AMD A8-Series A8-3870K - AD3870WNZ43GX / AD3870WNGXBOX

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Specifications

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AMD A8-3870K specifications

General information
Type	CPU / Microprocessor
Market segment	Desktop
Family	AMD A8-Series
Model number ?	A8-3870K
CPU part numbers	AD3870WNZ43GX is an OEM/tray microprocessor AD3870WNGXBOX is a boxed microprocessor
Frequency ?	3000 MHz
Package	905-pin lidded micro-PGA package
AMD Package number	31012
Socket	Socket FM1
Size	1.57" x 1.57" / 4cm x 4cm
Fan/heatsink	FHSA7015B-1268
Introduction date	Dec 20, 2011
Price at introduction	$135

Architecture / Microarchitecture
Microarchitecture	K10
Platform	Lynx
Processor core ?	Llano
Core stepping ?	LN1-B0
Manufacturing process	0.032 micron 1178 million transistors
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
Cache latency	3 (L1 cache) 21 (L2 cache)
Multiprocessing	Uniprocessor
Features	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 ?
Low power features	PowerNow!

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
Other peripherals	PCI Express 2.0

Electrical / Thermal parameters
V core ?	0.45V - 1.4125V
Maximum operating temperature ?	72.7°C
Thermal Design Power ?	100 Watt

Notes on AMD AD3870WNZ43GX
The processor has unlocked clock multiplier

CPUs, related to AMD A8-3870K

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

AMD A8-Series family, Socket FM1

   A8-3800 4 / 4 2.4 GHz 2.7 GHz 4 MB 65 Watt TBT, Unlock $91

   A8-3820 4 / 4 2.5 GHz 2.8 GHz 4 MB 65 Watt TBT, Unlock $101

   A8-3850 4 / 4 2.9 GHz 4 MB 100 Watt Unlock $87

   A8-3870K 4 / 4 3 GHz 4 MB 100 Watt Unlock $91

Other families, K10 micro-architecture, Socket FM1

   E2-3200 2 / 2 2.4 GHz 1 MB 65 Watt Unlock

   Sempron X2 198 2 / 2 2.5 GHz 1 MB 65 Watt Unlock

   A4-3400 (HX) 2 / 2 2.7 GHz 1 MB 65 Watt Unlock $40

   A4-3400 2 / 2 2.7 GHz 1 MB 65 Watt Unlock $40

   A4-3420 2 / 2 2.8 GHz 1 MB 65 Watt Unlock

   Athlon II X2 221 2 / 2 2.8 GHz 1 MB 65 Watt Unlock

   A6-3650 4 / 4 2.6 GHz 4 MB 100 Watt Unlock $77

   A6-3670K 4 / 4 2.7 GHz 4 MB 100 Watt Unlock $77

   Athlon II X4 651 4 / 4 3 GHz 4 MB 100 Watt Unlock $76

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

• Highlighted numbers and features indicate whether specific processor performs better or worse than A8-3870K

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

• The 'Price' column shows official AMD prices as of Jun 4, 2013. 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

FAQ

Q: I have an AMD A8-3870K microprocessor. Is it possible to upgrade it?

A: No. This is the fastest processor for Socket FM1.

AMD A8-3870K Overclocking

Sorry, overclocking information is not available at this time.

Pictures (7)


AMD A8-3870K box pictures
2012-01-06 02:56:44 Posted by: gshv
The box has exactly the same size as other socket FM1 boxed processors. The fan/heatsink is a cheap one with aluminum base.


2012-01-06 02:57:21 Posted by: gshv
Front view.


2012-01-06 02:57:47 Posted by: gshv
Side view.


2012-01-06 02:58:16 Posted by: gshv
Back view.


2012-02-19 13:07:41 Posted by: gshv
CPU-Z screenshot


2012-08-21 18:04:45 Posted by: gshv
Top view. The processor was manufactured in the first half of December 2011.


2012-08-21 18:05:09 Posted by: gshv
Bottom view.

News

AMD drops prices of Athlon II and A-Series processors

Nov 06, 2012: Last month DigiTimes reported on upcoming price reductions of older generation of AMD APUs. According to their sources, AMD was going to reduce prices of socket FM1 processors by as much as 35%. Yesterday AMD updated their official price list, and posted new prices of A-Series microprocessors, however the cuts were not as big as expected.

AMD to drop prices, launch FX-4130 CPU on August 27

Aug 24, 2012: AMD today updated A-Series, FX-Series and Phenom II pricing pages, lowering prices on full range of "Llano" APUs, and high performance K10 and "Bulldozer" CPUs. The pages shows effective date August 27, which suggests that the price drops will happen next Monday. Overall, the prices were cut by 1% - 23%.

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.

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.

AMD A8-3870K and A6-3670K are available for pre-order

Dec 05, 2011: This year AMD released a handful of A- and E-Series "Llano" 32nm processors with integrated graphics unit. According to X-bit labs, a few additional Llano models will be launched in January 2012, including A4-3420, A6-3620 and A8-3820, which are slightly faster versions of A4-3400, A6-3600 and A8-3800. There will be also two products with unlocked clock multiplier, A6-3670K and A8-3870K. Last two CPUs are now available for pre-order in US.

Bits and pieces: Mobile Celerons discontinued, Llano specifications

Sep 02, 2011: Yesterday Intel published Product Change Notification (PCN), notifying its customers of upcoming discontinuation of several mobile Celerons. End-of-Line date, or last order date, for mainstream Celeron 900, T3300 and P4500, as well as ultra low voltage 743, is February 29, 2012.

Benchmarks

Benchmark tools

Compare AMD A8-3870K 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 A8-3870K benchmarks page.

AMD A8-3870K benchmarks

The graphs below show up to 10 processors with aproximately the same level of performance in different types of applications. All processors were tested at nominal frequency (not overclocked), with stock heatsink and default BIOS settings. To see how the A8-3870K compares to other CPUs please see benchmark tools section above.

Benchmarked processor

CPU ID: 300F10

CPU vendor string: AuthenticAMD

CPU name string: AMD A8-3870 APU with Radeon(tm) HD Graphics

Integer performance

Part number Result

AMD Phenom II X4 955 (125W, rev. C2) ?

103.1%

AMD Phenom II X4 B97 ?

103%

AMD Phenom II X4 955 (125W, rev. C3, BE) ?

103%

AMD Phenom II X4 840 ?

102.8%

AMD FX-6100 ?

100.3%

AMD A8-3870K ?

100%

AMD Athlon II X4 645 ?

99.8%

AMD Phenom II X4 940 ?

96.8%

AMD Athlon II X4 640 (rev. E0) ?

96.6%

AMD Athlon II X4 640 ?

96.6%

AMD Phenom II X4 960T ?

96.6%

Floating Point performance

Part number Result

Intel Core i5-2300 ?

103.4%

AMD Athlon II X4 645 ?

102.8%

AMD FX-8120 (95W) ?

102.7%

AMD FX-8120 ?

101.7%

Intel Core i5-760 ?

100.5%

AMD A8-3870K ?

100%

AMD Phenom II X4 B95 ?

99.9%

AMD Phenom II X4 945 (95W, rev. C2) ?

99.8%

AMD Phenom II X4 940 ?

99.8%

AMD Athlon II X4 640 ?

99.7%

AMD Phenom II X4 945 (125W) ?

99.7%

MMX / SSE / SSE2 performance

Part number Result

Intel Core 2 Quad Q9400 ?

100.7%

Intel Core i5-650 ?

100.7%

AMD Phenom II X4 960T ?

100.5%

AMD Athlon II X4 645 ?

100.2%

AMD FX-4170 ?

100.1%

AMD A8-3870K ?

100%

AMD A8-6600K ?

99.3%

AMD Phenom II X4 940 ?

98.5%

AMD Phenom II X4 945 (125W) ?

98%

AMD Phenom II X4 945 (95W, rev. C2) ?

98%

AMD Phenom II X4 B95 ?

98%

Memory-intensive program performance

Part number Result

AMD Phenom II X4 940 ?

103.4%

AMD Phenom II X4 650T ?

103.2%

AMD Phenom II X4 820 ?

101.1%

AMD Phenom II X3 720 (non-BE) ?

101%

AMD Phenom II X3 720 (BE) ?

100.8%

AMD A8-3870K ?

100%

AMD Phenom II X4 910 ?

99.4%

Intel Core 2 Quad Q9505 ?

99.2%

AMD Phenom II X4 910e ?

99%

AMD A8-3850 ?

98.7%

AMD Phenom II X4 810 ?

98%

CPU ID (5)

CPUID Tools

Our CPUID database contains 5 records for this microprocessor. See all submitted records.
Use our CPU identification tool to check features of your CPU.

CPUID features of AMD A8-3870K

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 A8-3870K CPU.

Manufacturer:	AMD
CPU Family:	A8-Series
Model Number:	A8-3870K
Frequency:	3000 MHz

Part number:	AD3870WNZ43GX
Stepping Code:
Comment:
Submitted by:

General information
Vendor:	AuthenticAMD
Processor name (BIOS):	AMD A8-3870 APU with Radeon(tm) HD Graphics
Cores:	4
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
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

RDTSCP

SKINIT / STGI support

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

PowerNow! / Cool'n'Quiet Advanced programmable interrupt controller

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

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

Comments (2)

You're welcome to post suggestions, corrections, your own personal AMD A8-3870K review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.

Underclock/Undervolts nicely but poor HSF

2012-05-24 15:39:38

Posted by: ATP

I was able to set 300Mhz at 0.6250V as its lowest performance state using K10stat so my system, monitor included now only consumes 55W at idle within Windows. The processor is great but the HSF included cannot keep the cpu temp down. I prefer 40-45 degrees C but I was getting 50+ degrees just to boot into Windows so I had to replace it with a copper one. I also had to reduce Vcore to 1.2V instead of the default 1.4V. AMD should have included an HSF with copper/heatpipes for it.

clock speed

2012-10-06 15:41:52

Posted by: steve

( this comment is a complant to admin.)
dear cpu world, i'm trying to conpare many cpus at once and 1 bite of info. that is needed is clock speed. Clock speed is someting pepeol look for and should be shown in genral info. for all to see. but, thank you for all the other things you tell us that many sites dont mention.

Response: Technically, "Clock speed" is not a correct term, even though it is widely used everywhere. We list it as "Frequency".

Last modified: 19 Jun 2013