Intel Core i7-3517U vs Intel Core i7-3940XM vs Intel Core i7-3520M

Intel Core i7-3517U

► remove

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 i7-3940XM

► 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 i7-3520M

► remove Intel 3520M

The Intel Core i7-3520M is the fastest dual-core 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 2.9 GHz but can dynamically increase clock rates with Turbo Boost up to 3.4 GHz (for 2 active cores) and 3.6 GHz (for 1 active core). As its Sandy-Bridge-based predecessor Core i7-2640M, 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 i7-3520M is slightly above a similarly clocked Sandy Bridge processor due to the architectural improvements. As a result, overall performance is about 5 - 10 % above the old i7-2640M (see benchmarks below).

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 fastest variants.

Just like most other Ivy Bridge dual-cores, the i7-3520M is rated at a TDP of 35 W. Therefore, even smaller laptops can use the Core i7.

Intel Core i7-3517UIntel Core i7-3940XMIntel Core i7-3520M
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
1900 - 3000 MHz3000 - 3900 MHz2900 - 3600 MHz
128 KB256 KB128 KB
512 KB1 MB512 KB
4 MB8 MB4 MB
2 / 44 / 82 / 4
17 55 35
22 22 22
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, VirtualizationHD Graphics 4000, DDR3-1600 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization
iGPUIntel HD Graphics 4000 (350 - 1150 MHz)Intel HD Graphics 4000 (650 - 1350 MHz)Intel HD Graphics 4000 (650 - 1250 MHz)
Intel Core i7 3517UIntel Core i7 3520M
1400
160 mm2
105 °C105 °C
FCPGA988BGA1023, PGA988
$1096 U.S.$346 U.S.

Cinebench R11.5 - CPU Multi 64Bit
min: 2.51     avg: 2.7     median: 2.8 (6%)     max: 2.82 Points
min: 7.45     avg: 7.5     median: 7.5 (17%)     max: 7.46 Points
min: 3     avg: 3.3     median: 3.4 (8%)     max: 3.44 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.14     avg: 1.2     median: 1.2 (48%)     max: 1.25 Points
min: 1.62     avg: 1.6     median: 1.6 (63%)     max: 1.63 Points
min: 1.41     avg: 1.4     median: 1.5 (57%)     max: 1.47 Points
Cinebench R10 - Rendering Single 32Bit
min: 3860     avg: 4041     median: 4024.5 (41%)     max: 4170 Points
min: 5246     avg: 5255     median: 5252 (54%)     max: 5267 Points
min: 4408     avg: 4813     median: 4855 (50%)     max: 4903 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 8015     avg: 8524     median: 8596.5 (14%)     max: 8704 Points
min: 20438     avg: 20582     median: 20564 (35%)     max: 20744 Points
min: 9112     avg: 10167     median: 10467 (18%)     max: 10605 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 9842     avg: 10589     median: 10674 (12%)     max: 10904 Points
min: 25475     avg: 25600     median: 25624 (30%)     max: 25700 Points
min: 11581     avg: 12766     median: 12889.5 (15%)     max: 13151 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 4625     avg: 5102     median: 5136 (48%)     max: 5263 Points
min: 6506     avg: 6621     median: 6669 (62%)     max: 6687 Points
min: 6029     avg: 6128     median: 6146.5 (57%)     max: 6203 Points
wPrime 2.0x - 1024m *
min: 556.58     avg: 605     median: 597.4 (7%)     max: 698.396 seconds
min: 208.8     avg: 219     median: 215.7 (3%)     max: 233 seconds
min: 456     avg: 493     median: 492.1 (6%)     max: 569.853 seconds
wPrime 2.0x - 32m *
min: 17.5     avg: 18.6     median: 18.8 (4%)     max: 20.642 seconds
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 seconds
min: 14.4     avg: 15.5     median: 15.4 (3%)     max: 17.097 seconds
WinRAR - Result
min: 2376     avg: 2631     median: 2465 (25%)     max: 3682 KB/s
min: 3467     avg: 4124     median: 4123.5 (42%)     max: 4780 KB/s
min: 2661     avg: 2863     median: 2715 (28%)     max: 3527 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 14.38     avg: 15.5     median: 15.9 (9%)     max: 16 fps
40.6 fps (24%)
min: 6.7     avg: 16.1     median: 18.9 (11%)     max: 19.44 fps
X264 HD Benchmark 4.0 - Pass 1
min: 82.28     avg: 83.3     median: 83 (29%)     max: 85.04 fps
161 fps (56%)
min: 35.1     avg: 86.2     median: 98.6 (34%)     max: 101.8 fps
TrueCrypt - Serpent Mean 100MB
min: 0.144     avg: 0.1     median: 0.1 (6%)     max: 0.15 GB/s
min: 0.373     avg: 0.4     median: 0.4 (17%)     max: 0.386 GB/s
min: 0.164     avg: 0.2     median: 0.2 (8%)     max: 0.176 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.245     avg: 0.2     median: 0.2 (7%)     max: 0.25 GB/s
min: 0.64     avg: 0.7     median: 0.7 (18%)     max: 0.66 GB/s
min: 0.249     avg: 0.3     median: 0.3 (8%)     max: 0.302 GB/s
TrueCrypt - AES Mean 100MB
min: 0.274     avg: 1.2     median: 1.4 (7%)     max: 1.4 GB/s
min: 3.5     avg: 3.6     median: 3.7 (19%)     max: 3.7 GB/s
min: 1.2     avg: 1.6     median: 1.7 (9%)     max: 1.7 GB/s
3DMark 06 - CPU
min: 2949     avg: 3382     median: 3430 (23%)     max: 3570 Points
min: 7166     avg: 7182     median: 7176 (48%)     max: 7203 Points
min: 3528     avg: 4086     median: 4134 (28%)     max: 4212 Points
Super Pi mod 1.5 XS 1M *
min: 12     avg: 12.7     median: 12.7 (3%)     max: 13.5 Seconds
min: 9     avg: 9.2     median: 9 (2%)     max: 9.554 Seconds
min: 10     avg: 10.3     median: 10 (2%)     max: 10.94 Seconds
Super Pi mod 1.5 XS 2M *
min: 28     avg: 29.2     median: 29.2 (1%)     max: 30.4 Seconds
min: 21     avg: 21.1     median: 21 (1%)     max: 21.256 Seconds
min: 24     avg: 24.8     median: 25 (1%)     max: 25.866 Seconds
Super Pi Mod 1.5 XS 32M *
min: 668     avg: 691     median: 683.1 (3%)     max: 767.508 Seconds
min: 518     avg: 526     median: 525.5 (2%)     max: 533 Seconds
min: 565     avg: 591     median: 594 (3%)     max: 612 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 47300     avg: 50913     median: 50800 (24%)     max: 54750 MIPS
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
min: 55800     avg: 63808     median: 67130 (32%)     max: 69140 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 34130     avg: 34858     median: 35035 (27%)     max: 35230 MFLOPS
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
min: 41450     avg: 42502     median: 42450 (33%)     max: 44032 MFLOPS
Windows 7 Experience Index - Processor
min: 7     avg: 7.1     median: 7.1 (91%)     max: 7.1 points
7.7 points (99%)
7.2 points (92%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 6288     avg: 8846     median: 9288.5 (13%)     max: 9552 Points
min: 25344     avg: 25795     median: 25885 (36%)     max: 26157 Points
min: 9277     avg: 11188     median: 11511 (16%)     max: 11788 Points
3DMark 11 - Performance Physics 1280x720
min: 2966     avg: 3437     median: 3409 (15%)     max: 3988 points
min: 7611     avg: 8737     median: 9032 (41%)     max: 9568 points
min: 3582     avg: 4275     median: 4466 (20%)     max: 4774 points
3DMark - Ice Storm Standard Physics 1280x720
31781 Points (20%)
48410 Points (31%)
39221 Points (25%)
3DMark - Cloud Gate Standard Physics 1280x720
2734 Points (7%)
7208 Points (18%)
3393 Points (9%)
3DMark - Fire Strike Physics 1920x1080
3880 Points (12%)
9863 Points (31%)
4772 Points (15%)
Geekbench 2 - 32 Bit - Stream
5172 Points (42%)
Geekbench 2 - 32 Bit - Memory
5174 Points (47%)
Geekbench 2 - 32 Bit - Floating Point
6165 Points (12%)
Geekbench 2 - 32 Bit - Integer
5564 Points (11%)
Geekbench 2 - 32 Bit - Total Score
5657 Points (15%)

Average Benchmarks Intel Core i7-3517U → 100%

Average Benchmarks Intel Core i7-3940XM → 197%

Average Benchmarks Intel Core i7-3520M → 117%

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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)