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AMD Athlon II X4 645 - ADX645WFK42GM / ADX645WFGMBOX

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AMD Athlon II X4 645 specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD Athlon II X4
Model number  ? 645
CPU part numbers
  • ADX645WFK42GM is an OEM/tray microprocessor
  • ADX645WFGMBOX is a boxed microprocessor
Stepping codesAADHC AD   NADHC AD
Frequency  ? 3100 MHz
Bus speed  ? 667 MHz Memory controller
One 2000 MHz 16-bit HyperTransport link
Clock multiplier  ? 15.5
Package938-pin organic micro-PGA
SocketsSocket AM2+
Socket AM3
Weight1.4oz / 39.5g (CPU)
12.7oz / 358.7g (box)
Introduction dateSep 21, 2010
Price at introduction$122
Architecture / Microarchitecture
Processor core  ? Propus
Core stepping  ? BL-C3
Manufacturing process0.045 micron SOI
Die size169mm2
Data width64 bit
The number of cores4
The number of threads4
Floating Point UnitIntegrated
Level 1 cache size  ? 4 x 64 KB instruction caches
4 x 64 KB data caches
Level 2 cache size  ? 4 x 512 KB caches
Level 3 cache sizeNone
Cache latency3 (L1 cache)
15 (L2 cache)
  • 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  ? 1.05V - 1.4V
Maximum operating temperature  ? 71°C
Thermal Design Power  ? 95 Watt

Detailed side-by-side comparison

For detailed comparision of the AMD Athlon II X4 645 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: ADX645WFK42GM, AMD Athlon II X4 3.1GHz, Propus Socket AM2+, Socket AM3

Historical price chart

The chart below shows official prices of AMD Athlon II X4 640, 641, 645 and 651 processors:

Historical official prices of Athlon II X4 640, 641, 645 and 651 processors


Q: Can I upgrade my AMD Athlon II X4 645 CPU?
A: Probably yes. Processor compatibility is determined by your motherboard. Please see resource for CPU support list for your board.

Athlon II X4 645 Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

AMD adds Athlon II X2 280 CPU, drops some prices
Feb 01, 2013: Earlier this week XBiT laboratories published two slides, showing updated AMD desktop lineup. On the lower end of that lineup AMD had FX-4130 microprocessor, and the mid- and high-performance products were Piledriver-based FX-4300, FX-6300, FX-8320 and FX-8350 CPUs with "Vishera" core. The most intriguing was that the FX-4130 had box part number FD4130WMHKBOX, which was different from previously launched FX-4130 CPU with FD4130FRGUBOX box SKU.

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 cuts prices on older desktop models
Dec 07, 2010: With the launch of three new desktop processors today, AMD also dropped prices on many older models. Majority of price cuts were insignificant, typically in the range from 3% to 10%. The price of one microprocessor, Phenom II X4 970, was increased by $5, or by about 3%.

AMD updates Athlon II and Phenom II lineups
Sep 21, 2010: Today AMD launched 6 new desktop models, which span across six different Athlon II and Phenom II families. Also, two budget-class models, Sempron 145 and Athlon II X2 220, are now available as boxed processors. The new processors are offered in a wide range of prices, from budget dual-core Athlon II 265 at $76 and up to high-performance Phenom II 1075T at $245.

New AMD CPUs show up in retail stores
Sep 18, 2010: A few days left before AMD officially announces new refresh of Athlon II and Phenom II microprocessor line-ups. In this refresh AMD is going to introduce new dual-, triple- and quad-core Athlon II CPUs with model numbers 265, 450 and 645, and three Phenom II microprocessors - dual-core 560, quad-core 970, and six-core 1075T.

New AMD desktop CPUs are on the way
Aug 11, 2010: AMD is getting close to introducing a new wave of Athlon II and Phenom II desktop microprocessors. This time we will see a variety a CPUs from single-core Sempron 145 to six-core 1075T.

AMD boxed desktop processors for Q3/Q4 2010
Jul 28, 2010: We recently stumbled upon public AMD dealer product training document, that contains limited information about planned desktop microprocessors for the rest of this year. The document doesn't show any new processor models besides those that are already known from our stories, and from stories posted by other hardware news sites. Nevertheless, we decided to post two pages from the document as they confirm impending release of new Phenom II, Athlon II and Sempron models.

AMD Athlon II and Phenom II CPUs planned for the third quarter
Jul 20, 2010: AMD already refreshed their lines of desktop Athlon II and Phenom II families two times in 2010. First time it happened in January, when AMD released standard-power Phenom II X2 and Atlhon II microprocessors, and second time it was at the end of April and in May, when AMD introduced 6-core Phenom II processors, and updated the whole line of Athlon II CPUs. In the third quarter AMD plans an incremental upgrade for many energy-efficient and standard-power Athlon II CPUs, and will introduce a few Phenom II models.

Compare AMD Athlon II X4 645 benchmark results with all tested CPUs from one of the following families:

To compare this Athlon II X4 CPU with any tested processor please proceed to

For additional benchmarks, comparing multi-threaded performance of this microprocessor with other Athlon II X4 CPUs and the fastest AMD and Intel x86 chips, please visit AMD Athlon II X4 645 benchmarks page.

AMD Athlon II X4 645 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 Athlon II X4 645 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:0F53h
CPU vendor string:AuthenticAMD
CPU name string:AMD Athlon(tm) II X4 645 Processor

Integer performance

Part number   Result
Intel Core i3-4340  ? 
Intel Core i5-2500T  ? 
AMD FX-6100  ? 
AMD Athlon II X4 651  ? 
AMD Athlon II X4 651K  ? 
AMD Athlon II X4 645  ? 
Intel Core i3-4330  ? 
AMD Phenom II X4 940  ? 
AMD Athlon II X4 640 (rev. E0)  ? 
AMD Athlon II X4 640  ? 
AMD Phenom II X4 960T  ? 

Floating Point performance

Part number   Result
Intel Core i5-4440S  ? 
AMD Phenom II X4 840  ? 
AMD Phenom II X4 B97  ? 
AMD FX-8140  ? 
Intel Core i5-2300  ? 
AMD Athlon II X4 645  ? 
AMD FX-8120 (95W)  ? 
AMD FX-8120  ? 
Intel Core i5-760  ? 
AMD A8-3870K  ? 
AMD Athlon II X4 651  ? 

MMX / SSE / SSE2 performance

Part number   Result
Intel Core i5-650  ? 
Intel Core 2 Quad Q9400  ? 
AMD Phenom II X4 960T  ? 
AMD FX-4170  ? 
AMD Athlon II X4 651  ? 
AMD Athlon II X4 645  ? 
AMD Athlon II X4 651K  ? 
Intel Core i3-550  ? 
AMD A8-3870K  ? 
AMD A8-6600K  ? 
AMD Phenom II X4 940  ? 

Memory-intensive program performance

Part number   Result
AMD A6-6420K  ? 
AMD Phenom II X2 521  ? 
AMD Phenom II X4 840  ? 
AMD A6-6400K  ? 
AMD Athlon II X3 460  ? 
AMD Athlon II X4 645  ? 
AMD A6-3620  ? 
AMD Athlon II X2 270  ? 
AMD Athlon II X3 455  ? 
AMD Athlon II X4 640 (rev. E0)  ? 
AMD Phenom II X2 511  ? 

CPU ID information for the Athlon II X4 645

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 X4 645 CPU.

CPU Family:Athlon II X4
Model Number:645
Frequency:3487 MHz
Part number:
Stepping Code:
Submitted by:
General information
Processor name (BIOS):AMD Athlon(tm) II X4 645 Processor
Logical processors:4
Processor type:Original OEM Processor
Core stepping:BL-C3
CPUID signature:100F53
Family:16 (010h)
Model: 5 (05h)
Stepping: 3 (03h)

Cache: L1 data L1 instruction L2
Size: 4 x 64 KB 4 x 64 KB 4 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 X4 645

Model Cores /
Frequency L2
TDP Features Price  
AMD Athlon II X4 family, Socket AM2+ / Socket AM3
   Athlon II X4 600e4 / 42.2 GHz2 MB 45W >
   Athlon II X4 605e (rev. C2)4 / 42.3 GHz2 MB 45W$98>
   Athlon II X4 605e (rev. C3)4 / 42.3 GHz2 MB 45W >
   Athlon II X4 610e4 / 42.4 GHz2 MB 45W$122>
   Athlon II X4 615e4 / 42.5 GHz2 MB 45W$133>
   Athlon II X4 6204 / 42.6 GHz2 MB 95W >
   Athlon II X4 620e4 / 42.6 GHz2 MB 45W >
   Athlon II X4 630 (rev. C2)4 / 42.8 GHz2 MB 95W >
   Athlon II X4 630 (rev. C3)4 / 42.8 GHz2 MB 95W >
   Athlon II X4 635 (rev. C2)4 / 42.9 GHz2 MB 95W >
   Athlon II X4 635 (rev. C3)4 / 42.9 GHz2 MB 95W >
   Athlon II X4 6404 / 43 GHz2 MB 95W$67>
   Athlon II X4 640 (rev. E0)4 / 43 GHz2 MB 95W >
   Athlon II X4 6454 / 43.1 GHz2 MB 95W$77 
   Athlon II X4 6504 / 43.2 GHz2 MB 95W >
AMD Athlon II X4 family, K10 micro-architecture, Other sockets
   Athlon II X4 6414 / 42.8 GHz4 MB 100W$65>
   Athlon II X4 6514 / 43 GHz4 MB 100W$76>
   Athlon II X4 651K4 / 43 GHz4 MB 100WUnlock >
Other families, K10 micro-architecture, Socket AM2+ / Socket AM3
   Athlon II 170u1 / 12 GHz1 MB 20W >
   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 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 X4 645
 • Click on the >  icon to compare any CPU in the table with the AMD Athlon II X4 645 (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 (5)

Athlon II X4 645 box pictures
2011-12-17 22:31:32
Posted by: gshv

Front view.
Athlon II X4 645 box pictures
2011-12-17 22:31:52
Posted by: gshv

2011-12-17 22:32:11
Posted by: gshv

Side view
2011-12-17 22:32:33
Posted by: gshv

Back view
2012-09-12 03:29:07
Posted by: gshv

CPU-Z screenshot
Comments (0)

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