Intel Core i7-3820QM vs Intel Core i7-3840QM

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CPU comparison with benchmarks


Intel Core i7-3820QM CPU1 vs CPU2 Intel Core i7-3840QM
Intel Core i7-3820QM Intel Core i7-3840QM

CPU comparison

In this CPU comparison, we compare the Intel Core i7-3820QM and the Intel Core i7-3840QM and use benchmarks to check which processor is faster.

We compare the Intel Core i7-3820QM 4 core processor released in Q2/2012 with the Intel Core i7-3840QM which has 4 CPU cores and was introduced in Q3/2012.
Intel Core i7 Extreme Edition (24) 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
Notebook Segment Notebook
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i7-3820QM is a 4 core processor with a clock frequency of 2.70 GHz (3.70 GHz). The processor can compute 8 threads at the same time. The Intel Core i7-3840QM clocks with 2.80 GHz (3.80 GHz), has 4 CPU cores and can calculate 8 threads in parallel.

Intel Core i7-3820QM Characteristic Intel Core i7-3840QM
4 Cores 4
8 Threads 8
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
2.70 GHz Frequency 2.80 GHz
3.70 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 i7-3820QM Characteristic Intel Core i7-3840QM
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

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

Up to 32 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i7-3820QM, while the Intel Core i7-3840QM supports a maximum of 32 GB of memory with a maximum memory bandwidth of 25.6 GB/s enabled.

Intel Core i7-3820QM 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 --
8.00 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 Intel Core i7-3820QM has a TDP of 45 W. The TDP of the Intel Core i7-3840QM is 45 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i7-3820QM 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 i7-3820QM has 8.00 MB cache and is manufactured in 22 nm. The cache of Intel Core i7-3840QM is at 8.00 MB. The processor is manufactured in 22 nm.

Intel Core i7-3820QM 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
568 $ Release price 568 $
show more data show more data


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Average performance in benchmarks

Single core performance in 2 CPU benchmarks
Intel Core i7-3820QM (98%)
Intel Core i7-3840QM (100%)
Multi core performance in 4 CPU benchmarks
Intel Core i7-3820QM (97%)
Intel Core i7-3840QM (100%)

Price-performance ratio

Geekbench 6 multi-core score divided by the processor's release price. Higher is better.
Intel Core i7-3820QM Intel Core i7-3820QM
Geekbench 6 MT: 2,517 / 568 $
4.43
Intel Core i7-3840QM Intel Core i7-3840QM
Geekbench 6 MT: 2,588 / 568 $
4.56

Geekbench 6 (Single-Core)

Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
Intel Core i7-3820QM Intel Core i7-3820QM
4C 8T @ 3.70 GHz
675 (98%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 3.80 GHz
686 (100%)

Geekbench 6 (Multi-Core)

The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
Intel Core i7-3820QM Intel Core i7-3820QM
4C 8T @ 2.70 GHz
2517 (97%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
2588 (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 i7-3820QM Intel Core i7-3820QM
4C 8T @ 3.70 GHz
774 (98%)
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 i7-3820QM Intel Core i7-3820QM
4C 8T @ 2.70 GHz
2926 (95%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
3089 (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 i7-3820QM Intel Core i7-3820QM
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 i7-3820QM Intel Core i7-3820QM
4C 8T @ 2.70 GHz
5707 (97%)
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 i7-3820QM Intel Core i7-3820QM
4C 8T @ 2.70 GHz
1644 (97%)
Intel Core i7-3840QM Intel Core i7-3840QM
4C 8T @ 2.80 GHz
1699 (100%)

Devices using this processor

Intel Core i7-3820QM Intel Core i7-3840QM
Unknown Unknown

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