Intel Xeon E5645 vs Intel Xeon X5677
Physical Specifications
| Socket | Intel Socket 1366 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 32 nm | 32 nm |
| Transistors | 1,170 million | 1,170 million |
| Die size | 239 mm² | 239 mm² |
| Package | FC-LGA10 | FC-LGA10 |
Performance
| Frequency | 2.4 GHz | 3.466 GHz |
|---|---|---|
| Turbo clock | up to 2.666 GHz | up to 3.733 GHz |
| Base clock | 133 MHz | 133 MHz |
| Multiplier | 18.0x | 26.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.35 V | 1.35 V |
| TDP | 80 W | 130 W |
Architecture Details
| Vertical Segment | Server/Workstation | Server/Workstation |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Mar 16th, 2010 | Mar 16th, 2010 |
| Codename | Westmere-EP | Westmere-EP |
| Generation | Xeon | Xeon |
| Part | SLBWZ | SLBV9 |
| Memory support | DDR3 Triple-channel | DDR3 Triple-channel |
| ECC memory | Yes | Yes |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 6 | 4 |
|---|---|---|
| Total Threads | 12 | 8 |
| SMP # CPUs | 2 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 64K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 256K (per core) | 256K (per core) |
| Cache L3 | 12MB (shared) | 12MB (shared) |
Features & Technologies
| 5.86GT/s QPI | Yes | — |
|---|---|---|
| 6.4GT/s QPI | — | Yes |
| AES-NI | Yes | 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-x | Yes | Yes |
| XD-Bit | Yes | Yes |
