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AMD Phenom II X4 955 Black Edition - HDZ955FBK4DGM / HDZ955FBGMBOX

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AMD Phenom II X4 955 specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD Phenom II X4
Model number  ? 955
CPU part numbers
  • HDZ955FBK4DGM is an OEM/tray microprocessor
  • HDZ955FBGMBOX is a boxed microprocessor
Stepping codesAACAC AC   CACAC AC
Frequency  ? 3200 MHz
Bus speed  ? 667 MHz Memory controller
One 2000 MHz 16-bit HyperTransport link
Clock multiplier  ? 16
Package938-pin organic micro-PGA
SocketsSocket AM2+
Socket AM3
Weight1.4oz / 38.4g (CPU)
1lb 1.2oz / 487.2g (Box)
End-of-Life dateDecember 2012
Architecture / Microarchitecture
Processor core  ? Deneb
Core stepping  ? RB-C3
Manufacturing process0.045 micron SOI
758 million transistors
Die size258mm2
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 512 KB 16-way associative caches
Level 3 cache size6 MB shared 48-way associative cache
Cache latency3 (L1 cache)
15 (L2 cache)
54 (L3 cache)
Virtual memory256 TB
  • 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  ? 0.85V - 1.4V
Maximum operating temperature  ? 55°C - 62°C
Thermal Design Power  ? 125 Watt
Notes on AMD Phenom II X4 955
  • The processor has unlocked clock multiplier

Detailed side-by-side comparison

For detailed comparision of the AMD Phenom II X4 955 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: HDZ955FBK4DGM, AMD Phenom II X4 3.2GHz, Deneb Socket AM2+, Socket AM3


Q: Can I upgrade my Phenom II X4 955 microprocessor?
A: Probably yes. Processor compatibility is determined by your motherboard. Please check resource for CPU support list for your board.

Phenom II X4 955 Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

Bits and pieces: A4-3450 APU spotted, AMD retires Phenom II CPUs
Jul 12, 2012: The first generation of AMD Accelerated Processing Units, based on Llano core, hasn't been refreshed since the beginning of this year. Considering that AMD plans to replace Llano products with "Trinity"-based ones, and that some "Trinity" parts has already been launched, we didn't expect to see new Llano processors. However, recently updated CPU support information for Biostar motherboards revealed new A4-3450 APU.

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).

Intel Core i3-550 benchmarks
May 24, 2010: Core i3-550 microprocessor was planned for the second quarter of this year. Although this model is not officially released yet, it is already available in many stores. We tested one of the processors, and compared results to other Intel Core i3 and Core i5 CPUs, as well as a few selected Athlon II and Phenom II dual-, triple- and quad-core microprocessors.

Compare AMD 955 (125W, rev. C3, BE) benchmark results with all tested CPUs from one of the following families:

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

For additional benchmarks, comparing multi-threaded performance of this microprocessor with other Phenom II X4 CPUs and the fastest AMD and Intel x86 chips, please visit AMD Phenom II X4 955 (125W, rev. C3, BE) benchmarks page.

AMD Phenom II X4 955 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 955 (125W, rev. C3, BE) 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:0F43h
CPU vendor string:AuthenticAMD
CPU name string:AMD Phenom(tm) II X4 955 Processor

Integer performance

Part number   Result
Intel Core 2 Quad Q6700  ? 
AMD FX-6300  ? 
AMD Phenom II X4 955 (125W, rev. C2, BE)  ? 
AMD Phenom II X4 955 (125W, rev. C2)  ? 
AMD Phenom II X4 B97  ? 
AMD Phenom II X4 955 (125W, rev. C3, BE)  ? 
AMD Phenom II X4 840  ? 
Intel Core i5-2500T  ? 
AMD FX-6100  ? 
AMD Athlon II X4 651  ? 
AMD Athlon II X4 651K  ? 

Floating Point performance

Part number   Result
Intel Core i5-3340  ? 
Intel Core i5-2320  ? 
Intel Core i5-4430  ? 
Intel Core i5-3330  ? 
Intel Core i5-2310  ? 
AMD Phenom II X4 955 (125W, rev. C3, BE)  ? 
AMD Phenom II X4 955 (125W, rev. C2)  ? 
AMD Phenom II X4 955 (125W, rev. C2, BE)  ? 
Intel Core i5-4440S  ? 
AMD Phenom II X4 840  ? 
AMD Phenom II X4 B97  ? 

MMX / SSE / SSE2 performance

Part number   Result
Intel Core i5-3230M (PGA)  ? 
Intel Core i5-2500T  ? 
Intel Core i5-2540M (PGA)  ? 
Intel Core i5-655K  ? 
Intel Core i5-661  ? 
AMD Phenom II X4 955 (125W, rev. C3, BE)  ? 
AMD Phenom II X4 955 (125W, rev. C2)  ? 
Intel Core i5-660  ? 
AMD Phenom II X4 955 (125W, rev. C2, BE)  ? 
AMD Phenom II X4 B97  ? 
Intel Core i5-750  ? 

Memory-intensive program performance

Part number   Result
AMD Athlon X4 760K  ? 
AMD Phenom II X4 960T  ? 
AMD Phenom II X4 955 (125W, rev. C2)  ? 
AMD Phenom II X4 B97  ? 
Intel Core i5-655K  ? 
AMD Phenom II X4 955 (125W, rev. C3, BE)  ? 
Intel Core i5-650  ? 
Intel Core i5-2430M (PGA)  ? 
AMD FX-6100  ? 
AMD Phenom II X6 1055T (95W)  ? 
Intel Core i5-2410M (PGA)  ? 

CPU ID information for the Phenom II X4 955

Our CPUID database contains 4 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 Phenom II X4 955 CPU.

CPU Family:Phenom II X4
Model Number:955
Frequency:3840 MHz
Part number:
Stepping Code:C3
Comment:Black Edition 3200 MHz
Submitted by:Argyris
General information
Processor name (BIOS):AMD Phenom(tm) II X4 955 Processor
Logical processors:4
Processor type:Original OEM Processor
Core stepping:RB-C3
CPUID signature:100F43
Family:16 (010h)
Model: 4 (04h)
Stepping: 3 (03h)

Cache: L1 data L1 instruction L2 L3
Size: 4 x 64 KB 4 x 64 KB 4 x 512 KB 6 MB
Associativity: 2-way set
2-way set
16-way set
48-way set
Line size: 64 bytes 64 bytes 64 bytes 64 bytes
Lines per tag: 1 1 1 1
Instruction set extensionsAdditional instructions
MMX Advanced Bit manipulation
AMD extensions to MMX CLFLUSH
Extensions to 3DNow! CMPXCHG16B
Major featuresOther features
On-chip Floating Point Unit 100MHz multiplier control
64-bit / Intel 64 128-bit SSE instructions
NX bit/XD-bit 36-bit page-size extensions
PowerNow! / Cool'n'Quiet Advanced programmable interrupt controller
  Core multi-processing legacy mode
  Debugging extensions
  FXSAVE/FXRSTOR optimizations
  Hardware P-state control
  LAHF/SAHF support in 64-bit mode
  LOCK MOV CR0 means MOV CR8
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Misaligned SSE mode
  Model-specific registers
  OS visible workaround
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Physical address extensions
  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 Phenom II X4 955 (125W, rev. C3, BE)

Model Cores /
Frequency Turbo
TDP Features Price  
AMD Phenom II X4 family, Socket AM2+ / Socket AM3
   Phenom II X4 955 (125W, rev. C2)4 / 43.2 GHz 2 MB6 MB125WUnlock >
   Phenom II X4 955 (125W, rev. C3)4 / 43.2 GHz 2 MB6 MB125WUnlock >
   Phenom II X4 955 (95W, rev. C3, non-BE)4 / 43.2 GHz 2 MB6 MB95WUnlock >
   Phenom II X4 B974 / 43.2 GHz 2 MB6 MB95WUnlock >
   Phenom II X4 955 (125W, rev. C2, BE)4 / 43.2 GHz 2 MB6 MB125WUnlock >
   Phenom II X4 955 (125W, rev. C3, BE)4 / 43.2 GHz 2 MB6 MB125WUnlock  
   Phenom II X4 960T4 / 43 GHz3.4 GHz2 MB6 MB95WTBT, Unlock >
   Phenom II X4 B994 / 43.3 GHz 2 MB6 MB95WUnlock >
   Phenom II X4 965 (125W, non-BE)4 / 43.4 GHz 2 MB6 MB125WUnlock >
   Phenom II X4 965 (140W, BE)4 / 43.4 GHz 2 MB6 MB140WUnlock$81>
   Phenom II X4 965 (125W, BE)4 / 43.4 GHz 2 MB6 MB125WUnlock >
   Phenom II X4 970 (rev. C3)4 / 43.5 GHz 2 MB6 MB125WUnlock$142>
   Phenom II X4 970 (rev. E0)4 / 43.5 GHz 2 MB6 MB125WUnlock >
   Phenom II X4 9754 / 43.6 GHz 2 MB6 MB125WUnlock$153>
   Phenom II X4 9804 / 43.7 GHz 2 MB6 MB125WUnlock$163>
AMD Phenom II X4 family, K10 micro-architecture, Other sockets
   Phenom II X4 9204 / 42.8 GHz 2 MB6 MB140.8WUnlock >
   Phenom II X4 9404 / 43 GHz 2 MB6 MB139.6WUnlock >
Other families, K10 micro-architecture, Socket AM2+ / Socket AM3
   Athlon II 170u1 / 12 GHz 1 MB 20WUnlock >
   Athlon X2 5200+ (0.045 micron)2 / 22.3 GHz 1 MB 65WUnlock >
   Sempron X2 1902 / 22.5 GHz 1 MB 45WUnlock >
   Athlon II X2 2802 / 23.6 GHz 2 MB 65WUnlock$49>
   Phenom II X2 570 BE2 / 23.5 GHz 1 MB6 MB80WUnlock >
   Phenom II X3 B773 / 33.2 GHz 1.5 MB6 MB95WUnlock >
   Athlon II X3 4603 / 33.4 GHz 1.5 MB 95WUnlock$69>
 • 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 Phenom II X4 955 (125W, rev. C3, BE)
 • Click on the >  icon to compare any CPU in the table with the AMD Phenom II X4 955 (125W, rev. C3, BE) (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:
TBT - Dynamic Acceleration / Turbo Boost
Unlock - Unlocked multiplier

Pictures (8)

2009-12-31 16:06:57
Posted by: gshv

2009-12-31 16:07:38
Posted by: gshv

2009-12-31 16:08:01
Posted by: gshv

Phenom II X4 955 Black Edition box (stepping C3)
2009-12-31 16:12:42
Posted by: gshv

The processor is shipped in a newly designed box. This box is smaller than the older Phenom II boxes, and has just enough space to fit the CPU, heatsink and installation instructions.
Phenom II X4 955 Black Edition box (stepping C3)
2009-12-31 16:14:10
Posted by: gshv

Phenom II X4 955 Black Edition CPU
2009-12-31 16:18:59
Posted by: gshv

Stepping code CACAC AC. The processor was manufactured in the first half of November 2009.
Phenom II X4 955 Black Edition CPU
2014-03-13 09:00:34
Posted by: Tim Martin

2014-05-30 16:59:15
Posted by: P.S

Comments (4)

You're welcome to post suggestions, corrections, your own personal AMD Phenom II X4 955 review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.

AMD Phenom II X4 955 Black in GA-M52S-S3P Rev 2

2010-06-12 02:30:58
Posted by: Ray White

Works fine, system can't ID the CPU & clocks at only 2500MHz BUT still goes like stink...

95w or 125w ???

2012-06-05 08:06:15
Posted by: Steve

the title of this page reads:
AMD Phenom II X4 955 (95W, rev. C3, BE)....
but when you look at the page it says the TDP is 125w, like every other 955.
is there actually a phenom II x4 955 that has a TDP of 95w and how would one identify it?

Response: The title was wrong, this processor has 125W. The title was corrected. Phenom II X4 955 with 95W TDP is HDX955WFK4DGM, however it's not a Black Edition.

Wrong description

2013-02-16 06:32:11
Posted by: Aachi

On AMD website you can read that HDZ955FBGMBOX is in Stepping C2.
It's also not Black Edition, so the notes in description are wrong.

Response: Information on the "shop AMD" website is incorrect. For correct information please check products database on AMD website, or look at the pictures / CPUID on this page.


2013-02-27 20:23:22
Posted by: Mirko

HDZ955FBK4DGM/ HDZ955FBGMBOX are the same thing? I should buy, but on ASRock website just tells me the code and not the DGM BOX, for compatibility with my motherboard. But looking at other cards on ASRock website as always, the BOX will not give up no .... What should I do?? Many sellers tell me they have only the code BOX.

Response: Yes, it's the same processor.
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