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AMD Athlon II X4 651K - AD651KWNZ43GX / AD651KWNGXBOX

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AMD Athlon II X4 651K specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD Athlon II X4
Model number  ? 651K
CPU part numbers
  • AD651KWNZ43GX is an OEM/tray microprocessor
  • AD651KWNGXBOX is a boxed microprocessor
Frequency  ? 3000 MHz
Package905-pin organic lidded micro Pin Grid Array (UOF905)
SocketSocket FM1
Size1.57" x 1.57" / 4cm x 4cm
Weight1.4oz / 39g
Introduction date1st quarter 2012
Architecture / Microarchitecture
Processor core  ? Llano
Core stepping  ? LN-B0
Manufacturing process0.032 micron
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
  • MMX instructions
  • Extensions to MMX
  • 3DNow! technology
  • Extensions to 3DNow!
  • 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 featuresPowerNow!
Integrated peripherals / components
Integrated graphicsNone
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
Thermal Design Power  ? 100 Watt
Notes on AMD Athlon II X4 651K
  • The processor has unlocked clock multiplier

Detailed side-by-side comparison

For detailed comparision of the AMD 651K 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: 651K, AD651KWNZ43GX, AMD Athlon II X4 3GHz, Llano Socket FM1


Q: Can I upgrade my AMD Athlon II X4 651K processor?
A: No. This CPU is the fastest for Socket FM1.

Athlon II X4 651K Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

AMD to discontinue socket FM1 APUs
Nov 27, 2012: Since the launch of socket FM2 APU platform in October 2012, sales of the socket FM1 APUs, based on Llano core, have been in decline. In the second quarter of this year AMD sold 3.3 million socket FM1 processors. That number dropped to 0.6 million in Q3, and it is expected to be even lower this quarter. The fourth quarter will also be the last one, when AMD offers socket FM1 processors.

Compare AMD 651K 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 651K benchmarks page.

AMD 651K 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 651K 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 Athlon(tm) II X4 651 Quad-Core Processor

Integer performance

Part number   Result
AMD Phenom II X4 840  ? 
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  ? 

Floating Point performance

Part number   Result
AMD FX-8120  ? 
Intel Core i5-760  ? 
AMD A8-3870K  ? 
AMD Athlon II X4 651  ? 
AMD Phenom II X4 B95  ? 
AMD Athlon II X4 651K  ? 
AMD Phenom II X4 945 (95W, rev. C2)  ? 
AMD Phenom II X4 940  ? 
AMD Athlon II X4 640  ? 
AMD Phenom II X4 945 (125W)  ? 
Intel Core i5-2500S  ? 

MMX / SSE / SSE2 performance

Part number   Result
Intel Core i5-650  ? 
AMD Phenom II X4 960T  ? 
AMD Athlon II X4 645  ? 
AMD Athlon II X4 651  ? 
AMD FX-4170  ? 
AMD Athlon II X4 651K  ? 
AMD A8-3870K  ? 
Intel Core i3-550  ? 
AMD A8-6600K  ? 
AMD Phenom II X4 940  ? 
AMD Phenom II X4 945 (125W)  ? 

Memory-intensive program performance

Part number   Result
AMD Phenom II X3 720 (non-BE)  ? 
AMD Phenom II X3 720 (BE)  ? 
AMD Phenom II X2 550 BE (rev. C2)  ? 
AMD Athlon II X4 651  ? 
AMD A8-3870K  ? 
AMD Athlon II X4 651K  ? 
Intel Core i5-580M (PGA988)  ? 
AMD Phenom II X2 550 (rev. C3)  ? 
AMD Phenom II X4 910  ? 
Intel Core 2 Quad Q9505  ? 
AMD Phenom II X4 910e  ? 

CPU ID information for the Athlon II X4 651K

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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 651K CPU.

CPU Family:Athlon II X4
Model Number:651K
Frequency:2622 MHz
Part number:
Stepping Code:DA 1206PGS
Submitted by:CPU-World
General information
Processor name (BIOS):AMD Athlon(tm) II X4 651 Quad-Core Processor
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
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 651K

Model Cores /
Frequency L2
TDP Features Price  
AMD Athlon II X4 family, Socket FM1
   Athlon II X4 6314 / 42.6 GHz4 MB100WUnlock$65>
   Athlon II X4 631 (65W)4 / 42.6 GHz4 MB65WUnlock >
   Athlon II X4 6384 / 42.7 GHz4 MB65WUnlock >
   Athlon II X4 6414 / 42.8 GHz4 MB100WUnlock$65>
   Athlon II X4 6514 / 43 GHz4 MB100WUnlock$76>
   Athlon II X4 651K4 / 43 GHz4 MB100WUnlock  
AMD Athlon II X4 family, K10 micro-architecture, Other sockets
   Athlon II X4 630 (rev. C2)4 / 42.8 GHz2 MB95WUnlock >
   Athlon II X4 630 (rev. C3)4 / 42.8 GHz2 MB95WUnlock >
   Athlon II X4 635 (rev. C2)4 / 42.9 GHz2 MB95WUnlock >
   Athlon II X4 635 (rev. C3)4 / 42.9 GHz2 MB95WUnlock >
   Athlon II X4 6404 / 43 GHz2 MB95WUnlock$67>
   Athlon II X4 640 (rev. E0)4 / 43 GHz2 MB95WUnlock >
   Athlon II X4 6454 / 43.1 GHz2 MB95WUnlock$77>
   Athlon II X4 6504 / 43.2 GHz2 MB95WUnlock >
Other families, K10 micro-architecture, Socket FM1
   E2-32002 / 22.4 GHz1 MB65WUnlock >
   Sempron X2 1982 / 22.5 GHz1 MB65WUnlock >
   A4-3400 (HX)2 / 22.7 GHz1 MB65WUnlock$40>
   A4-34002 / 22.7 GHz1 MB65WUnlock$40>
   A4-34202 / 22.8 GHz1 MB65WUnlock >
   Athlon II X2 2212 / 22.8 GHz1 MB65WUnlock >
   A6-36504 / 42.6 GHz4 MB100WUnlock$77>
   A6-3670K4 / 42.7 GHz4 MB100WUnlock$77>
   A8-38504 / 42.9 GHz4 MB100WUnlock$87>
   A8-3870K4 / 43 GHz4 MB100WUnlock$91>
 • 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 651K
 • Click on the >  icon to compare any CPU in the table with the AMD Athlon II X4 651K (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

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