Used Intel Cpu I7 3820

Updated July 3, 2026

Overview

Product sourcing insights & recommendations

20 来源

The Intel Core i7-3820 is a legacy high-end desktop (HEDT) processor from the Sandy Bridge-E generation Techpowerup. Originally released in 2012, it has shifted from a premium enthusiast chip to a low-cost entry point for hobbyists interested in the LGA 2011 (X79) platform Youtube Cpubenchmark.

Product Overview

* Core Specs: 4 Cores, 8 Threads, with a 3.6 GHz base clock and 3.8 GHz turbo boost Intel.

* Platform: Uses the LGA 2011 socket and X79 chipset. It supports quad-channel DDR3 memory and up to 40 PCIe lanes, which was its main advantage over mainstream chips like the i7-2600K Amazon Techpowerup.

* Performance: While it can still handle basic office tasks and older games, its PassMark score of ~5,790 is very low by modern standards Cpubenchmark. It often bottlenecks modern mid-range GPUs and is roughly 10x slower than current flagship CPUs.

Market Trends & Insights

* Current Price: Used units typically retail for $10–$25 on secondary markets like eBay or AliExpress Ebay Youtube.

* The "Motherboard Tax": Although the CPU is cheap, X79 motherboards remain relatively expensive ($60–$120+) because they are rare Directmacro. This creates a high "platform cost" that makes the i7-3820 a poor choice for new budget builds compared to newer platforms like AM4 (Ryzen).

* Consumer Shift: Most enthusiasts have moved away from the i7-3820 in favor of Xeon E5 processors (like the E5-1650 or E5-2667 v2), which fit the same socket but offer more cores and larger caches for similar prices.

* B2B Sourcing: In the wholesale market, this model is classified as "End-of-life" (EOL) or "Legacy" hardware. It is primarily traded by specialized suppliers who focus on industrial POS systems, medical equipment maintenance, or vintage PC restoration.

Key Takeaway

The i7-3820 is an "e-waste gem"—extremely cheap for the raw silicon, but economically impractical to build around unless you already own a compatible X79 motherboard. Youtube

Based on the legacy status of the i7-3820, here are some ways to move forward:

Sources & References

20 sources cited · Verified industry data & reports

Intel® Core™ i7-3820 Processor

Intel

Total Cores 4 Total Threads 8 Max Turbo Frequency 3.80 GHz. Launch Date Q1'12. Tuesday, December 31, 2019

Intel Core i7-3820 Specs - CPU Database

TechPowerUp

Release Date: Feb 13th, 2012. Launch Price: $305. Part#:, SR0LD. Performance. Frequency: 3.6 GHz. Turbo Clock: up to 3.8 GHz. Base Clock: 100 MHz. Multiplier: ...

Intel Core i7-3820 Processor 3.6 4 LGA 2011 ...

Amazon.com

3.6Ghz · 32nm · Integrated Four Channel DDR3 Memory Controller · Hyper-Threading Technology · 10MB Smart Cache · Turbo Boost 2.0 Technology · LGA-2011 Package.

Intel Core i7-3820 - CPU UserBenchmarks

CPU UserBenchmarks

8 Threads @3.6 GHz, Release date ≤ Q4 2013. Average Bench: 69.5% (466 th of 1427) 8 Cache 10 MB SmartCache

Intel Core i7-3820 - CM8061901049606 / BX80619I73820

CPU-World

Core i7-3820 will be released in February, and it will be priced at $294 in 1K tray quantities. This CPU is now available for pre-order in Provantage online ...

Intel® Core™ i7-3820 Processor Review (10M Cache, 3.60 ...

techwarelabs.com

Intel Core i7 3820, cache specifications, and motherboard model. Launched Launch Date Q1'12 8 Clock Speed 3.6 GHz Max Turbo Frequency 3.8 GHz