AMD A8-Series A8-3820 AD3820OJZ43GX (AD3820OJGXBOX)

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Specifications

General information
Type	CPU / Microprocessor
Market segment	Desktop
Family	AMD A8-Series
Model number ?	A8-3820
CPU part numbers	AD3820OJZ43GX is an OEM/tray microprocessor AD3820OJGXBOX is a boxed microprocessor
Frequency ?	2500 MHz
Turbo frequency	2800 MHz
Package	905-pin lidded micro-PGA package
Socket	Socket FM1
Size	1.57" x 1.57" / 4cm x 4cm
Introduction date	Dec 20, 2011 (announcement) January 2012 (availability)
Price at introduction	$129

Architecture / Microarchitecture
Microarchitecture	K10
Platform	Lynx
Processor core ?	Llano
Core stepping ?	B0
Manufacturing process	0.032 micron
Die size	228mm²
Data width	64 bit
The number of cores	4
The number of threads	4
Floating Point Unit	Integrated
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
Multiprocessing	Uniprocessor
Features	MMX 3DNow! SSE SSE2 SSE3 SSE4a ? AMD64 technology ? AMD-V (virtualization) technology Enhanced Virus Protection ? Turbo Core technology
Low power features	PowerNow!
On-chip peripherals	Dual-channel DDR3 memory controller PCI Express 2.0 HD graphics controller

Electrical/Thermal parameters
V core ?	0.45V - 1.4125V
Maximum operating temperature ?	70.5°C
Thermal Design Power ?	65 Watt

Notes on AMD AD3820OJZ43GX
Integrated Radeon HD 6550D GPU runs at 600 MHz and has 400 shader units The fastest supported memory is DDR3-1866

CPUs, related to AMD A8-3820

Model Cores /
Threads Freq. Turbo
freq. L2
cache TDP Features

AMD A8-Series family, Socket FM1

   AMD A8-3800 4 / 4 2.4 GHz 2.7 GHz 4 MB 65 Watt TBT

   AMD A8-3850 4 / 4 2.9 GHz 4 MB 100 Watt TBT

   AMD A8-3870K 4 / 4 3 GHz 4 MB 100 Watt TBT, Unlock

Other families, K10 micro-architecture, Socket FM1

   AMD E2-Series E2-3200 2 / 2 2.4 GHz 1 MB 65 Watt TBT

   AMD A4-3300 (HX) 2 / 2 2.5 GHz 1 MB 65 Watt TBT

   AMD A4-3300 2 / 2 2.5 GHz 1 MB 65 Watt TBT

   AMD A4-3400 (HX) 2 / 2 2.7 GHz 1 MB 65 Watt TBT

   AMD A4-3400 2 / 2 2.7 GHz 1 MB 65 Watt TBT

   AMD A4-3420 2 / 2 2.8 GHz 1 MB 65 Watt TBT

   AMD A6-3500 3 / 3 2.1 GHz 2.4 GHz 3 MB 65 Watt TBT

   AMD A6-3600 4 / 4 2.1 GHz 2.4 GHz 4 MB 65 Watt TBT

   AMD A6-3620 4 / 4 2.2 GHz 2.5 GHz 4 MB 65 Watt TBT

   AMD A6-3650 4 / 4 2.6 GHz 4 MB 100 Watt TBT

   AMD Athlon II X4 638 4 / 4 2.7 GHz 4 MB 65 Watt TBT

   AMD A6-3670K 4 / 4 2.7 GHz 4 MB 100 Watt TBT, Unlock

   AMD Athlon II X4 641 4 / 4 2.8 GHz 4 MB 100 Watt TBT

   AMD Athlon II X4 651 4 / 4 3 GHz 4 MB 100 Watt TBT

   AMD Athlon II X4 651K 4 / 4 3 GHz 4 MB 100 Watt TBT, Unlock

• Highlighted numbers and features indicate whether specific processor performs better or worse than A8-3820

• Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)

• List of related CPUs is not complete.

• Features abbreviations:

TBT - Dynamic Acceleration / Turbo Boost
Unlock - Unlocked multiplier

Pictures (0)

News

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.

Benchmarks

Compare results with tested CPUs from one of the following families:
To compare benchmark results with all other microprocessors please

Tested 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 A6-3670K ?		106.5%
AMD Phenom II X4 650T ?		103%
AMD Athlon II X4 631 ?		102.6%
AMD A6-3650 ?		102.6%
AMD FX-4170 ?		100.8%
AMD A8-3820 ?		100%
AMD Athlon II X4 2.6 GHz ZD260121K4216 ?		99.3%
AMD Phenom II X4 910e ?		99.1%
AMD Phenom II X4 910 ?		99.1%
AMD Athlon II X4 620 ?		99.1%
AMD Phenom II X4 810 ?		99.1%

Floating Point performance

Part number		Result
AMD Phenom II X4 910 ?		100.2%
AMD Athlon II X4 620e ?		100.2%
AMD Phenom II X4 910e ?		100.2%
AMD Athlon II X4 2.6 GHz ZD260121K4216 ?		100.1%
AMD Athlon II X4 620 ?		100.1%
AMD A8-3820 ?		100%
Intel Core i5-650 ?		99%
AMD Athlon II X3 460 ?		98%
AMD Phenom II X4 805 ?		96.3%
AMD Athlon II X4 615e ?		96.3%
AMD Phenom II X4 905e ?		96.2%

MMX / SSE / SSE2 performance

Part number		Result
AMD Athlon II X4 630 (rev. C3) ?		104.3%
AMD A6-3670K ?		103.6%
AMD Athlon II X3 460 ?		101.8%
Intel Core 2 Quad Q8200 ?		101.2%
AMD FX-4100 ?		100.9%
AMD A8-3820 ?		100%
AMD Athlon II X4 631 ?		99.9%
AMD A6-3650 ?		99.9%
Intel Core 2 Quad Q6600 ?		99.5%
AMD Athlon II X3 455 ?		98.9%
AMD Phenom II X4 910e ?		98%

Memory-intensive program performance

Part number		Result
AMD Phenom II X4 805 ?		104.1%
Intel Core 2 Quad Q9400 ?		103.5%
AMD A6-3670K ?		102.6%
AMD Phenom II X3 705e ?		102.2%
AMD Athlon II X4 631 ?		100.1%
AMD A8-3820 ?		100%
AMD A6-3650 ?		99.9%
AMD Phenom II X3 700e ?		98.7%
AMD A8-3800 ?		97%
Intel Core 2 Quad Q6600 ?		96.9%
AMD Phenom II X4 840 ?		94.8%

CPU ID (1)

View / search public CPUID submissions | Check your CPU

NOTE: 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.

Manufacturer:	AMD
CPU Family:	A8-Series
Model Number:	A8-3820
Frequency:	3130 MHz

Part number:	AD3820OJZ43GX
Stepping Code:	DA 1151PGT
Comment:
Submitted by:	CPU-World

General information
Vendor:	AuthenticAMD
Processor name (BIOS):	AMD A8-3820 APU with Radeon(tm) HD Graphics
Cores:	4
Logical processors:	4
Processor type:	Original OEM Processor
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
associative 2-way set
associative 16-way set
associative

Line size: 64 bytes 64 bytes 64 bytes

Lines per tag: 1 1 1

Instruction set extensions Additional instructions

MMX Advanced Bit manipulation

AMD extensions to MMX CLFLUSH

3DNow! CMOV

Extensions to 3DNow! CMPXCHG16B

SSE CMPXCHG8B

SSE2 FXSAVE/FXRSTORE

SSE3 MONITOR/MWAIT

SSE4A POPCNT

PREFETCH/PREFETCHW

SYSCALL/SYSRET

SYSENTER/SYSEXIT

Major features Other 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

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

RDTSCP

SKINIT and STGI support

SVM lock

Software thermal control

Support for NRIP save

THERMTRIP

TSC rate is ensured to be invariant across all states

Temperature sensor

Time stamp counter

Virtual 8086-mode enhancements

Watchdog timer support

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Last modified: 7 May 2012