AMD Opteron 6276 vs Intel Xeon E5645
Physical Specifications
| Socket | AMD Socket G34 | Intel Socket 1366 |
|---|---|---|
| Process size | 32 nm | 32 nm |
| Transistors | 2,400 million | 1,170 million |
| Die size | 316 mm² | 239 mm² |
| Package | — | FC-LGA10 |
| Foundry | — | Intel |
Performance
| Frequency | 2.3 GHz | 2.4 GHz |
|---|---|---|
| Turbo clock | up to 3.2 GHz | up to 2.666 GHz |
| Base clock | 200 MHz | 133 MHz |
| Multiplier | 11.5x | 18.0x |
| Multiplier unlocked | No | No |
| TDP | 115 W | 80 W |
| Voltage | — | 1.35 V |
Architecture Details
| Vertical Segment | Server/Workstation | Server/Workstation |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Nov 14th, 2011 | Mar 16th, 2010 |
| Codename | Interlagos | Westmere-EP |
| Generation | Opteron | Xeon |
| Part | OS6276WKTGGGU | SLBWZ |
| Memory support | DDR3 | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 16 | 6 |
|---|---|---|
| Total Threads | 16 | 12 |
| SMP # CPUs | 4 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 768K | 64K (per core) |
|---|---|---|
| Cache L2 | 16MB | 256K (per core) |
| Cache L3 | 8MB (per die) | 12MB (shared) |
Notes
| 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). 8MB L3 cache shared per eight cores (per die). 14MB total L3 cache available when using HT Assist. | — |
|---|
Features & Technologies
| 5.86GT/s QPI | — | Yes |
|---|---|---|
| AES | Yes | — |
| AES-NI | — | Yes |
| AMD-V | Yes | — |
| AMD64 | Yes | — |
| AVX | Yes | — |
| CLMUL | Yes | — |
| CVT16 | Yes | — |
| EIST | — | Yes |
| EVP | Yes | — |
| FMA4 | Yes | — |
| HTT | — | Yes |
| Intel 64 | — | Yes |
| MMX | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.1 | Yes | — |
| SSE4.2 | Yes | Yes |
| SSE4A | Yes | — |
| SSSE3 | Yes | Yes |
| TXT | — | Yes |
| VT-x | — | Yes |
| XD-Bit | — | Yes |
| XOP | Yes | — |
