3667UIntel Core i7-3940XMIntel Core i7-3517U
Intel Core i7Intel Core i7Intel Core i7
Ivy BridgeIvy BridgeIvy Bridge
: Core i7 Ivy Bridge
Intel Core i7-3940XM3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM2900 - 3800 MHz4 / 88 MB
Intel Core i7-3840QM2800 - 3800 MHz4 / 88 MB
Intel Core i7-3820QM2700 - 3700 MHz4 / 88 MB
Intel Core i7-3740QM2700 - 3700 MHz4 / 86 MB
Intel Core i7-3720QM2600 - 3600 MHz4 / 86 MB
Intel Core i7-3635QM2400 - 3400 MHz4 / 86 MB
Intel Core i7-3630QM2400 - 3400 MHz4 / 86 MB
Intel Core i7-3615QM2300 - 3300 MHz4 / 86 MB
Intel Core i7-3610QM2300 - 3300 MHz4 / 86 MB
Intel Core i7-3632QM2200 - 3200 MHz4 / 86 MB
Intel Core i7-3612QM2100 - 3100 MHz4 / 86 MB
Intel Core i7-3540M3000 - 3700 MHz2 / 44 MB
Intel Core i7-3520M2900 - 3600 MHz2 / 44 MB
Intel Core i7-3687U2100 - 3300 MHz2 / 44 MB
» Intel Core i7-3667U2000 - 3200 MHz2 / 44 MB
Intel Core i7-3537U2000 - 3100 MHz2 / 44 MB
Intel Core i7-3517U1900 - 3000 MHz2 / 44 MB
Intel Core i7-3689Y1500 - 2600 MHz2 / 44 MB
» Intel Core i7-3940XM3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM2900 - 3800 MHz4 / 88 MB
Intel Core i7-3840QM2800 - 3800 MHz4 / 88 MB
Intel Core i7-3820QM2700 - 3700 MHz4 / 88 MB
Intel Core i7-3740QM2700 - 3700 MHz4 / 86 MB
Intel Core i7-3720QM2600 - 3600 MHz4 / 86 MB
Intel Core i7-3635QM2400 - 3400 MHz4 / 86 MB
Intel Core i7-3630QM2400 - 3400 MHz4 / 86 MB
Intel Core i7-3615QM2300 - 3300 MHz4 / 86 MB
Intel Core i7-3610QM2300 - 3300 MHz4 / 86 MB
Intel Core i7-3632QM2200 - 3200 MHz4 / 86 MB
Intel Core i7-3612QM2100 - 3100 MHz4 / 86 MB
Intel Core i7-3540M3000 - 3700 MHz2 / 44 MB
Intel Core i7-3520M2900 - 3600 MHz2 / 44 MB
Intel Core i7-3687U2100 - 3300 MHz2 / 44 MB
Intel Core i7-3667U2000 - 3200 MHz2 / 44 MB
Intel Core i7-3537U2000 - 3100 MHz2 / 44 MB
Intel Core i7-3517U1900 - 3000 MHz2 / 44 MB
Intel Core i7-3689Y1500 - 2600 MHz2 / 44 MB
Intel Core i7-3940XM3000 - 3900 MHz4 / 88 MB
Intel Core i7-3920XM2900 - 3800 MHz4 / 88 MB
Intel Core i7-3840QM2800 - 3800 MHz4 / 88 MB
Intel Core i7-3820QM2700 - 3700 MHz4 / 88 MB
Intel Core i7-3740QM2700 - 3700 MHz4 / 86 MB
Intel Core i7-3720QM2600 - 3600 MHz4 / 86 MB
Intel Core i7-3635QM2400 - 3400 MHz4 / 86 MB
Intel Core i7-3630QM2400 - 3400 MHz4 / 86 MB
Intel Core i7-3615QM2300 - 3300 MHz4 / 86 MB
Intel Core i7-3610QM2300 - 3300 MHz4 / 86 MB
Intel Core i7-3632QM2200 - 3200 MHz4 / 86 MB
Intel Core i7-3612QM2100 - 3100 MHz4 / 86 MB
Intel Core i7-3540M3000 - 3700 MHz2 / 44 MB
Intel Core i7-3520M2900 - 3600 MHz2 / 44 MB
Intel Core i7-3687U2100 - 3300 MHz2 / 44 MB
Intel Core i7-3667U2000 - 3200 MHz2 / 44 MB
Intel Core i7-3537U2000 - 3100 MHz2 / 44 MB
» Intel Core i7-3517U1900 - 3000 MHz2 / 44 MB
Intel Core i7-3689Y1500 - 2600 MHz2 / 44 MB
2000 - 3200 MHz3000 - 3900 MHz1900 - 3000 MHz
128 KB256 KB128 KB
512 KB1 MB512 KB
4 MB8 MB4 MB
2 / 44 / 82 / 4
17 55 17
22 22 22
105 °C105 °C
BGA1023FCPGA988
Turbo 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 BitHD 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 (350 - 1150 MHz)Intel HD Graphics 4000 (650 - 1350 MHz)Intel HD Graphics 4000 (350 - 1150 MHz)
$346 U.S.$1096 U.S.
Intel Core i7 3667UIntel Core i7 3517U
1400
160 mm2

Cinebench R11.5 - CPU Multi 64Bit
2.8 Points (6%)
7.5 Points (17%)
2.7 Points (6%)
Cinebench R11.5 - CPU Single 64Bit
1.3 Points (66%)
1.6 Points (81%)
1.2 Points (61%)
Cinebench R10 - Rendering Single 32Bit
min: 3975     avg: 4215     median: 4215 (43%)     max: 4455 Points
min: 5246     avg: 5255     median: 5252 (54%)     max: 5267 Points
min: 3860     avg: 4040.5     median: 4024 (41%)     max: 4170 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 8290     avg: 8809.5     median: 8809 (13%)     max: 9329 Points
min: 20438     avg: 20582     median: 20564 (31%)     max: 20744 Points
min: 8015     avg: 8524     median: 8596 (13%)     max: 8704 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 10253     avg: 11057.2     median: 11294 (15%)     max: 11387 Points
min: 25475     avg: 25599.7     median: 25624 (34%)     max: 25700 Points
min: 9842     avg: 10588.8     median: 10674 (14%)     max: 10904 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5363     avg: 5524     median: 5563 (54%)     max: 5607 Points
min: 6506     avg: 6620.7     median: 6669 (64%)     max: 6687 Points
min: 4625     avg: 5101.6     median: 5136 (50%)     max: 5263 Points
wPrime 2.0x - 1024m *
min: 529     avg: 591.2     median: 569 (7%)     max: 674 seconds
min: 208     avg: 219.2     median: 215 (3%)     max: 233 seconds
min: 556     avg: 605.4     median: 597 (7%)     max: 698 seconds
wPrime 2.0x - 32m *
min: 16     avg: 17.4     median: 17 (3%)     max: 18 seconds
min: 6     avg: 7     median: 6 (1%)     max: 7 seconds
min: 17     avg: 18.6     median: 18 (4%)     max: 20 seconds
WinRAR - Result
min: 2413     avg: 2474     median: 2474 (29%)     max: 2535 KB/s
min: 3467     avg: 4123.5     median: 4123 (48%)     max: 4780 KB/s
min: 2376     avg: 2631.1     median: 2465 (29%)     max: 3682 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 14     avg: 15.4     median: 15 (0%)     max: 16 fps
40.6 fps (1%)
min: 14     avg: 15.6     median: 15 (0%)     max: 16 fps
X264 HD Benchmark 4.0 - Pass 1
min: 86     avg: 87     median: 87 (32%)     max: 87 fps
161.1 fps (60%)
min: 82     avg: 83.3     median: 82 (30%)     max: 85 fps
TrueCrypt - Serpent Mean 100MB
0.2 GB/s (8%)
0.4 GB/s (19%)
0.2 GB/s (8%)
TrueCrypt - Twofish Mean 100MB
0.3 GB/s (9%)
0.7 GB/s (22%)
0.3 GB/s (8%)
TrueCrypt - AES Mean 100MB
1.5 GB/s (7%)
3.6 GB/s (18%)
min: 0     avg: 1.2     median: 1 (5%)     max: 1 GB/s
3DMark 06 - CPU
min: 3393     avg: 3566.8     median: 3594 (24%)     max: 3685 Points
min: 7166     avg: 7181.7     median: 7176 (48%)     max: 7203 Points
min: 2949     avg: 3381.8     median: 3430 (23%)     max: 3570 Points
Super Pi mod 1.5 XS 1M *
min: 11     avg: 11.5     median: 11 (2%)     max: 12 Seconds
9.2 Seconds (2%)
min: 12     avg: 12.7     median: 12 (3%)     max: 13 Seconds
Super Pi mod 1.5 XS 2M *
min: 27     avg: 27.4     median: 27 (1%)     max: 28 Seconds
21.1 Seconds (1%)
min: 28     avg: 29.2     median: 29 (1%)     max: 30 Seconds
Super Pi Mod 1.5 XS 32M *
min: 640     avg: 647.6     median: 647 (3%)     max: 655 Seconds
min: 518     avg: 525.5     median: 525 (2%)     max: 533 Seconds
min: 668     avg: 691.1     median: 683 (3%)     max: 767 Seconds
SiSoft Sandra Dhrystone (MIPS)
52000 MIPS (25%)
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
min: 47300     avg: 50912.5     median: 50800 (24%)     max: 54750 MIPS
SiSoft Sandra Whetstone (MFLOPS)
36570 MFLOPS (28%)
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
min: 34130     avg: 34857.5     median: 35035 (27%)     max: 35230 MFLOPS
Windows 7 Experience Index - Processor
7.1 points (101%)
7.7 points (110%)
7.1 points (101%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 8295     avg: 9039     median: 9222 (13%)     max: 9600 Points
min: 25344     avg: 25795.3     median: 25885 (36%)     max: 26157 Points
min: 6288     avg: 8845.8     median: 9288 (13%)     max: 9552 Points
3DMark 11 - Performance Physics 1280x720
min: 2618     avg: 3129     median: 3231 (17%)     max: 3436 points
min: 7611     avg: 8737     median: 9032 (46%)     max: 9568 points
min: 2966     avg: 3436.6     median: 3409 (18%)     max: 3988 points
3DMark - Ice Storm Standard Physics 1280x720
48410 Points (31%)
31781 Points (20%)
3DMark - Cloud Gate Standard Physics 1280x720
7208 Points (18%)
2734 Points (7%)
3DMark - Fire Strike Physics 1920x1080
9863 Points (30%)
3880 Points (12%)
Geekbench 2 - 32 Bit - Stream
5172 Points (42%)
Geekbench 2 - 32 Bit - Memory
5174 Points (47%)
Geekbench 2 - 32 Bit - Floating Point
6165 Points (11%)
Geekbench 2 - 32 Bit - Integer
5564 Points (10%)
Geekbench 2 - 32 Bit - Total Score
5657 Points (13%)
Sunspider - 0.9.1 Total Score *
128 ms (1%)

Average Benchmarks Intel Core i7-3667U → 100%

Average Benchmarks Intel Core i7-3940XM → 178%

Average Benchmarks Intel Core i7-3517U → 93%

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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)