Intel Core i7-840QM

Details and Benchmarks for Intel Intel Core i7-840QM

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 Intel Core i7-840QM based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,167 Rank: 1724
Rank Name Score Visual
1720 Core i3 550 4,168
+0%
1721 Phenom II N850 4,168
+0%
1722 Core 2 Duo E7200 4,168
+0%
1723 A8-6410 4,168
+0%
1724 Intel Core i7-840QM 4,167
1725 A6-3500 4,167
+0%
1726 Core 2 Quad Q6600 4,167
+0%
1727 Pentium E5300 4,166
+-0%
1728 Core M 5Y10a 4,165
+-0%
1729 Celeron 847E 4,165
+-0%

View full ranking →

Multicore Score

Multicore performance score for Intel Core i7-840QM based on multi-threaded benchmark results.

4,178 Rank: 2025
Rank Name Score Visual
2021 Phenom 9850 4,182
+0.1%
2022 Intel Celeron N3000 4,181
+0.1%
2023 Pentium E5200 4,179
+0%
2024 Athlon X2 QL-60 4,179
+0%
2025 Intel Core i7-840QM 4,178
2026 Core 2 Duo T7700 4,173
-0.1%
2027 Core 2 Duo T9550 4,168
-0.2%
2028 Core 2 Duo U9600 4,168
-0.2%
2029 Xeon E3110 4,166
-0.3%
2030 Core 2 Quad Q9400 4,164
-0.3%

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Singlecore Score

Single-core performance score for Intel Core i7-840QM based on single-threaded benchmark results.

4,160 Rank: 1622
Rank Name Score Visual
1618 Core i7-2635QM 4,163
+0.1%
1619 Pentium E5400 4,163
+0.1%
1620 A4-3400 4,162
+0%
1621 Core 2 Duo E8200 4,162
+0%
1622 Intel Core i7-840QM 4,160
1623 Celeron 1000M 4,160
+0%
1624 Core i3-4005U 4,159
+-0%
1625 Core i5-2410M 4,157
-0.1%
1626 Athlon II X4 630 4,157
-0.1%
1627 Phenom II X3 720 4,156
-0.1%

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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 Intel Core i7-840QM based on integer math, floating point math, and prime number computation benchmarks.

-- Rank: --

Number Crunching score not yet available.

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Data Processing

Aggregated score for Intel Core i7-840QM based on data encryption, data compression, and string sorting benchmarks.

-- Rank: --

Data Processing score not yet available.

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Physics & Compute

Aggregated score for Intel Core i7-840QM based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

-- Rank: --

Physics & Compute score not yet available.

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Intel Core i7-840QM Details

With a single-core score of 4160 and a multicore score of 4178, the Intel Core i7-840QM represents a mid-tier mobile processor from Intel's Nehalem architecture era. Released in 2010 as part of the Calpella platform, this chip is now over 15 years old, placing it firmly in the category of legacy hardware. Despite its age, the i7-840QM was notable at the time for combining four cores with hyper-threading, offering strong performance for its era in a 45 nm process node. The processor features a base clock of 1.87 GHz, with a turbo frequency reaching up to 3.2 GHz, and is built on Intel's Clarksfield microarchitecture.

It supports DDR3-1333 memory with a maximum capacity of 8 GB and a dual-channel memory interface, enabling a peak bandwidth of 19.87 GiB/s. The chip includes 8 MiB of L3 cache, 1 MiB of L2 cache, and 0.25 MiB of L1 cache, with a TDP of 45 W, making it suitable for high-performance laptops of its time. It supports a range of Intel technologies including Intel VT-x, VT-d, EPT, and Intel Turbo Boost 1.0, which dynamically increase clock speeds when thermal and power conditions allow. The processor also features Intel Enhanced SpeedStep Technology for power efficiency and includes an integrated memory controller and DMI 1.0 bus at 2.5 GT/s.

However, it lacks integrated graphics, relying on discrete GPUs in the systems it was used in. In benchmark rankings, the i7-840QM holds an overall score of 4167, ranking #1724 out of 2060 processors, with a single-core rank of #1622 and a multicore rank of #2025. This indicates it is outperformed by nearly all modern processors, especially in single-threaded tasks, where it trails behind many current-generation chips by a significant margin. Its multicore performance is closer to that of older dual-core processors, highlighting its obsolescence in today's computing environment.

As of March 2026, the Intel Core i7-840QM is best suited for legacy systems, retro computing projects, or as a reference point for historical hardware analysis, rather than any modern computing needs.
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Intel Intel Core i7-840QM

Main Specifications

Designer: Intel
Name: Intel Core i7-840QM
Family: Core
Model Number: i7-840QM
Cores: 4
Threads: 8
Base Frequency: 1866.66 MHz
Turbo Frequency (1 core): 3199.99 MHz
Turbo Frequency (2 cores): 2933.33 MHz
Turbo Frequency (3 cores): 1999.99 MHz
Turbo Frequency (4 cores): 1999.99 MHz
Clock Multiplier: 14x (locked)
Microarchitecture: Nehalem
Core Name: Clarksfield
Core Family: 6
Core Model: 30
Chipset: Ibex
Target Segment: Mobile
Max CPUs: 1
TDP: 45 W
Release Price: $568.00

Cache Specifications

L1 Cache: 256 KiB
L1 Instruction Cache: 128 KiB (4-way set associative)
L1 Data Cache: 128 KiB (8-way set associative)
L2 Cache: 1 MiB (8-way set associative)
L3 Cache: 8 MiB (16-way set associative)

Memory Specifications

Supported Memory Type: DDR3-1333
Memory Channels: 2
Maximum Memory: 8 GB
Maximum Bandwidth: 19.87 GB/s
ECC Support: No

Physical Specifications

Process: 45 nm
Die Area: 296 mm²
Transistor Count: 0.77 billion
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AES x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT EIST TXT vPro VT-x VT-d EPT TBT 1.0
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