Intel Xeon E3-1280 vs Intel Xeon X5647
Physical Specifications
| Socket | Intel Socket 1155 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 32 nm | 32 nm |
| Transistors | 1,160 million | 1,170 million |
| Die size | 216 mm² | 239 mm² |
| Package | FC-LGA10 | FC-LGA10 |
Performance
| Frequency | 3.5 GHz | 2.933 GHz |
|---|---|---|
| Turbo clock | up to 3.9 GHz | up to 3.2 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 35.0x | 22.0x |
| Multiplier unlocked | No | No |
| TDP | 95 W | 130 W |
| Voltage | — | 1.35 V |
Architecture Details
| Vertical Segment | Server/Workstation | Server/Workstation |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Apr 3rd, 2011 | Feb 14th, 2011 |
| Codename | Sandy Bridge | Westmere-EP |
| Generation | Xeon E3 | Xeon |
| Part | SR00R | SLBZ7 |
| Memory support | DDR3 Dual-channel | DDR3 Triple-channel |
| ECC memory | Yes | Yes |
| PCI Express | Gen 3, 16 Lanes(CPU only) | Gen 2 |
Cores
| Total Cores | 4 | 4 |
|---|---|---|
| Total Threads | 8 | 8 |
| SMP # CPUs | 1 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 64K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 256K (per core) | 256K (per core) |
| Cache L3 | 8MB (shared) | 12MB (shared) |
Features & Technologies
| 5.86GT/s QPI | — | Yes |
|---|---|---|
| AES-NI | Yes | Yes |
| AVX | Yes | — |
| EIST | Yes | Yes |
| HTT | Yes | Yes |
| Intel 64 | Yes | Yes |
| MMX | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.2 | Yes | Yes |
| SSSE3 | Yes | Yes |
| TXT | Yes | Yes |
| VT-d | Yes | — |
| VT-x | Yes | Yes |
| XD bit | Yes | — |
| XD-Bit | — | Yes |
