CPUDesktopReleased Feb 13, 2012

Intel Core i7-3820 Processor

4C/8T · 3.8 GHz · 130 W

The most affordable way into Intel's enthusiast LGA 2011 platform, released in early 2012. It gives up the six cores of the Core i7-3930K and 3960X above it but keeps what makes the X79 platform attractive: a quad-channel memory controller and the full complement of PCI Express lanes for multi-GPU and workstation builds. Its multiplier is only partially unlocked, so overclocking leans mainly on the base-clock straps.

General

Manufacturer: Intel
Model: Intel Core i7-3820 Processor
Segment: Desktop
Generation: 2nd Gen Core
Codename: Sandy Bridge-E
Architecture: x86_64
Microarchitecture: Sandy Bridge-E
Release date: Feb 13, 2012
Price: Search on Amazon

Cores & clocks

Cores / threads: 4 cores / 8 threads
Base clock: 3.60 GHz
Boost clock: 3.80 GHz
TDP (design W): 130 W
Unlocked: ✕ No
L2 cache: 1 MB
L3 cache: 10 MB
Technology (nm): 32 nm
32 nm

Platform

Socket: FCLGA2011
2-CPU (multi-socket): ✕ No
Integrated GPU: None
Memory type: DDR3-1066/1333/1600
4-channel
Memory size: Up to 64 GB
ECC memory: ✕ No
PCIe: PCIe 2.0 (40 lanes)

Instructions & AI

Instruction extensions: x86-64SSE4.2AVXAES-NIVT-x
NPU: None

OS support

Windows: Windows 10
Linux: UbuntuFedoraArch Linux
Notes: Sandy Bridge-E does not appear on any Windows 11 supported-processor list, so Windows 10 is the newest officially supported Windows release. Microsoft has not published a separate processor list for Windows 11 26H2, so the 25H2 result is carried over. Current Ubuntu, Fedora and Arch releases still run: the core provides SSE4.2, POPCNT and AVX, meeting the x86-64-v2 baseline. ChromeOS Flex does not cover hardware of this era.

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