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AMD Opteron 4280 - OS4280WLU8KGU / OS4280WLU8KGUS / OS4280WLU8KGUWOF

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AMD Opteron 4280 specifications

General information
TypeCPU / Microprocessor
Market segmentServer
FamilyAMD Opteron 4200 series
Model number  ? 4280
CPU part numbers
  • OS4280WLU8KGU is an OEM/tray server microprocessor
  • OS4280WLU8KGUS is an order number for an OEM/tray embedded processor
  • OS4280WLU8KGUWOF is a boxed processor without fan/heatsink
Frequency  ? 2800 MHz
Turbo frequency3100 MHz (more than 4 cores)
3500 MHz (4 cores or less)
Bus speed  ? 3200 MHz HyperTransport links (6.4 GT/s)
Package1207-land organic Land Grid Array
SocketSocket C32
Introduction dateNovember 14, 2011
Price at introduction$255
Architecture / Microarchitecture
PlatformSan Marino
Processor core  ? Valencia
Core stepping  ? OR-B2
Manufacturing process0.032 micron SOI
Die size316mm2
Data width64 bit
The number of cores8
The number of threads8
Floating Point UnitIntegrated
Level 1 cache size  ? 4 x 64 KB 2-way associative shared instruction caches
8 x 16 KB 4-way associative data caches
Level 2 cache size  ? 4 x 2 MB 16-way associative shared exclusive caches
Level 3 cache size8 MB up to 64-way associative shared cache
MultiprocessingUp to 2 processors
  • MMX instructions
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSSE3 / Supplemental Streaming SIMD Extensions 3
  • SSE4 / SSE4.1 + SSE4.2 / Streaming SIMD Extensions 4  ? 
  • SSE4a  ? 
  • AES / Advanced Encryption Standard instructions
  • ABM / Advanced Bit Manipulation  ? 
  • AVX / Advanced Vector Extensions
  • FMA4 / 4-operand Fused Multiply-Add instructions
  • XOP / eXtended Operations instructions
  • AMD64 / AMD 64-bit technology  ? 
  • VT / Virtualization technology  ? 
  • EVP / Enhanced Virus Protection  ? 
  • Turbo Core technology
Low power features
  • AMD-P 2.0
  • Core C1, C1E, C6 and CC6 states
  • Package S3, S4 and S5 states
Integrated peripherals / components
Integrated graphicsNone
Memory controller
  • The number of controllers: 1
    Memory channels: 2
    Supported memory: DDR3
Other peripheralsHyperTransport 3.0 technology with 3 HT links
Electrical / Thermal parameters
Maximum operating temperature  ? 70.5°C
Average CPU Power75 Watt
Thermal Design Power  ? 95 Watt
Notes on AMD Opteron 4280
  • Also available as an embedded microprocessor
  • Memory controller supports UDDR3/RDDR3 up to DDR3-1600 memory, and ULV RDDR3 up to DDR3-1333 memory

Detailed side-by-side comparison

For detailed comparision of the AMD Opteron 4280 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: OS4280WLU8KGU, AMD Opteron 4200 series 2.8GHz, Valencia Socket C32

Historical price chart

The chart below shows official prices of AMD Opteron 4200 series 4240, 4280 and 4284 processors:

Historical official prices of Opteron 4200 series 4240, 4280 and 4284 processors


Q: Is it possible to upgrade my AMD Opteron 4280 CPU?
A: Probably yes. Processor compatibility is determined by your motherboard. Please see website for CPU support list for your board.

Opteron 4280 Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

AMD releases Opteron 6200 and 4200 CPUs
Nov 14, 2011: Earlier last week AMD announced "Ready Solutions for servers" initiative, which aims to provide large selection of compatible motherboards at the launch of Opteron 6200 series microprocessors with Interlagos core. Also last week, specifications of several HP Proliant servers were updated to include new Opterons, and Japanese Dell website started offering Opteron 6200 chips, along with 6100 processors, in PowerEdge servers.

Pre-order prices of AMD Opteron 3200, 4200 and 6200 processors
Oct 07, 2011: Earlier this week we published two stories with model numbers and partial specifications of Opteron 3200 and 4200 server processors. Today our reader John Wuorenmaa alerted us that these processors, as well as full Opteron 6200 line-up, are now available for pre-order at Bottom Line Telecommunications. What's more, Opteron 6200 line-up references two new processors, Opteron 6204 and 6262 HE.

AMD Opteron 4200 lineup revealed
Oct 04, 2011: In September AMD began shipments of next generation server processors with Interlagos core, based on Bulldozer micro-architecture. The CPUs, branded as Opteron 6200, will feature up to 16 cores, support quad-CPU configurations, and will be launched this quarter. Also in the 4th quarter, AMD is going to introduce Opteron 4200 "Valencia" chips, which are less expensive server parts for dual-processor systems.

CPU ID information for the Opteron 4280

We don't have CPU ID information for the AMD Opteron 4280 CPU in our database. If you have this processor please use our CPUID tool to submit CPUID information. During submission, please specify family name, OS4280WLU8KGU 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 4280

Model Cores /
Frequency Turbo
TDP Features Price  
AMD Opteron 4200 series family, Socket C32
   Opteron 42266 / 62.7 GHz3.1 GHz8 MB295W$125>
   Opteron 4256 EE8 / 81.6 GHz2.8 GHz8 MB235W$377>
   Opteron 4228 HE6 / 62.8 GHz3.6 GHz8 MB265W$255>
   Opteron 4230 HE6 / 62.9 GHz3.7 GHz8 MB265W$377>
   Opteron 42346 / 63.1 GHz3.5 GHz8 MB295W$174>
   Opteron 42386 / 63.3 GHz3.7 GHz8 MB295W$255>
   Opteron 42406 / 63.4 GHz3.8 GHz8 MB295W$316>
   Opteron 4274 HE8 / 82.5 GHz3.5 GHz8 MB265W$377>
   Opteron 4276 HE8 / 82.6 GHz3.6 GHz8 MB265W$455>
   Opteron 42808 / 82.8 GHz3.5 GHz8 MB295W$255 
   Opteron 42848 / 83 GHz3.7 GHz8 MB295W$316>
 • 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 4280
 • Click on the >  icon to compare any CPU in the table with the AMD Opteron 4280 (Javascript required).
 • The 'Price' column shows official AMD prices as of Apr 9, 2014. Prices for obsolete and tray-only processors are not provided.

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