Key facts
Production status: End-of-life
Release date: 2011-11-14
Cores / Threads: 8 / 8
Base clock: 1600 MHz
Turbo clock: 2800 MHz
TDP: -
Process: 32 nm
Codename: Valencia
Generation: Opteron (Valencia)
All available specs
| Field | Value |
|---|---|
| name | Opteron 4256 EE |
| Socket | AMD Socket C32 |
| Foundry | GlobalFoundries |
| Process Size | 32 nm |
| Transistors | 1,200 million |
| Die Size | 315 mm² |
| Package | FC-LGA1207 |
| Market | Server/Workstation |
| Production Status | End-of-life |
| Release Date | Nov 14th, 2011 |
| Part# | OS4256HJU8KGU |
| Frequency | 1600 MHz |
| Turbo Clock | up to 2.8 GHz |
| Base Clock | 200 MHz |
| Multiplier | 8.0x |
| Multiplier Unlocked | No |
| Codename | Valencia |
| Generation | Opteron (Valencia) |
| Memory Support | DDR3 |
| ECC Memory | Yes |
| # of Cores | 8 |
| # of Threads | 8 |
| SMP # CPUs | 2 |
| Cache L1 | 384 KB |
| Cache L2 | 8 MB |
| Features | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4a, AMD64, AMD-V, AES, AVX, CLMUL, CVT16, EVP, FMA4, XOP, Turbo Core, HT3.0 |
| Notes | 16KB L1 data cache per core.64KB L1 instruction cache shared per two cores (per module).2MB L2 cache shared per two cores (per module).AMD's "ACP" or Average Core Power ratings exist to, "reflect the CPU power consumption running typical data center workloads" according to AMD. The number is a geometric mean of power consumed running TPC-C, SPECcpu2006, SPECjbb2005, and Stream. (Excerpt from AnandTech - "Testing the latest x86 rack servers for low power server CPUs" - Johan De Gelas, July 22, 2009) |
| Rated Speed | 1600 MT/s |
| Memory Bus | Dual-channel |
| Memory Bandwidth | 25.6 GB/s |
| tJMax | 64°C |
| Launch Price | $377 |
| PCI-Express | Gen 2 |
| Cache L3 | 8 MB (shared) |
| ACP | 32 W |
| HT Links | 2x 3200 MHz |
| NB/IMC Clock | 1600 MHz |