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AMD Opteron 156 - OSA156DAA5BN (OSA156BNBOX)

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Same socket

AMD Opteron 156 is the fastest single-core processor for socket 939. Clocked internally at 3 GHz, the OSA156DAA5BN is 600 MHz, or 20% faster than the fastest single-core socket 939 Athlon 64 CPU, and 400 MHz (15%) faster than dual-core Athlon 64 FX FX-60 or Opteron 185. This makes it a perfect, albeit expensive, upgrade for old socket 939 motherboards when the best single-core performance is required. When upgrading a general purpose motherboard always make sure that the motherboard supports this Opteron processor.

AMD Opteron 156 specifications

General information
TypeCPU / Microprocessor
Market segmentServer
FamilyAMD Opteron
Model number  ? 156
CPU part numbers
  • OSA156DAA5BN is an OEM/tray microprocessor
  • OSA156BNBOX is a boxed microprocessor
Stepping codeCAB1E
Frequency  ? 3000 MHz
Package939-pin lidded organic micro-PGA
SocketSocket 939
Architecture / Microarchitecture
Processor core  ? San Diego
Core stepping  ? E4
Manufacturing process0.09 micron SOI
Data width64 bit
The number of cores1
The number of threads1
Floating Point UnitIntegrated
Level 1 cache size  ? 64 KB 2-way associative instruction cache
64 KB 2-way associative data cache
Level 2 cache size  ? 1 MB exclusive 16-way associative cache
Physical memory1 TB
Virtual memory256 TB
  • 12 (integer)
  • 17 (floating point)
  • MMX instructions
  • 3DNow! technology
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • AMD64 / AMD 64-bit technology  ? 
  • EVP / Enhanced Virus Protection  ? 
  • SSE3 / Streaming SIMD Extensions 3
Low power features
  • Halt mode
  • Stop Grant mode  ? 
  • PowerNow!
Integrated peripherals / components
Integrated graphicsNone
Memory controller
  • The number of controllers: 1
    Memory channels: 2
    Supported memory: DDR
Other peripheralsHyperTransport technology with one 16-bit link (up to 1000 MHz)
Electrical / Thermal parameters
V core  ? 1.3V / 1.35V
Minimum operating temperature0°C
Maximum operating temperature  ? 49°C - 65°C
Thermal Design Power  ? 104 Watt

Detailed side-by-side comparison

For detailed comparision of the AMD Opteron 156 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: OSA156DAA5BN, AMD Opteron 3GHz, San Diego Socket 939


Q: I have an AMD Opteron 156 microprocessor. Can I upgrade it?
A: Probably yes. Processor compatibility is determined by your motherboard. Please check website for CPU support list for your board.

Opteron 156 Overclocking

Sorry, overclocking information is not available at this time.

CPU ID information for the Opteron 156

We don't have CPU ID information for the AMD Opteron 156 CPU in our database. If you have this processor please use our CPUID tool to submit CPUID information. During submission, please specify family name, OSA156DAA5BN part number, and, most importantly, make the CPUID record public. To search or browse all public CPUID submissions please visit CPUID database.

CPUs, related to AMD Opteron 156

Model Cores /
Frequency L2
TDP Features  
AMD Opteron family, Socket 939
   Opteron 144 (rev. E4, socket 939)1 / 11.8 GHz1 MB167W>
   Opteron 146 (rev. E4, socket 939)1 / 12 GHz1 MB167W>
   Opteron 148 (rev. E4, socket 939)1 / 12.2 GHz1 MB185.3W>
   Opteron 150 (rev. E4, socket 939)1 / 12.4 GHz1 MB185.3W>
   Opteron 152 (rev. E4, socket 939)1 / 12.6 GHz1 MB1104W>
   Opteron 1541 / 12.8 GHz1 MB1104W>
   Opteron 1561 / 13 GHz1 MB1104W 
AMD Opteron family, K8 micro-architecture, Other sockets
   Opteron 852 (68W)1 / 12.6 GHz1 MB868W>
   Opteron 8521 / 12.6 GHz1 MB892.6W>
   Opteron 254 (68W)1 / 12.8 GHz1 MB268W>
   Opteron 2541 / 12.8 GHz1 MB292.6W>
   Opteron 854 (68W)1 / 12.8 GHz1 MB868W>
   Opteron 8541 / 12.8 GHz1 MB892.6W>
   Opteron 2561 / 13 GHz1 MB292.6W>
   Opteron 8561 / 13 GHz1 MB892.6W>
Other families, K8 micro-architecture, Socket 939
   Opteron 1652 / 21.8 GHz2 MB1110W>
   Opteron 1702 / 22 GHz2 MB1110W>
   Opteron 1752 / 22.2 GHz2 MB1110W>
   Opteron 1802 / 22.4 GHz2 MB1110W>
   Opteron 1852 / 22.6 GHz2 MB1110W>
   Opteron 1902 / 22.8 GHz2 MB1 >
 • 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 Opteron 156
 • Click on the >  icon to compare any CPU in the table with the AMD Opteron 156 (Javascript required).
 • List of related CPUs is not complete.

Pictures (1)

2010-04-02 07:34:31
Posted by: Matthew 'endo' Enderby.

Comments (3)

You're welcome to post suggestions, corrections, your own personal AMD Opteron 156 review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.


2010-04-02 07:39:03
Posted by: Matthew 'endo' Enderby.

I have only come across one of these units in the flesh, which I found on eBay in Australia a few years back. As these CPU's were only sold as OEM units and a very limited run of retail production they are rare as hens teeth nowdays. I have just decommissioned this CPU from my aging Socket 939 platform desktop PC and will be putting it up on eBay once again, and it will be interesting to see what price it fetches.


2010-04-02 07:45:53
Posted by: Matthew 'endo' Enderby.


2010-04-02 07:47:56
Posted by: Matthew 'endo' Enderby.

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