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Intel Core i7-3687U vs Intel Core i7-3840QM

Intel Core i7-3687U

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The Intel Core i7-3687U is the fastest ULV-processor for laptops based on the Ivy Bridge architecture at the time of introduction in Q1 2013. 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 2.1 GHz but can dynamically increase clock rates with Turbo Boost up to 3.1 GHz (for 2 active cores) and 3.3 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 i7-3687U is slightly above a similarly clocked Sandy Bridge processor due to the architectural improvements. Therefore, and because of the higher clock speed, the old Core i7-2677M is easily outperformed.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 350 MHz up to 1200 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 i7-3840QM

► remove from comparison Intel 3840QM

The Intel Core i7-3840QM is a fast quad-core processor for laptops based on the Ivy Bridge architecture and successor of the i7-3820QM. 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 2.8 GHz but can dynamically increase clock rates with Turbo Boost up to 3.6 GHz (for 4 active cores), 3.7 GHz (for 2 active cores) and 3.8 GHz (for 1 active core). Furthermore, the CPU offers 8 MB Last Level 3 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 i7-3840QM should be slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. Overall, performance should be similar to the Core i7-3920XM.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1300 MHz with Turbo Boost, making it one of the faster variants.

As with most quad-core Ivy Bridge models, the Core i7-3840QM 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.

ModelIntel Core i7-3687UIntel Core i7-3840QM
SeriesIntel Core i7Intel Core i7
CodenameIvy BridgeIvy Bridge
Series: Core i7 Ivy Bridge
Intel Core i7-3940XM compare3 - 3.9 GHz4 / 8 cores8 MB L3
Intel Core i7-3920XM compare2.9 - 3.8 GHz4 / 8 cores8 MB L3
Intel Core i7-3840QM2.8 - 3.8 GHz4 / 8 cores8 MB L3
Intel Core i7-3820QM compare2.7 - 3.7 GHz4 / 8 cores8 MB L3
Intel Core i7-3740QM compare2.7 - 3.7 GHz4 / 8 cores6 MB L3
Intel Core i7-3720QM compare2.6 - 3.6 GHz4 / 8 cores6 MB L3
Intel Core i7-3635QM compare2.4 - 3.4 GHz4 / 8 cores6 MB L3
Intel Core i7-3630QM compare2.4 - 3.4 GHz4 / 8 cores6 MB L3
Intel Core i7-3615QM compare2.3 - 3.3 GHz4 / 8 cores6 MB L3
Intel Core i7-3610QM compare2.3 - 3.3 GHz4 / 8 cores6 MB L3
Intel Core i7-3632QM compare2.2 - 3.2 GHz4 / 8 cores6 MB L3
Intel Core i7-3612QM compare2.1 - 3.1 GHz4 / 8 cores6 MB L3
Intel Core i7-3540M compare3 - 3.7 GHz2 / 4 cores4 MB L3
Intel Core i7-3520M compare2.9 - 3.6 GHz2 / 4 cores4 MB L3
Intel Core i7-3687U « 2.1 - 3.3 GHz2 / 4 cores4 MB L3
Intel Core i7-3667U compare2 - 3.2 GHz2 / 4 cores4 MB L3
Intel Core i7-3537U compare2 - 3.1 GHz2 / 4 cores4 MB L3
Intel Core i7-3517U compare1.9 - 3 GHz2 / 4 cores4 MB L3
Intel Core i7-3689Y compare1.5 - 2.6 GHz2 / 4 cores4 MB L3
Intel Core i7-3940XM compare3 - 3.9 GHz4 / 8 cores8 MB L3
Intel Core i7-3920XM compare2.9 - 3.8 GHz4 / 8 cores8 MB L3
Intel Core i7-3840QM « 2.8 - 3.8 GHz4 / 8 cores8 MB L3
Intel Core i7-3820QM compare2.7 - 3.7 GHz4 / 8 cores8 MB L3
Intel Core i7-3740QM compare2.7 - 3.7 GHz4 / 8 cores6 MB L3
Intel Core i7-3720QM compare2.6 - 3.6 GHz4 / 8 cores6 MB L3
Intel Core i7-3635QM compare2.4 - 3.4 GHz4 / 8 cores6 MB L3
Intel Core i7-3630QM compare2.4 - 3.4 GHz4 / 8 cores6 MB L3
Intel Core i7-3615QM compare2.3 - 3.3 GHz4 / 8 cores6 MB L3
Intel Core i7-3610QM compare2.3 - 3.3 GHz4 / 8 cores6 MB L3
Intel Core i7-3632QM compare2.2 - 3.2 GHz4 / 8 cores6 MB L3
Intel Core i7-3612QM compare2.1 - 3.1 GHz4 / 8 cores6 MB L3
Intel Core i7-3540M compare3 - 3.7 GHz2 / 4 cores4 MB L3
Intel Core i7-3520M compare2.9 - 3.6 GHz2 / 4 cores4 MB L3
Intel Core i7-3687U2.1 - 3.3 GHz2 / 4 cores4 MB L3
Intel Core i7-3667U compare2 - 3.2 GHz2 / 4 cores4 MB L3
Intel Core i7-3537U compare2 - 3.1 GHz2 / 4 cores4 MB L3
Intel Core i7-3517U compare1.9 - 3 GHz2 / 4 cores4 MB L3
Intel Core i7-3689Y compare1.5 - 2.6 GHz2 / 4 cores4 MB L3
Clock2100 - 3300 MHz2800 - 3800 MHz
L1 Cache128 KB256 KB
L2 Cache512 KB1 MB
L3 Cache4 MB8 MB
Cores / Threads2 / 44 / 8
TDP17 Watt45 Watt
Technology22 nm22 nm
max. Temp.105 °C105 °C
SocketBGA1023
FeaturesHD Graphics 4000 (350-1200 MHz), 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 - 1200 MHz)Intel HD Graphics 4000 (650 - 1300 MHz)
Architecturex86x86
Announced
ManufacturerIntel Core i7 3687U
Transistors1400 Million
Die Size160 mm2
$568 U.S.

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
100%
1 3840QM +
min: 7     avg: 7.1     median: 7.1 (10%)     max: 7.15 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
100%
1 3840QM +
min: 1.58     avg: 1.6     median: 1.6 (5%)     max: 1.59 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 3840QM +
min: 5137     avg: 5145     median: 5144.5 (42%)     max: 5152 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 3840QM +
min: 20132     avg: 20135     median: 20135 (23%)     max: 20138 Points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
100%
1 3840QM +
min: 25111     avg: 25178     median: 25178 (18%)     max: 25245 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
100%
1 3840QM +
min: 6405     avg: 6478     median: 6478 (35%)     max: 6551 Points
wPrime 2.10 - wPrime 2.0 1024m *
100%
1 3840QM +
min: 245     avg: 246.3     median: 246.3 (3%)     max: 247.5 s
wPrime 2.10 - wPrime 2.0 32m *
100%
1 3840QM +
min: 7.348     avg: 7.4     median: 7.4 (1%)     max: 7.441 s
WinRAR - WinRAR 4.0
100%
1 3840QM +
4712 Points (27%)
X264 HD Benchmark 4.0 - x264 Pass 2
100%
1 3840QM +
min: 37.11     avg: 38.2     median: 38.2 (14%)     max: 39.23 fps
X264 HD Benchmark 4.0 - x264 Pass 1
100%
1 3840QM +
min: 156.2     avg: 157.8     median: 157.8 (37%)     max: 159.4 fps
TrueCrypt - TrueCrypt Serpent
100%
1 3840QM +
min: 0.375     avg: 0.4     median: 0.4 (0%)     max: 0.376 GB/s
TrueCrypt - TrueCrypt Twofish
100%
1 3840QM +
min: 0.638     avg: 0.6     median: 0.6 (0%)     max: 0.642 GB/s
TrueCrypt - TrueCrypt AES
100%
1 3840QM +
3.6 GB/s (0%)
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 3840QM +
min: 6946     avg: 6998     median: 6998 (15%)     max: 7050 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
100%
1 3840QM +
min: 9     avg: 9.4     median: 9.4 (2%)     max: 9.703 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
100%
1 3840QM +
min: 21.97     avg: 22     median: 22 (1%)     max: 22 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
100%
1 3840QM +
541 s (2%)
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 3840QM +
124100 MIPS (59%)
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 3840QM +
85000 MFLOPS (65%)
Windows 7 Experience Index - Win7 CPU
100%
1 3840QM +
7.7 Points (99%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
100%
1 3840QM +
min: 24545     avg: 24741     median: 24740.5 (23%)     max: 24936 Points
3DMark 11 - 3DM11 Performance Physics
100%
1 3840QM +
min: 7360     avg: 7787     median: 7786.5 (21%)     max: 8213 Points

Average Benchmarks Intel Core i7-3840QM → 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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show all (including archived), 2023, 2022
v1.22
log 27. 19:46:49

#0 checking url part for id 3630 +0s ... 0s

#1 checking url part for id 3346 +0s ... 0s

#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Wed, 25 Jan 2023 08:57:11 +0100 +0.001s ... 0.001s

#4 composed specs +0.022s ... 0.023s

#5 did output specs +0s ... 0.023s

#6 getting avg benchmarks for device 3630 +0.001s ... 0.025s

#7 got single benchmarks 3630 +0s ... 0.025s

#8 getting avg benchmarks for device 3346 +0.001s ... 0.026s

#9 got single benchmarks 3346 +0.009s ... 0.035s

#10 got avg benchmarks for devices +0s ... 0.035s

#11 min, max, avg, median took s +0.047s ... 0.082s

#12 return log +0.039s ... 0.121s

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)