Intel Core i7-3840QM vs Intel Core i7-3920XM

Intel Core i7-3840QM

► remove 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.

Intel Core i7-3920XM

► remove Intel 3920XM

The Intel Core i7-3920XM is the fastest quad-core processor for laptops based on the Ivy Bridge architecture at the time of introduction in April 2012. 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 2.9 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 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 i7-3920XM is slightly (~5 %) above a similarly clocked Sandy Bridge processor due to slight architectural improvements. Therefore, and because of the higher clock speed, the former champion Core i7-2960XM is easily outperformed by 10 to 15%.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1300 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 i7-3840QMIntel Core i7-3920XM
Intel Core i7Intel Core i7
Ivy BridgeIvy Bridge
: Core i7 Ivy Bridge
Intel Core i7-3940XM compare3 - 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 i7-3820QM 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 i7-3689Y compare1.5 - 2.6 GHz2 / 44 MB
Intel Core i7-3940XM compare3 - 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 i7-3820QM 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 i7-3689Y compare1.5 - 2.6 GHz2 / 44 MB
2800 - 3800 MHz2900 - 3800 MHz
256 KB256 KB
1 MB1 MB
8 MB8 MB
4 / 84 / 8
45 55
1400 1400
22 22
160 mm2160 mm2
105 °C105 °C
HD Graphics 4000, DDR3(L)-1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 4000, DDR3(L)-1600 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization
iGPUIntel HD Graphics 4000 (650 - 1300 MHz)Intel HD Graphics 4000 (650 - 1300 MHz)
Architecturex86x86
$568 U.S.$1096 U.S.
FCPGA988
Intel Core i7 3920XM

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 7     avg: 7.1     median: 7.1 (14%)     max: 7.15 Points
min: 6.89     avg: 7.1     median: 7.1 (14%)     max: 7.22 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.58     avg: 1.6     median: 1.6 (50%)     max: 1.59 Points
min: 1.53     avg: 1.6     median: 1.6 (50%)     max: 1.58 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 5137     avg: 5145     median: 5144.5 (46%)     max: 5152
min: 5045     avg: 5078     median: 5078 (45%)     max: 5111
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 20132     avg: 20135     median: 20135 (34%)     max: 20138
min: 19595     avg: 19653     median: 19652.5 (33%)     max: 19710
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 25111     avg: 25178     median: 25178 (24%)     max: 25245 Points
min: 19756     avg: 23050     median: 24647 (24%)     max: 24748 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 6405     avg: 6478     median: 6478 (49%)     max: 6551 Points
min: 5132     avg: 6011     median: 6416 (48%)     max: 6484 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 245     avg: 246     median: 246.2 (3%)     max: 247.481 s
min: 220.9     avg: 242     median: 241.8 (3%)     max: 262.698 s
wPrime 2.10 - wPrime 2.0 32m *
min: 7.348     avg: 7.4     median: 7.4 (1%)     max: 7.441 s
min: 7.412     avg: 7.5     median: 7.5 (2%)     max: 7.539 s
WinRAR - WinRAR 4.0
4712 (30%)
4570 (29%)
X264 HD Benchmark 4.0 - x264 Pass 2
min: 37.11     avg: 38.2     median: 38.2 (17%)     max: 39.23 fps
min: 37.1     avg: 38     median: 38 (17%)     max: 38.9 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 156.2     avg: 158     median: 157.8 (47%)     max: 159.37 fps
min: 156.42     avg: 157     median: 156.7 (46%)     max: 157 fps
TrueCrypt - TrueCrypt Serpent
min: 0.375     avg: 0.4     median: 0.4 (0%)     max: 0.376 GB/s
min: 0.366     avg: 0.4     median: 0.4 (0%)     max: 0.373 GB/s
TrueCrypt - TrueCrypt Twofish
min: 0.638     avg: 0.6     median: 0.6 (0%)     max: 0.642 GB/s
min: 0.562     avg: 0.6     median: 0.6 (0%)     max: 0.633 GB/s
TrueCrypt - TrueCrypt AES
3.6 GB/s (0%)
min: 3.5     avg: 3.6     median: 3.6 (0%)     max: 3.6 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
min: 6946     avg: 6998     median: 6998 (39%)     max: 7050 Points
min: 6793     avg: 6935     median: 6973 (39%)     max: 7039 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 9     avg: 9.4     median: 9.4 (2%)     max: 9.703 s
min: 9     avg: 9.4     median: 9 (2%)     max: 10.109 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 21.965     avg: 22     median: 22 (1%)     max: 22 s
min: 22     avg: 22.3     median: 22 (1%)     max: 22.984 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
541 s (2%)
min: 531     avg: 534     median: 534 (2%)     max: 537 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
124100 MIPS (59%)
min: 115400     avg: 129935     median: 129935 (62%)     max: 144470 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
85000 MFLOPS (65%)
min: 83580     avg: 85345     median: 85345 (65%)     max: 87110 MFLOPS
Windows 7 Experience Index - Win7 CPU
7.7 Points (99%)
7.7 Points (99%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 24545     avg: 24741     median: 24740.5 (29%)     max: 24936 Points
min: 24085     avg: 24928     median: 25094 (29%)     max: 25605 Points
3DMark 11 - 3DM11 Performance Physics
min: 7360     avg: 7787     median: 7786.5 (33%)     max: 8213 Points
9329 Points (40%)

Average Benchmarks Intel Core i7-3840QM → 100% n=23

Average Benchmarks Intel Core i7-3920XM → 100% n=23

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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)