AMD Opteron microprocessor family

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Athlon MP
  • » K7 microarchitecture
  • » 0.13 and 0.18 micron
  • » Server CPU
  • » Up to 2.13 GHz
  • » Up to 512 KB L2 cache
  • » 200 and 266 MHz FSB
  • » 32-bit
  • » SSE instructions
  • » 2-way processing
Socket A (462)
Opteron
  • » K8 microarchitecture
  • » 0.09 and 0.13 micron
  • » Server CPU
  • » Single core
  • » Up to 3 GHz
  • » 1 MB L2 cache
  • » Up to 8-way processing
  • » 64-bit
  • » SSE2, SSE3
Socket 939
Socket 940
Athlon 64
  • » Desktop CPU
  • » 1-way processing
Dual-Core Opteron
  • » K8 microarchitecture
  • » 0.09 micron
  • » Server CPU
  • » Dual core
  • » Up to 2.8 GHz
  • » 2 MB L2 cache
  • » Up to 8-way processing
  • » 64-bit
  • » SSE2, SSE3
Socket 939
Socket 940
AMD Opteron is a family of server-class processors based on K8 architecture. Opteron family was introduced in April 22, 2003, before any other processors in AMD K8 family. All Opteron processors released at that time were socket 940 only and required motherboards with expensive registered RAM. The Opterons had single-channel DDR memory controller and three HyperTransport links. The processors also included AMD 64-bit technology, supported SSE and SSE2 instructions, and had large 1MB level 2 cache. First Opteron processors were manufactured using 0.13 micron technology - same technology was used for the latest K7 processors. Though the Opterons were running at lower frequencies than Athlon XP processors, their Thermal Design Power (TDP) was higher. TDP was slightly lowered with the introduction of 0.09 micron Opteron CPUs in 2005. These processors added support for SSE3 instructions and increased maximum frequency of HyperTransports links from 800 MHz to 1 GHz. Some uni-processor Opterons were also manufactured for socket 939. These microprocessors were essentially fast Athlon 64 processors - they could work with less expensive unbuffered RAM and had only one Hypertransport link.

All Opteron processors were manufactured in three different versions:

  • Processors for uni-processor systems
  • Processors for dual-processor systems
  • Processors for systems supporting up to 8 processors

To distinguish between different Opteron versions AMD used Opteron model numbers. Each Opteron processor had three-digit model number. The first digit (1, 2 or 8) specifies processor scalability, i.e. how many processors can be used in one system. A number, formed from the second and third digits, is used to specify relative processor performance. This number is greater for faster Opteron processors, and it can be used to compare processors with different scalability. For example, Opteron 840 is slower than Opteron 142 when used in a single-processor system.

Production parts

AMD Opteron 148 - OSA148DAA5BN (OSA148BNBOX)
Uni-processor Opterons were released for both socket 940 and socket 939 platforms. Socket 939 1xx CPUs didn't have tree HyperTransport links, and were very similar to Athlon 64 processors. For example, with the exception of hardware and software thermal control features, this AMD Opteron 148 has exactly the same features and performance as Athlon 64 3700+ ADA3700DAA5BN CPU. Opteron 150 is comparable to Athlon 64 4000+ (ADA4000DAA5BN). Opterons 144 and 146 don't have exact matches in Athlon 64 family.
AMD Opteron 150 - OSA150DAA5BN (OSA150BNBOX)
2.4 GHz
1 MB L2 cache
Socket 939
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 240 - OSADA240CCO5
1.4 GHz
1 MB L2 cache
940-pin ceramic microPGA
Socket 940

Part numbers of pre-release versions of Opteron 240 and 242 microprocessors were different from production processors. Standard-power Opterons have part numbers starting from "OSA<model_number>...". This part has an extra "DA" between "OSA" and model number. "DA" letters could be a part definition that describes core stepping and other core features. In the final part naming convention these letters were moved from almost beginning of the part number to the end.
AMD Opteron 240 - OSA240CCO5AH
1.4 GHz
1 MB L2 cache
Socket 940
AMD Opteron 242 - OSADA242CCO5
1.6 GHz
1 MB L2 cache
940-pin ceramic microPGA
Socket 940

This OSADA242CCO5 processor has very early stepping AAABB and it's very likely to have core revision B0. The processor was released in December 2002, that is three months before official introduction of Opteron family.
AMD Opteron 242 - OSA242CCO5AH
1.6 GHz
1 MB L2 cache
940-pin ceramic microPGA
AMD Opteron 244 - OSA244CCO5AH
1.8 GHz
1 MB L2 cache
940-pin ceramic microPGA
Socket 940
AMD Opteron 244 - OSA244CEP5AU (OSA244AUBOX / OSA244AUWOF)
1.8 GHz
1 MB L2 cache
940-pin ceramic micro-PGA
Socket 940
AMD Opteron 840 - OSA840CCO5AI
1.4 GHz
1 MB L2 cache
940-pin micro-PGA
Socket 940
AMD Opteron 842 - OSA842CCO5AI
1.6 GHz
1 MB L2 cache
940-pin micro-PGA
Socket 940
AMD Opteron 848 - OSA848CEP5AM
2.2 GHz
1 MB L2 cache
940-pin micro-PGA
Socket 940
AMD Opteron 850 HE - OSK850FAA5BM (OSK850BMWOF)
2.4 GHz
1 MB L2 cache
940-pin micro-PGA
Socket 940

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At a glance

Type:
64-bit microprocessor
Introduction:
Apr 22, 2003
Technology (micron):
0.09, 0.13
Frequency (GHz):
1.4 - 3
L2 cache size (MB):
1
Multiprocessing:
1 - 8