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AMD A8-3820

4
Cores
4
Threads
65 W
TDP
2.5 GHz
Frequency
2.8 GHz
Boost
Llano
Codename
Socket FM1
Socket
Front
Front
Connectivity
Connectivity
AMD Socket FM1
AMD Socket FM1
The AMD A8-3820 was a desktop processor with 4 cores, launched in December 2011. It is part of the A8 lineup, using the Llano architecture with Socket FM1. A8-3820 has 1 MB of L2 cache per core and operates at 2.5 GHz by default, but can boost up to 2.8 GHz, depending on the workload. AMD is making the A8-3820 on a 32 nm production node using 1,178 million transistors. The silicon die of the chip is not fabricated at AMD, but at the foundry of GlobalFoundries. The multiplier is locked on A8-3820, which limits its overclocking potential.
With a TDP of 65 W, the A8-3820 consumes typical power levels for a modern PC. AMD's processor supports DDR3 memory with a dual-channel interface. The highest officially supported memory speed is 1866 MT/s, but with overclocking (and the right memory modules) you can go even higher. For communication with other components in the system, A8-3820 uses a PCI-Express Gen 2 connection. This processor features the Radeon HD 6550D integrated graphics solution.
Hardware virtualization is available on the A8-3820, which greatly improves virtual machine performance.

Physical

Socket: AMD Socket FM1
Foundry: GlobalFoundries
Process Size: 32 nm
Transistors: 1,178 million
Die Size: 228 mm²
Package: µPGA

Processor

Market: Desktop
Production Status: End-of-life
Release Date: Dec 20th, 2011
Part#: AD3820OJZ43GX
AD3820OJGXBOX

Performance

Frequency: 2.5 GHz
Turbo Clock: up to 2.8 GHz
Base Clock: 100 MHz
Multiplier: 25.0x
Multiplier Unlocked: No
Voltage: 1.4125 V
TDP: 65 W

Architecture

Codename: Llano
Generation: A8
(Llano)
Memory Support: DDR3
Rated Speed: 1866 MT/s
Memory Bus: Dual-channel
ECC Memory: No
PCI-Express: Gen 2
Chipsets: A75, A55

Core Config

# of Cores: 4
# of Threads: 4
SMP # CPUs: 1
Integrated Graphics: Radeon HD 6550D

Cache

Cache L1: 128 KB (per core)
Cache L2: 1 MB (per core)

Features

  • MMX
  • 3DNow!
  • SSE
  • SSE2
  • SSE3
  • SSE4A
  • AMD64
  • CnQ
  • NX bit
  • AMD-V
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