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AMD A8-Series A8-3820 - AD3820OJZ43GX / AD3820OJGXBOX

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AMD A8-3820 specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD A8-Series
Model number  ? A8-3820
CPU part numbers
  • AD3820OJZ43GX is an OEM/tray microprocessor
  • AD3820OJGXBOX is a boxed microprocessor
Frequency  ? 2500 MHz
Turbo frequency2800 MHz
Package905-pin organic lidded micro Pin Grid Array (UOF905)
SocketSocket FM1
Size1.57" x 1.57" / 4cm x 4cm
Weight1.4oz / 39g
Introduction dateDec 20, 2011 (announcement)
January 2012 (availability)
Price at introduction$129
Architecture / Microarchitecture
Processor core  ? Llano
Core stepping  ? LN-B0
Manufacturing process0.032 micron
1178 million transistors
Die size227mm2
Data width64 bit
The number of cores4
The number of threads4
Floating Point UnitIntegrated
Level 1 cache size  ? 4 x 64 KB 2-way associative instruction caches
4 x 64 KB 2-way associative data caches
Level 2 cache size  ? 4 x 1 MB 16-way associative cache
Level 3 cache sizeNone
  • MMX instructions
  • 3DNow! technology
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSE4a  ? 
  • AMD64 / AMD 64-bit technology  ? 
  • AMD-V / AMD Virtualization technology
  • EVP / Enhanced Virus Protection  ? 
  • Turbo Core technology
Low power featuresPowerNow!
Integrated peripherals / components
Integrated graphics
  • GPU Type: Radeon HD 6550D
    Shader cores: 400
    Base frequency (MHz): 600
Memory controller
  • The number of controllers: 1
    Memory channels: 2
    Supported memory: DDR3-1866
    Maximum memory bandwidth (GB/s): 29.9
Other peripherals
  • PCI Express 2.0
  • Unified Video Decoder 3.0
Electrical / Thermal parameters
V core  ? 0.45V - 1.4125V
Maximum operating temperature  ? 70.5°C
Thermal Design Power  ? 65 Watt

Popular A8-3820 comparisons:

Detailed side-by-side comparison

For detailed comparision of the AMD A8-3820 and any other other chip from our CPU database type in a chip name and/or its partial specs:

You can specify any of the following: manufacturer name, family name, model number, part number, core name, socket name, operating frequency, bus speed, and the last level cache. Here are examples of searches: A8-3820, AD3820OJZ43GX, AMD A8-Series 2.5GHz, Llano Socket FM1

Historical price chart

The chart below shows official prices of AMD A8-Series A8-3800, A8-3820 and A8-3850 processors:

Historical official prices of A8-Series A8-3800, A8-3820 and A8-3850 processors


Q: Can I upgrade my AMD A8-3820 CPU?
A: Probably yes. Processor compatibility is determined by your motherboard. Please check resource for CPU support list for your board.

A8-3820 Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

AMD cuts prices of desktop CPUs
May 01, 2013: Earlier this week AMD announced new processors, expanding the line of high-end FX CPUs with quad-core FX-4350 and six-core FX-6350. It's not uncommon for AMD to lower prices when launching new products, and this time it was not an exception. Based on the latest official AMD price list, the company cut prices of ten A-Series and FX-Series chips by as much as 19%.

AMD cuts prices on A-Series APUs and FX CPUs
Apr 27, 2012: A few days after announcement of Intel's Ivy Bridge micro-architecture, many news sites reported that some European retailers slashed prices of FX-8150 processors by 15% - 20%, and suggested that AMD may have dropped the prices of other processors as well. Today AMD published new pricelist, confirming price drop for the FX-8150 model. The company also cut prices of six- and quad-core FX-Series chips, and for all microprocessors from A-Series.

AMD cuts prices of Phenom II and FX CPUs
Feb 28, 2012: As you may know, AMD yesterday launched two FX microprocessors, including company's first production CPU, operating faster than 4 GHz. New product releases are usually accompanied by price drops of older models, and it wasn't an exception this time. AMD cut prices on two FX-Series models, and reduced prices for most of Phenom IIs. They also added pricing for A-Series A6-3620 and A8-3820 Accelerated Processing units (APUs).

Bits and pieces: new 65W APUs spotted in HP PCs
Jan 10, 2012: On December 20 AMD announced five new socket FM1 desktop Accelerated Processing Units (APUs), including two unlocked A6-3670K and A8-3870K models with 100 Watt Thermal Design Power, and A4-3420, A6-3620 and A8-3820 SKUs with 65 Watt TDP. Unlocked CPUs were released about a week later, while three 65 Watt chips are still not available anywhere, even for pre-order. The processors did emerge in specifications of several Hewlett Packard PCs, which confirms our suspicion that the 3420, 3620 and 3820 APUs may be shipped only as OEM parts.

A6-3670K and A8-3870K surfaced in AMD product database
Dec 20, 2011: Last Friday Turkish site Donanimhaber published a few slides, one of which revealed release date and official prices of A6-3670K and A8-3870K Accelerated Processing Units (APUs). Two processors will be launched on December 26, priced at $115 for A6 model, and $135 for A8 model. AMD today added specifications of these processors to their product database, thus confirming imminent release of both CPUs.

Release date and prices of A6-3670K and A8-3870K CPUs
Dec 16, 2011: On December 5, we published preliminary details of AMDs Llano A6-3670K, A8-3820 and A8-3870K APUs. Turkish site Donanimhaber have now published the release dates and initial pricing for A8-3870K and A6-3670K, as well as revealing more information about the A8-3820.

Compare AMD A8-3820 benchmark results with all tested CPUs from one of the following families:

To compare this A8-Series CPU with any tested processor please proceed to

For additional benchmarks, comparing multi-threaded performance of this microprocessor with other A8-Series CPUs and the fastest AMD and Intel x86 chips, please visit AMD A8-3820 benchmarks page.

AMD A8-3820 Benchmarks

The graphs below show up to 10 microprocessors with approximately the same level of integer (CPU), floating-point (FPU), SIMD and memory performance. All processors were not overclocked, and were tested at a nominal frequency, with a stock heatsink and default BIOS settings. Click on the '?' mark next to each model name to see specifications of that model, and details of the test platform. To find out how the A8-3820 compares to other CPUs in specific benchmarks or in aggregate milti-threading performance please see benchmark tools section on the right.

Benchmarked processor

CPU ID:300F10
CPU vendor string:AuthenticAMD
CPU name string:AMD A8-3820 APU with Radeon(tm) HD Graphics

Integer performance

Part number   Result
AMD Athlon II X4 638  ? 
AMD Phenom II X4 650T  ? 
AMD Athlon II X4 631  ? 
AMD A6-3650  ? 
AMD FX-4170  ? 
AMD A8-3820  ? 
AMD Athlon II X4 2.6 GHz ZD260121K4216  ? 
AMD Phenom II X4 910e  ? 
AMD Phenom II X4 910  ? 
AMD Athlon II X4 620  ? 
AMD Phenom II X4 810  ? 

Floating Point performance

Part number   Result
AMD Phenom II X4 910  ? 
AMD Athlon II X4 620e  ? 
AMD Phenom II X4 910e  ? 
AMD Athlon II X4 2.6 GHz ZD260121K4216  ? 
AMD Athlon II X4 620  ? 
AMD A8-3820  ? 
Intel Core i5-2500T  ? 
Intel Core i5-650  ? 
AMD FX-6120  ? 
AMD Athlon II X3 460  ? 
AMD Phenom II X4 805  ? 

MMX / SSE / SSE2 performance

Part number   Result
AMD Athlon X4 750K  ? 
AMD A10-5700  ? 
AMD Athlon II X3 460  ? 
Intel Core 2 Quad Q8200  ? 
AMD FX-4100  ? 
AMD A8-3820  ? 
AMD Athlon II X4 631  ? 
AMD A6-3650  ? 
Intel Core 2 Quad Q6600  ? 
AMD Athlon II X3 455  ? 
AMD Phenom II X4 910e  ? 

Memory-intensive program performance

Part number   Result
AMD A6-3670K  ? 
AMD Athlon II X4 638  ? 
AMD Phenom II X3 705e  ? 
AMD Athlon X4 730  ? 
AMD Athlon II X4 631  ? 
AMD A8-3820  ? 
AMD A6-3650  ? 
AMD Phenom II X3 700e  ? 
AMD A8-3800  ? 
Intel Core 2 Quad Q6600  ? 
AMD Phenom II X4 840  ? 

CPU ID information for the A8-3820

Our CPUID database contains 2 records for this microprocessor. See all submitted records.

Use our CPU identification tool to check features of your CPU.

NOTE: The CPU ID information below was taken from one CPU and may include features that are not present in all different steppings of the AMD A8-Series A8-3820 CPU.

CPU Family:A8-Series
Model Number:A8-3820
Frequency:2500 MHz
Part number:
Stepping Code:DA 1151PGT
Comment:very good UV 0,9V@800Mhz +0,5V every P-State and 0,9/1,0V Nbridge
Submitted by:vinibali
General information
Processor name (BIOS):AMD A8-3820 APU with Radeon(tm) HD Graphics
Logical processors:4
Processor type:Original OEM Processor
Core stepping:LN-B0
CPUID signature:300F10
Family:18 (012h)
Model: 1 (01h)
Stepping: 0 (00h)

Cache: L1 data L1 instruction L2
Size: 4 x 64 KB 4 x 64 KB 4 x 1 MB
Associativity: 2-way set
2-way set
16-way set
Line size: 64 bytes 64 bytes 64 bytes
Lines per tag: 1 1 1
Instruction set extensionsAdditional instructions
MMX Advanced Bit manipulation
AMD extensions to MMX CLFLUSH
Extensions to 3DNow! CMPXCHG16B
  SKINIT/STGI support
Major featuresOther features
On-chip Floating Point Unit 1 GB large page support
64-bit / Intel 64 100MHz multiplier control
NX bit/XD-bit 128-bit SSE instructions
Secure Virtual Machine (Virtualization) 36-bit page-size extensions
Turbo Core Advanced programmable interrupt controller
PowerNow! / Cool'n'Quiet Core multi-processing legacy mode
  Debugging extensions
  Extended APIC space
  FXSAVE/FXRSTOR optimizations
  Hardware P-state control
  Hardware thermal control
  Instruction based sampling
  LAHF/SAHF support in 64-bit mode
  LBR virtualization
  LOCK MOV CR0 means MOV CR8
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Misaligned SSE mode
  Model-specific registers
  Nested page tables
  OS visible workaround
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Physical address extensions
  SVM lock
  Software thermal control
  Support for NRIP save
  TSC rate is ensured to be invariant across all states
  Temperature sensor
  Time stamp counter
  Virtual 8086-mode enhancements
  Watchdog timer support

CPUs, related to AMD A8-3820

Model Cores /
Frequency Turbo
TDP Features Price  
AMD A8-Series family, Socket FM1
   A8-38004 / 42.4 GHz2.7 GHz4 MB65WTBT$91>
   A8-38204 / 42.5 GHz2.8 GHz4 MB65WTBT$101 
   A8-38504 / 42.9 GHz 4 MB100WTBT$87>
   A8-3870K4 / 43 GHz 4 MB100WTBT, Unlock$91>
Other families, K10 micro-architecture, Socket FM1
   E2-32002 / 22.4 GHz 1 MB65WTBT >
   Sempron X2 1982 / 22.5 GHz 1 MB65WTBT >
   A4-3400 (HX)2 / 22.7 GHz 1 MB65WTBT$40>
   A4-34002 / 22.7 GHz 1 MB65WTBT$40>
   A4-34202 / 22.8 GHz 1 MB65WTBT >
   Athlon II X2 2212 / 22.8 GHz 1 MB65WTBT >
   A6-36504 / 42.6 GHz 4 MB100WTBT$77>
   A6-3670K4 / 42.7 GHz 4 MB100WTBT, Unlock$77>
   Athlon II X4 6514 / 43 GHz 4 MB100WTBT$76>
   Athlon II X4 651K4 / 43 GHz 4 MB100WTBT, Unlock >
 • Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)
 • Background color of specs and features indicate whether they are better or worse than similar spec/feature of the A8-3820
 • Click on the >  icon to compare any CPU in the table with the AMD A8-3820 (Javascript required).
 • The 'Price' column shows official AMD prices as of Apr 9, 2014. Prices for obsolete and tray-only processors are not provided.
 • List of related CPUs is not complete.
 • Features abbreviations:
TBT - Dynamic Acceleration / Turbo Boost
Unlock - Unlocked multiplier

Pictures (3)

AMD A8-3820 CPU pictures
2012-06-11 17:17:36
Posted by: gshv

Top view. The processor was manufactured in the middle of December 2011.
AMD A8-3820 CPU pictures
2012-06-11 17:17:59
Posted by: gshv

Bottom view
2012-11-14 00:59:42
Posted by: gshv

CPU-Z screenshot
Comments (0)

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