Intel Core i7-820QM

Details and Benchmarks for Intel Intel Core i7-820QM

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 i7-820QM based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

3,900 Rank: 1961
Rank Name Score Visual
1957 Athlon 64 X2 3600+ 3,912
+0.3%
1958 Intel Pentium J3710 3,908
+0.2%
1959 Athlon LE-1640 3,906
+0.2%
1960 Atom x7-Z8700 3,901
+0%
1961 Intel Core i7-820QM 3,900
1962 A8-4555M 3,897
-0.1%
1963 Athlon II X2 260u 3,897
-0.1%
1964 Athlon X2 4850e 3,897
-0.1%
1965 Celeron N3160 3,895
-0.1%
1966 Atom x5-Z8350 3,894
-0.2%

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Multicore Score

Multicore performance score for Intel Core i7-820QM based on multi-threaded benchmark results.

4,035 Rank: 2053
Rank Name Score Visual
2049 Core 2 Quad Q6600 4,094
+1.5%
2050 A4-4300M 4,086
+1.3%
2051 Core 2 Duo E4500 4,062
+0.7%
2052 Intel Core i7-640UM 4,050
+0.4%
2053 Intel Core i7-820QM 4,035
2054 Athlon 64 X2 5200+ 4,029
-0.1%
2055 Athlon 64 X2 5000+ 4,017
-0.4%
2056 Core 2 Duo T9500 4,015
-0.5%
2057 Core 2 Duo E7400 4,011
-0.6%
2058 Celeron 857 3,978
-1.4%

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Singlecore Score

Single-core performance score for Intel Core i7-820QM based on single-threaded benchmark results.

3,810 Rank: 1879
Rank Name Score Visual
1875 Phenom X3 8750 3,817
+0.2%
1876 Turion II Neo N40L 3,816
+0.2%
1877 Pentium 987 3,814
+0.1%
1878 Core i3-2375M 3,814
+0.1%
1879 Intel Core i7-820QM 3,810
1880 Athlon II M320 3,810
+0%
1881 Phenom X4 9600B 3,810
+0%
1882 A6-3400M 3,809
+-0%
1883 A6-4455M 3,809
+-0%
1884 Core i3-2377M 3,807
-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 i7-820QM 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 i7-820QM 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 i7-820QM based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

-- Rank: --

Physics & Compute score not yet available.

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Intel Core i7-820QM Details

As of March 2026, the Intel Core i7-820QM stands as a relic of early 2010s mobile computing, offering performance that now places it well below modern standards. With a multicore score of 4035, it ranks #2053 out of 2060 processors, indicating that it lags significantly behind contemporary CPUs. Its single-core performance, at 3810, places it at #1879, while its overall score of 3900 positions it at #1961, trailing behind nearly all current desktop and mobile processors. The processor’s performance is notably weaker compared to the top-tier chips of today, such as the Ryzen Threadripper PRO 9995WX or Core Ultra 9 285K, which achieve scores over 8,000 and 8,500 respectively. This stark contrast underscores the rapid advancement in CPU design over the past decade.

Built on Intel’s Nehalem microarchitecture and fabricated on a 45 nm process, the Core i7-820QM is designed for mobile platforms, specifically within the Calpella platform and using the Ibex Peak chipset. It features four cores and eight threads, enabled by Hyper-Threading technology, and includes a 65 W TDP, which is relatively high for a mobile processor of its time. The chip operates at a base frequency of 1.73 GHz, with a turbo frequency reaching 3.07 GHz under single-core load, though it scales down to 1.87 GHz when all four cores are active. It supports DDR3-1333 memory with a maximum capacity of 8 GB across two channels, achieving a peak memory bandwidth of 19.87 GB/s.

Cache hierarchy includes 0.125 MiB of L1 data and instruction cache per core, 1 MiB of L2 cache shared across two cores, and a substantial 8 MiB L3 cache shared among all four cores. The processor integrates Intel’s Enhanced SpeedStep and Turbo Boost 1.0 technologies, allowing for dynamic frequency adjustments based on workload and power constraints. It also supports features such as Intel VT-x, VT-d, and Intel TXT, making it suitable for virtualization and secure computing environments. However, it lacks ECC memory support, which limits its use in enterprise-grade workstations.

Despite its age, the Core i7-820QM was once a high-end mobile processor, competing with AMD’s Athlon 64 X2 and Intel’s own Core 2 Duo series. It outperforms some of its contemporaries like the Core 2 Duo T9500 and the Athlon 64 X2 5200+, but it falls behind more advanced processors such as the Core i3-2375M and the Turion II Neo N40L in single-core performance. Its multicore advantage over some dual-core chips is notable, but the performance gap widens dramatically against modern multi-core and multi-threaded CPUs.

In conclusion, the Intel Core i7-820QM is best suited for legacy systems or basic computing tasks where modern performance is not required. While it was once a powerful mobile processor, its capabilities are now obsolete in the face of current advancements in CPU architecture, process technology, and multi-core scalability. For users seeking modern performance, this processor serves more as a historical benchmark than a practical choice for contemporary computing needs.
Frequently Compared

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Intel Intel Core i7-820QM

Main Specifications

Designer: Intel
Name: Intel Core i7-820QM
Family: Core
Model Number: i7-820QM
Cores: 4
Threads: 8
Base Frequency: 1733.33 MHz
Turbo Frequency (1 core): 3066.66 MHz
Turbo Frequency (2 cores): 2799.99 MHz
Turbo Frequency (3 cores): 1866.66 MHz
Turbo Frequency (4 cores): 1866.66 MHz
Clock Multiplier: 13x (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: $546.00

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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