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AMD Athlon II X3 405e - AD405EHDK32GI / AD405EHDGIBOX

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The triple-core 405e was introduced in October 2009, and for six months it was the fastest low-power Athlon II X3 microprocessor, until it was replaced by 415e model. At this time, middle of June 2010, the 415e is almost impossible to buy in retail, so the 405e still may be considered the fastest low-power triple-core CPU. The 405e runs at 2.3 GHz, and, like all latest AMD triple- and quad-core processors, has 128 KB of level 1 and 512 KB of level 2 cache per core. The CPU employs standard for all Athlon II families features: 64-bit instruction set, SIMD instructions up to SSE3, and Enhanced Virus Protection (the same as Execute Disable bit on Intel microprocessors). Athlon II X3 405e has very low 45 Watt Thermal Design Power, which is more than 50% lower than 95W TDP of standard voltage triple-core Athlon IIs. The processor is manufactured in 938-pin micro-PGA package, that works in socket AM2+ and AM3 motherboards. When used in AM2+ motherboards, the CPU does not support DDR3 memory. Besides AD405EHDK32GI / AD405EHDGIBOX part, which has C2 core stepping, AMD also manufactured 405e model with C3 core revision. That model has OEM part number AD405EHDK32GM.

While the Athlon II X3 405e processor uses three cores, internally it has four physical cores with one core disabled. It is possible to unlock the fourth core on the 405e processors using "Advanced Clock Calibration" option in motherboard's BIOS, but the results could be unpredictable. Good percentage of unlocked triple-core processors would run all operating systems and applications without any problems, some processors would crash randomly when running an application or booting into an operating system, and others may no POST at all. Performance gain from unlocking the forth core can be estimated by comparing the 405e with quad-core 605e microprocessor.

The Athlon I X3 405e runs at the same frequency and has the same Thermal Design Power as the quad-core Athlon II X4 605e CPU. With the exception of the number of cores, all other features on both processors are identical. In applications, that heavily utilize all microprocessor cores, like image rendering, video or audio encoding, the 405e may be up to 25% - 30% slower than the 605e. In all other applications, including many games, performance of the 405e is comparable to model 605e. As of October 2009, the Athlon II X3 405e is priced nearly 40% cheaper than the quad-core 605e, which makes it a much better option for upgrade or new system in cases when low budget is as important as low power consumption and processor performance.

AMD Athlon II X3 405e specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD Athlon II X3
Model number  ? 405e
CPU part numbers
  • AD405EHDK32GI is an OEM/tray microprocessor
  • AD405EHDGIBOX is a boxed microprocessor
Stepping codeCADAC AD
Frequency  ? 2300 MHz
Bus speed  ? 667 MHz Memory controller
One 2000 MHz 16-bit HyperTransport link
Clock multiplier  ? 11.5
Package938-pin organic micro-PGA
AMD Package number30261
SocketsSocket AM2+
Socket AM3
Weight1.3oz / 38g (CPU)
11.6oz / 328.9g (box)
Introduction dateOct 20, 2009
Price at introduction$102
Architecture / Microarchitecture
Processor core  ? Rana
Core stepping  ? BL-C2
Manufacturing process0.045 micron SOI
Die size169mm2
Data width64 bit
The number of cores3
The number of threads3
Floating Point UnitIntegrated
Level 1 cache size  ? 3 x 64 KB instruction caches
3 x 64 KB data caches
Level 2 cache size  ? 3 x 512 KB caches
Level 3 cache sizeNone
  • MMX instructions
  • 3DNow! technology
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSE4a  ? 
  • ABM / Advanced Bit Manipulation  ? 
  • AMD64 / AMD 64-bit technology  ? 
  • AMD-V / AMD Virtualization technology
  • EVP / Enhanced Virus Protection  ? 
Low power features
  • Cool'n'Quiet 3.0
  • CoolCore Technology  ? 
  • Dual Dynamic Power Management  ? 
  • Core C1 and C1E states
  • Package S0, S1, S3, S4 and S5 states
Integrated peripherals / components
Integrated graphicsNone
Memory controller
  • The number of controllers: 1
    Memory channels: 2
    Channel width (bits): 72
    Supported memory: DDR2-1066, DDR3-1333
    DIMMs per channel: up to 2
    Maximum memory bandwidth (GB/s): 21.3
Other peripheralsHyperTransport 3 technology
Electrical / Thermal parameters
V core  ? 0.775V - 1.2V
Maximum operating temperature  ? 55°C - 71°C
Thermal Design Power  ? 45 Watt
Notes on AMD Athlon II X3 405e
  • The fastest supported memory is DDR2-1066 and DDR3-1333

Detailed side-by-side comparison

For detailed comparision of the AMD 405e 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: 405e, AD405EHDK32GI, AMD Athlon II X3 2.3GHz, Rana Socket AM2+, Socket AM3

Historical price chart

The chart below shows official prices of AMD Athlon II X3 400e, 405e and 415e processors:

Historical official prices of Athlon II X3 400e, 405e and 415e processors


Q: Can I upgrade my Athlon II X3 405e CPU?
A: Probably yes. Processor compatibility is determined by your motherboard. Please check website for CPU support list for your board.

Athlon II X3 405e Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

AMD drops prices on full line of desktop CPUs
May 03, 2011: As you may already know, today AMD launched Phenom II X4 980 flagship model, as well as a few desktop processors from Athlon II and Phenom II families. At the same time, AMD dropped prices on existing desktop CPUs. As a matter of fact, every Athlon II and Phenom II desktop model was reduced in price on average by 11.6%.

AMD cuts prices on energy-efficient Athlon II processors
Sep 27, 2010: Earlier this week, on September 21, AMD unveiled 10 new desktop microprocessors. New models included 6 standard-power CPUs, one ultra-low voltage processor, and three energy-efficient "e" models. We just found out that, on top of adding new microprocessors to Athlon II and Phenom II families, AMD also cut prices on energy efficient parts. We also learned prices of recently introduced "e" models.

Compare AMD 405e (rev. C2) benchmark results with all tested CPUs from one of the following families:

To compare this Athlon II X3 CPU with any tested processor please proceed to

For additional benchmarks, comparing multi-threaded performance of this microprocessor with other Athlon II X3 CPUs and the fastest AMD and Intel x86 chips, please visit AMD Athlon II X3 405e (rev. C2) benchmarks page.

AMD 405e 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 405e (rev. C2) 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:0F52h
CPU vendor string:AuthenticAMD
CPU name string:AMD Athlon(tm) II X3 405e Processor

Integer performance

Part number   Result
AMD Athlon II X3 415e  ? 
Intel Core i3-2100T  ? 
AMD Phenom II X3 700e  ? 
Intel Core 2 Extreme X6800  ? 
AMD Phenom II X2 521  ? 
AMD Athlon II X3 405e (rev. C2)  ? 
AMD Athlon II X3 405e (rev. C3)  ? 
AMD Phenom II N870  ? 
AMD Athlon II X2 270  ? 
AMD Phenom II X2 511  ? 
AMD A6-3500  ? 

Floating Point performance

Part number   Result
AMD A8-5600K  ? 
AMD Phenom II X3 700e  ? 
AMD A10-5700  ? 
AMD Phenom II X2 521  ? 
AMD Athlon II X3 405e (rev. C3)  ? 
AMD Athlon II X3 405e (rev. C2)  ? 
AMD Phenom II N870  ? 
AMD Athlon II X2 270  ? 
AMD Phenom II X2 511  ? 
AMD A8-5500  ? 
AMD A6-3500  ? 

MMX / SSE / SSE2 performance

Part number   Result
AMD Phenom II X2 550 (rev. C3)  ? 
AMD Phenom II X2 550 BE (rev. C2)  ? 
AMD Athlon II X2 255 (rev. C3)  ? 
AMD Athlon II X2 255 (rev. C2)  ? 
AMD A6-6400K  ? 
AMD Athlon II X3 405e (rev. C2)  ? 
AMD Athlon II X3 405e (rev. C3)  ? 
AMD Phenom II N870  ? 
AMD A6-3500  ? 
AMD Phenom II X2 545 (rev. C2)  ? 
AMD Athlon II X2 250 (rev. C3)  ? 

Memory-intensive program performance

Part number   Result
AMD Athlon II X3 415e  ? 
AMD Athlon II X3 2.6 GHz ZD260121K3216  ? 
AMD Athlon II X2 220  ? 
AMD Athlon II X3 405e (rev. C3)  ? 
AMD Athlon II X2 215 (rev. C2)  ? 
AMD Athlon II X3 405e (rev. C2)  ? 
AMD Athlon II X2 210e  ? 
AMD Athlon II X3 400e  ? 
AMD Phenom II N870  ? 
AMD Phenom II N850  ? 
AMD Phenom II N830  ? 

CPU ID information for the Athlon II X3 405e

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 Athlon II X3 405e CPU.

CPU Family:Athlon II X3
Model Number:405e
Frequency:2294 MHz
Part number:
Stepping Code:CADAC AD 0931BPBW
Submitted by:CPU-World
General information
Processor name (BIOS):AMD Athlon(tm) II X3 405e Processor
Logical processors:3
Processor type:Original OEM Processor
Core stepping:BL-C2
CPUID signature:100F52
Family:16 (010h)
Model: 5 (05h)
Stepping: 2 (02h)

Cache: L1 data L1 instruction L2
Size: 3 x 64 KB 3 x 64 KB 3 x 512 KB
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
PowerNow! / Cool'n'Quiet Advanced programmable interrupt controller
  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 Athlon II X3 405e (rev. C2)

Model Cores /
Frequency L2
TDP Features Price  
AMD Athlon II X3 family, Socket AM2+ / Socket AM3
   Athlon II X3 400e3 / 32.2 GHz1.5 MB 45W >
   Athlon II X3 405e (rev. C2)3 / 32.3 GHz1.5 MB 45W$72 
   Athlon II X3 405e (rev. C3)3 / 32.3 GHz1.5 MB 45W >
   Athlon II X3 415e3 / 32.5 GHz1.5 MB 45W$87>
   Athlon II X3 420e3 / 32.6 GHz1.5 MB 45W$97>
   Athlon II X3 4253 / 32.7 GHz1.5 MB 95W >
   Athlon II X3 425e3 / 32.7 GHz1.5 MB 45W >
   Athlon II X3 435 (rev. C2)3 / 32.9 GHz1.5 MB 95W >
   Athlon II X3 435 (rev. C3)3 / 32.9 GHz1.5 MB 95W >
   Athlon II X3 440 (rev. C2)3 / 33 GHz1.5 MB 95W >
   Athlon II X3 440 (rev. C3)3 / 33 GHz1.5 MB 95W >
   Athlon II X3 4453 / 33.1 GHz1.5 MB 95W >
   Athlon II X3 4503 / 33.2 GHz1.5 MB 95W$60>
   Athlon II X3 4553 / 33.3 GHz1.5 MB 95W$65>
   Athlon II X3 4603 / 33.4 GHz1.5 MB 95W$69>
Other families, K10 micro-architecture, Socket AM2+ / Socket AM3
   Athlon II 170u1 / 12 GHz1 MB 20W >
   Sempron 1501 / 12.9 GHz1 MB 45W >
   Athlon X2 5200+ (0.045 micron)2 / 22.3 GHz1 MB 65W >
   Sempron X2 1902 / 22.5 GHz1 MB 45W >
   Athlon II X2 2802 / 23.6 GHz2 MB 65W$49>
   Phenom II X2 570 BE2 / 23.5 GHz1 MB6 MB80WUnlock >
   Phenom II X3 B773 / 33.2 GHz1.5 MB6 MB95W >
   Athlon II X4 6504 / 43.2 GHz2 MB 95W >
   Phenom II X4 9804 / 43.7 GHz2 MB6 MB125WUnlock$163>
 • 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 Athlon II X3 405e (rev. C2)
 • Click on the >  icon to compare any CPU in the table with the AMD Athlon II X3 405e (rev. C2) (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:
Unlock - Unlocked multiplier

Pictures (7)

2010-01-22 21:27:17
Posted by: gshv

2010-01-22 21:27:41
Posted by: gshv

2010-01-22 21:28:02
Posted by: gshv

Athlon II X3 405e box
2010-01-22 21:28:30
Posted by: gshv

Athlon II X3 405e box
2010-06-11 11:57:29
Posted by: gshv

Pictures of AMD Athlon II X3 405e microprocessor
2010-06-11 11:58:55
Posted by: gshv

Stepping code CADAC. The processor was manufactured during 31st week of 2009.
Pictures of AMD Athlon II X3 405e microprocessor
2013-01-15 17:10:11
Posted by: gshv

CPU-Z screenshot
Comments (0)

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