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

Intel Core i7-3689Y

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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 i7-3940XM

► remove from comparison 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 i7-3689YIntel Core i7-3940XM
Intel Core i7Intel Core i7
Ivy BridgeIvy Bridge
Series: Core i7 Ivy Bridge
Intel Core i7-3940XM3 - 3.9 GHz4 / 88 MB
Intel Core i7-3920XM compare2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-3840QM compare2.8 - 3.8 GHz4 / 88 MB
Intel Core i7-3820QM compare2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-3740QM compare2.7 - 3.7 GHz4 / 86 MB
Intel Core i7-3720QM compare2.6 - 3.6 GHz4 / 86 MB
Intel Core i7-3635QM compare2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3630QM compare2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3615QM compare2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3610QM compare2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3632QM compare2.2 - 3.2 GHz4 / 86 MB
Intel Core i7-3612QM compare2.1 - 3.1 GHz4 / 86 MB
Intel Core i7-3540M compare3 - 3.7 GHz2 / 44 MB
Intel Core i7-3520M compare2.9 - 3.6 GHz2 / 44 MB
Intel Core i7-3687U compare2.1 - 3.3 GHz2 / 44 MB
Intel Core i7-3667U compare2 - 3.2 GHz2 / 44 MB
Intel Core i7-3537U compare2 - 3.1 GHz2 / 44 MB
Intel Core i7-3517U compare1.9 - 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 i7-3920XM compare2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-3840QM compare2.8 - 3.8 GHz4 / 88 MB
Intel Core i7-3820QM compare2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-3740QM compare2.7 - 3.7 GHz4 / 86 MB
Intel Core i7-3720QM compare2.6 - 3.6 GHz4 / 86 MB
Intel Core i7-3635QM compare2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3630QM compare2.4 - 3.4 GHz4 / 86 MB
Intel Core i7-3615QM compare2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3610QM compare2.3 - 3.3 GHz4 / 86 MB
Intel Core i7-3632QM compare2.2 - 3.2 GHz4 / 86 MB
Intel Core i7-3612QM compare2.1 - 3.1 GHz4 / 86 MB
Intel Core i7-3540M compare3 - 3.7 GHz2 / 44 MB
Intel Core i7-3520M compare2.9 - 3.6 GHz2 / 44 MB
Intel Core i7-3687U compare2.1 - 3.3 GHz2 / 44 MB
Intel Core i7-3667U compare2 - 3.2 GHz2 / 44 MB
Intel Core i7-3537U compare2 - 3.1 GHz2 / 44 MB
Intel Core i7-3517U compare1.9 - 3 GHz2 / 44 MB
Intel Core i7-3689Y1.5 - 2.6 GHz2 / 44 MB
1500 - 2600 MHz3000 - 3900 MHz
128 KB256 KB
512 KB1 MB
4 MB8 MB
2 / 44 / 8
13 55
22 22
105 °C105 °C
BGAFCPGA988
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, Virtualization
iGPUIntel HD Graphics 4000 (350 - 850 MHz)Intel HD Graphics 4000 (650 - 1350 MHz)
Architecturex86x86
Intel Core i7 3689Y
1400
160 mm2
$1096 U.S.

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
100%
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 3940XM +
min: 1.62     avg: 1.6     median: 1.6 (52%)     max: 1.63 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 3940XM +
min: 5246     avg: 5255     median: 5252 (47%)     max: 5267
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 3940XM +
min: 20438     avg: 20582     median: 20564 (35%)     max: 20744
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
100%
1 3940XM +
min: 25475     avg: 25600     median: 25624 (24%)     max: 25700 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
100%
1 3940XM +
min: 6506     avg: 6621     median: 6669 (50%)     max: 6687 Points
wPrime 2.10 - wPrime 2.0 1024m *
100%
1 3940XM +
min: 208.8     avg: 219     median: 215.7 (3%)     max: 233 s
wPrime 2.10 - wPrime 2.0 32m *
100%
1 3940XM +
min: 6.8     avg: 7     median: 7 (1%)     max: 7.169 s
WinRAR - WinRAR 4.0
100%
1 3940XM +
min: 3467     avg: 4124     median: 4123.5 (26%)     max: 4780
X264 HD Benchmark 4.0 - x264 Pass 2
100%
1 3940XM +
40.6 fps (18%)
X264 HD Benchmark 4.0 - x264 Pass 1
100%
1 3940XM +
161 fps (47%)
TrueCrypt - TrueCrypt Serpent
100%
1 3940XM +
min: 0.373     avg: 0.4     median: 0.4 (16%)     max: 0.386 GB/s
TrueCrypt - TrueCrypt Twofish
100%
1 3940XM +
min: 0.64     avg: 0.7     median: 0.7 (18%)     max: 0.66 GB/s
TrueCrypt - TrueCrypt AES
100%
1 3940XM +
min: 3.5     avg: 3.6     median: 3.7 (14%)     max: 3.7 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
100%
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 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 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 3940XM +
min: 518     avg: 526     median: 525.5 (2%)     max: 533 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 3940XM +
min: 147240     avg: 147620     median: 147620 (70%)     max: 148000 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 3940XM +
min: 89600     avg: 89630     median: 89630 (69%)     max: 89660 MFLOPS
Windows 7 Experience Index - Win7 CPU
100%
1 3940XM +
7.7 Points (99%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
100%
1 3940XM +
min: 25344     avg: 25795     median: 25885 (30%)     max: 26157 Points
3DMark 11 - 3DM11 Performance Physics
100%
1 3940XM +
min: 7611     avg: 8737     median: 9032 (37%)     max: 9568 Points
3DMark - 3DMark Ice Storm Physics
100%
1 3940XM +
48410 Points (31%)
3DMark - 3DMark Cloud Gate Physics
100%
1 3940XM +
7208 Points (18%)
3DMark - 3DMark Fire Strike Standard Physics
100%
1 3940XM +
9863 Points (25%)

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

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* 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)