Intel Core i7-3720QM vs Intel Core i7-3840QM

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CPU comparison with benchmarks


Intel Core i7-3720QM CPU1 vs CPU2 Intel Core i7-3840QM
Intel Core i7-3720QM Intel Core i7-3840QM

CPU comparison

Intel Core i7-3720QM or Intel Core i7-3840QM - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i7-3720QM has 4 cores with 8 threads and clocks with a maximum frequency of 3.60 GHz. Up to 32 GB of memory is supported in 2 memory channels. The Intel Core i7-3720QM was released in Q2/2012.

The Intel Core i7-3840QM has 4 cores with 8 threads and clocks with a maximum frequency of 3.80 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The Intel Core i7-3840QM was released in Q3/2012.
Intel Core i7 (298) Family Intel Core i7 Extreme Edition (24)
Intel Core i 3000M (29) CPU group Intel Core i 3000M (29)
3 Generation 3
Ivy Bridge H Architecture Ivy Bridge H
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i7-3720QM is a 4 core processor with a clock frequency of 2.60 GHz (3.60 GHz). The Intel Core i7-3840QM has 4 CPU cores with a clock frequency of 2.80 GHz (3.80 GHz).

Intel Core i7-3720QM Characteristic Intel Core i7-3840QM
4 Cores 4
8 Threads 8
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? Yes
2.60 GHz Frequency 2.80 GHz
3.60 GHz Turbo Frequency (1 Core) 3.80 GHz
-- Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Intel Core i7-3720QM Characteristic Intel Core i7-3840QM
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

Intel HD Graphics 4000 GPU Intel HD Graphics 4000
0.65 GHz GPU frequency 0.65 GHz
1.25 GHz GPU (Turbo) 1.30 GHz
7 GPU Generation 7
22 nm Technology 22 nm
3 Max. displays 3
16 Compute units 16
128 Shader 128
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory 2 GB
11.0 DirectX Version 11.0

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel HD Graphics 4000 GPU Intel HD Graphics 4000
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode Codec JPEG Decode

Memory & PCIe

The Intel Core i7-3720QM supports a maximum of 32 GB of memory in 2 memory channels. The Intel Core i7-3840QM can connect up to 32 GB of memory in 2 memory channels.

Intel Core i7-3720QM Characteristic Intel Core i7-3840QM
DDR3L-1333, DDR3L-1600, DDR3-1333, DDR3-1600 Memory DDR3L-1333, DDR3L-1600, DDR3-1333, DDR3-1600
32 GB Max. Memory 32 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 25.6 GB/s
No ECC No
-- L2 Cache --
6.00 MB L3 Cache 8.00 MB
3.0 PCIe version 3.0
16 PCIe lanes 16
15.8 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i7-3720QM has a TDP of 45 W, that of the Intel Core i7-3840QM is 45 W.

Intel Core i7-3720QM Characteristic Intel Core i7-3840QM
45 W TDP (PL1 / PBP) 45 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
105 °C Tjunction max. 105 °C

Technical details

The Intel Core i7-3720QM has a 6.00 MB cache, while the Intel Core i7-3840QM cache has a total of 8.00 MB.

Intel Core i7-3720QM Characteristic Intel Core i7-3840QM
22 nm Technology 22 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX ISA extensions SSE4.1, SSE4.2, AVX
BGA 1224 Socket PGA 988
VT-x, VT-x EPT Virtualization VT-x, VT-x EPT
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q2/2012 Release date Q3/2012
363 $ Release price 568 $
show more data show more data


Rate these processors

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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i7-3720QM (98%)
Intel Core i7-3840QM (99%)
⌀ Multi core performance in 4 CPU benchmarks
Intel Core i7-3720QM (97%)
Intel Core i7-3840QM (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i7-3720QM Intel Core i7-3720QM
4C 8T @ 3.60 GHz
758 (96%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 3.80 GHz
793 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i7-3720QM Intel Core i7-3720QM
4C 8T @ 2.60 GHz
3044 (99%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
3089 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i7-3720QM Intel Core i7-3720QM
4C 8T @ 3.60 GHz
702 (100%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 3.80 GHz
686 (98%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i7-3720QM Intel Core i7-3720QM
4C 8T @ 2.60 GHz
2489 (96%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
2588 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i7-3720QM Intel Core i7-3720QM
Intel HD Graphics 4000 @ 1.25 GHz
320 (96%)
Intel Core i7-3840QM Intel Core i7-3840QM
Intel HD Graphics 4000 @ 1.30 GHz
333 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i7-3720QM Intel Core i7-3720QM
4C 8T @ 2.60 GHz
5689 (96%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
5911 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i7-3720QM Intel Core i7-3720QM
4C 8T @ 2.60 GHz
1672 (98%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
1699 (100%)

Devices using this processor

Intel Core i7-3720QM Intel Core i7-3840QM
Unknown Unknown

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