Core i7-3840QM

Details and Benchmarks for Intel Core i7-3840QM

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i7-3840QM based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,962 Rank: 902
Rank Name Score Visual
898 Core i7-7560U 4,970
+0.2%
899 Core i5-6500T 4,967
+0.1%
900 Xeon E3-1275 V2 4,966
+0.1%
901 Core i5-3570K 4,964
+0%
902 Core i7-3840QM 4,962
903 Athlon Gold 7220U 4,962
+0%
904 Xeon D-2123IT 4,960
+-0%
905 Core i7-4700HQ 4,958
-0.1%
906 Core i7-3920XM 4,955
-0.1%
907 Core i5-6267U 4,954
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Core i7-3840QM based on multi-threaded benchmark results.

4,874 Rank: 762
Rank Name Score Visual
758 Xeon E5-1620 v2 4,877
+0.1%
759 Core i5-4690 4,876
+0%
760 Ryzen 5 PRO 3500U 4,875
+0%
761 Core i7-7740X 4,874
+0%
762 Core i7-3840QM 4,874
763 Core i7-1185GRE 4,874
+0%
764 Ryzen 7 3750H 4,871
-0.1%
765 Xeon E5-2643 v2 4,871
-0.1%
766 Ryzen 3 5300U 4,871
-0.1%
767 Ryzen 3 PRO 1300 4,870
-0.1%

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Singlecore Score

Single-core performance score for Core i7-3840QM based on single-threaded benchmark results.

5,021 Rank: 931
Rank Name Score Visual
927 Core i7-4800MQ 5,027
+0.1%
928 Core i3-9100TE 5,026
+0.1%
929 Core i5-3470 5,023
+0%
930 Core i3-4130 5,023
+0%
931 Core i7-3840QM 5,021
932 Core i7-4750HQ 5,018
-0.1%
933 Xeon E5-2670 v3 5,016
-0.1%
934 Xeon D-1548 5,013
-0.2%
935 Core i5-4440 5,012
-0.2%
936 Xeon Silver 4110 5,009
-0.2%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i7-3840QM based on integer math, floating point math, and prime number computation benchmarks.

4,656 Rank: 804
Rank Name Score Visual
800 Core i5-4670 4,657
+0%
801 Xeon W-2102 4,656
+0%
802 Core i7-8565U 4,656
+0%
803 Core i7-3920XM 4,656
+0%
804 Core i7-3840QM 4,656
805 Core i7-4722HQ 4,656
+0%
806 Core i5-10210U 4,655
+-0%
807 Ryzen 3 1200 4,655
+-0%
808 Core i5-8350U 4,654
+-0%
809 Core i7-4770T 4,654
+-0%

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Data Processing

Aggregated score for Core i7-3840QM based on data encryption, data compression, and string sorting benchmarks.

4,659 Rank: 769
Rank Name Score Visual
765 Core i7-6820HQ 4,661
+0%
766 Core i7-2600K 4,661
+0%
767 Core i7-4790T 4,660
+0%
768 Core i5-7640X 4,659
+0%
769 Core i7-3840QM 4,659
770 Xeon E-2314 4,659
+0%
771 Core i5-1035G1 4,658
+-0%
772 Xeon E3-1240L v5 4,658
+-0%
773 Xeon E3-1270 4,658
+-0%
774 Xeon E-2224 4,657
+-0%

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Physics & Compute

Aggregated score for Core i7-3840QM based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,650 Rank: 844
Rank Name Score Visual
840 Ryzen 3 PRO 1300 4,652
+0%
841 Pentium Gold G7400T 4,652
+0%
842 Xeon E3-1505L v5 4,651
+0%
843 Xeon W3680 4,650
+0%
844 Core i7-3840QM 4,650
845 Core i7-4712HQ 4,649
+-0%
846 Ryzen Embedded V1807B 4,648
+-0%
847 Ryzen 5 1400 4,648
+-0%
848 Core i7-4700MQ 4,648
+-0%
849 Core i5-6400T 4,647
-0.1%

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Core i7-3840QM Details

Ranking #902 of 2060 in overall performance, the Intel Core i7-3840QM represents a capable mobile processor from the Ivy Bridge generation, launched in September 2012. While it is now over a decade old, its performance still holds up in certain contexts, particularly for general productivity and light multimedia tasks. As of March 2026, it stands as a legacy part in the broader CPU landscape, offering a glimpse into the evolution of mobile computing performance. Its 45 W TDP and 22 nm process node reflect the design priorities of its era—balancing power efficiency with performance in laptops and mobile workstations.

The Core i7-3840QM is built on Intel's Ivy Bridge microarchitecture and features four cores with Hyper-Threading, enabling eight simultaneous threads. It operates at a base frequency of 2.8 GHz and can boost up to 3.8 GHz under favorable workloads. This processor supports dual-channel DDR3 memory up to 1600 MHz, with a maximum capacity of 32 GB and a peak bandwidth of 25.6 GB/s. The chip integrates 8 MB of L3 cache, 0.244 MiB of L2 cache, and 0.061 MiB of L1 cache, providing a robust memory hierarchy for its time. It uses the FCPGA988 socket and is packaged in a BGA12F configuration, which limits upgradeability but enables compact laptop designs.

The integrated Intel HD Graphics 4000 GPU plays a significant role in this processor’s appeal, offering a base frequency of 650 MHz and a burst frequency of 1300 MHz. It supports up to three displays and is capable of handling basic gaming and video playback. However, it lacks modern features like DirectX 12 support, limiting its use in contemporary applications. The GPU's 2 GB maximum memory allocation is shared from system RAM, which can impact performance when running memory-intensive tasks.

The Core i7-3840QM supports a wide array of instruction sets, including AVX, AVX2, AES-NI, and Intel VT-x with EPT, making it suitable for virtualization and encryption-heavy workloads. It also includes technologies like Enhanced SpeedStep and Intel vPro, enhancing power efficiency and manageability in enterprise environments. Despite its age, the processor remains a reliable option for users who prioritize legacy system compatibility or need a stable platform for older software.

In benchmark testing, the Core i7-3840QM achieves a single-core score of 5021, placing it at #931 among 2060 processors, and a multicore score of 4874, ranking #761. These results indicate that while it remains competitive in single-threaded applications, its multicore performance is less impressive compared to modern processors. Its overall score of 4962 reflects a balanced but dated performance profile. When compared to contemporaries like the Core i5-4690 or Ryzen 5 PRO 3500U, it holds its own in some areas but falls behind in raw throughput.

Given its age and performance ceiling, the Core i7-3840QM is best suited for users who need a dependable mobile CPU for basic office tasks, web browsing, and light multimedia use. It is no longer suitable for demanding applications such as video editing, 3D rendering, or modern gaming. However, for those maintaining older laptops or prioritizing cost-effective upgrades, it remains a functional option. In today’s market, it serves more as a historical benchmark than a practical choice for new systems.
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Intel Core i7-3840QM

Main Specifications

Designer: Intel
Name: Core i7-3840QM
Model Number: i7-3840QM
Cores: 4
Threads: 8
Base Frequency: 2800 MHz
Clock Multiplier: 28x (locked)
Core Name: Ivy Bridge
Socket: FCPGA988
Package: FC-BGA12F
Target Segment: Mobile
Max CPUs: 1
TDP: 45 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.244 MiB
L3 Cache: 7.629 MiB

Memory Specifications

Supported Memory Type: DDR3/L/-RS 1333/1600
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 25.6 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8 2x4

Integrated Graphics

GPU: HD Graphics 4000
GPU Designer: Intel
GPU Max Frequency: 1300 MHz

Physical Specifications

Process: 22 nm
Die Area: 160 mm²
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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