Core i7-3820

Details and Benchmarks for Intel Core i7-3820

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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 i7-3820 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,889 Rank: 964
Rank Name Score Visual
960 Xeon W3690 4,892
+0.1%
961 Xeon E5-2650 v2 4,891
+0%
962 Core i5-5287U 4,890
+0%
963 Pentium Gold G5400T 4,889
+0%
964 Core i7-3820 4,889
965 Athlon PRO 200GE 4,887
+-0%
966 Core i3-7167U 4,887
+-0%
967 Core i5-3470 4,886
-0.1%
968 Core i5-4440 4,882
-0.1%
969 Core i5-7Y57 4,881
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Core i7-3820 based on multi-threaded benchmark results.

4,832 Rank: 805
Rank Name Score Visual
801 Ryzen 3 2200G 4,840
+0.2%
802 Core i5-10300H 4,838
+0.1%
803 Ryzen 5 2400G 4,837
+0.1%
804 Xeon E3-1230 V5 4,832
+0%
805 Core i7-3820 4,832
806 Ryzen 3 1200 4,832
+0%
807 Core i5-8300H 4,830
+-0%
808 Core i7-4980HQ 4,830
+-0%
809 Xeon Silver 4112 4,829
-0.1%
810 Xeon E3-1505M v5 4,828
-0.1%

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Singlecore Score

Single-core performance score for Core i7-3820 based on single-threaded benchmark results.

4,927 Rank: 990
Rank Name Score Visual
986 Core i7-3770S 4,934
+0.1%
987 Ryzen Threadripper 3990X 4,933
+0.1%
988 Core i7-8665U 4,932
+0.1%
989 Ryzen 5 2500U 4,931
+0.1%
990 Core i7-3820 4,927
991 Core i7-3720QM 4,926
+-0%
992 Xeon E5-2650 v4 4,923
-0.1%
993 Pentium G3450 4,922
-0.1%
994 Core i5-3360M 4,921
-0.1%
995 Pentium Gold G6405 4,920
-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 Core i7-3820 based on integer math, floating point math, and prime number computation benchmarks.

4,647 Rank: 839
Rank Name Score Visual
835 Core i7-4720HQ 4,648
+0%
836 Core i7-3820QM 4,648
+0%
837 Xeon D-1521 4,647
+0%
838 Ryzen 3 2200G 4,647
+0%
839 Core i7-3820 4,647
840 Core i5-4570 4,646
+-0%
841 Core i5-8265U 4,646
+-0%
842 Xeon E3-1220 V2 4,646
+-0%
843 Xeon D-1520 4,645
+-0%
844 Core i5-7600T 4,645
+-0%

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Data Processing

Aggregated score for Core i7-3820 based on data encryption, data compression, and string sorting benchmarks.

4,673 Rank: 745
Rank Name Score Visual
741 Core i7-3770S 4,675
+0%
742 Xeon E3-1230 V2 4,675
+0%
743 Ryzen 3 4300U 4,674
+0%
744 Core i7-7700HQ 4,673
+0%
745 Core i7-3820 4,673
746 Xeon E5-2623 v4 4,672
+-0%
747 Xeon E-2224G 4,672
+-0%
748 Ryzen 3 PRO 1300 4,672
+-0%
749 Core i7-2700K 4,672
+-0%
750 Xeon X5650 4,672
+-0%

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Physics & Compute

Aggregated score for Core i7-3820 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,676 Rank: 783
Rank Name Score Visual
779 Core i5-7300HQ 4,678
+0%
780 Ryzen 3 2300X 4,678
+0%
781 Ryzen 3 7320U 4,678
+0%
782 Core i5-4590S 4,676
+0%
783 Core i7-3820 4,676
784 Core i7-4722HQ 4,676
+0%
785 Ryzen 5 PRO 3400G 4,675
+-0%
786 Xeon D-1622 4,675
+-0%
787 Core i7-8665U 4,675
+-0%
788 Core i5-4570 4,674
+-0%

View full ranking →

Core i7-3820 Details

Ranking #963 of 2060 in overall performance, the Intel Core i7-3820 sits in the mid-tier of desktop processors as of early 2026. Though no longer cutting-edge, it remains a capable quad-core part with hyper-threading, making it relevant for legacy workloads and systems where power efficiency is less critical. Released over a decade ago, the i7-3820 is built on Intel’s 32 nm process and features the Sandy Bridge-E architecture, designed for high-end desktops and workstations of its time. Its FCLGA1366 socket and 130 W TDP reflect the power-hungry nature of early 2010s high-performance CPUs, limiting its appeal in modern energy-conscious builds.

The processor operates at a base frequency of 3.6 GHz and can boost to 3.8 GHz, with support for up to 64 GB of DDR3 memory across four channels, achieving a maximum memory bandwidth of 51.2 GB/s. It supports PCIe 2.0 with up to 40 lanes, offering flexibility for multi-GPU and storage configurations. The i7-3820 includes Intel’s integrated HD Graphics P4000, which runs at a base frequency of 650 MHz and can reach 1.25 GHz in burst mode, supporting up to three displays. While not suitable for gaming, it provides basic visual output for office and multimedia tasks.

In terms of performance, the Core i7-3820 scores 4889 in the overall Passmark benchmark, with a single-core score of 4927 and a multicore score of 4832. These figures place it behind modern CPUs but ahead of several contemporary low-power and mobile processors. Its single-core performance ranks higher than its multicore score, indicating stronger per-thread efficiency, which makes it better suited for applications that rely on thread optimization rather than raw parallel processing. The processor is outperformed by both current-generation Intel and AMD parts, with even budget chips like the Ryzen 5 2400G scoring slightly higher in multicore tests.

The i7-3820 supports a wide array of Intel technologies, including AES-NI, AVX2, Hyper-Threading, and Intel vPro, making it suitable for enterprise environments requiring remote management and virtualization. It also supports ECC memory, though this feature is limited to server-grade systems. Despite its age, the CPU’s robust feature set and strong single-thread performance ensure it still holds value in niche scenarios such as legacy software compatibility, small-scale server deployments, or budget builds where cost is a primary concern.

As of March 2026, the Core i7-3820 is best suited for users who prioritize stability and compatibility over modern efficiency and performance. It remains a viable option for non-demanding workstations, retro gaming rigs, or systems where upgrading the motherboard and CPU is not feasible. However, for new builds, alternatives from AMD or Intel’s more recent generations offer significantly better performance, power efficiency, and feature integration.
Frequently Compared

Intel Core i9-7900X 9 views

AMD Ryzen Threadripper 1900X 4 views

AMD Ryzen 9 PRO 3900 3 views

AMD Ryzen 5 PRO 3500U 3 views

AMD Ryzen Threadripper 2990WX 3 views

AMD Ryzen Threadripper 2920X 3 views

AMD Ryzen 3 PRO 2200GE 2 views

Intel Xeon Silver 4214 2 views

Intel Xeon Silver 4114 2 views

Intel Xeon Silver 4112 2 views

Intel Core i7-3820

Main Specifications

Designer: Intel
Name: Core i7-3820
Model Number: i7-3820
Cores: 4
Threads: 8
Base Frequency: 3600 MHz
Socket: FCLGA1366
Max CPUs: 1
TDP: 130 W

Cache Specifications

Memory Specifications

Supported Memory Type: DDR3 1066/1333/1600
Memory Channels: 4
Maximum Memory: 0 GB
Maximum Bandwidth: 51.2 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 40
PCIe Configuration: 1x16 & 1x4, 2x8 & 1x4 or 1x8 & 3x4

Integrated Graphics

GPU: HD Graphics P4000
GPU Designer: Intel
GPU Max Frequency: 1250 MHz

Physical Specifications

Process: 32 nm
Word Size: 64-bit

CPU Features

SSE4.1 SSE4.2 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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