| Specifications | ||
| Status | Launched | |
| Launch Date | Q1'09 | |
| Processor Number | X5550 | |
| # of Cores | 4 | |
| # of Threads | 8 | |
| Clock Speed | 2.66 GHz | |
| Max Turbo Frequency | 3.06 GHz | |
| Intel® Smart Cache | 8 MB | |
| Intel® QPI Speed | 6.4 GT/s | |
| # of QPI Links | 2 | |
| Instruction Set | 64-bit | |
| Embedded Options Available | No | |
| Lithography | 45 nm | |
| Max TDP | 95 W | |
| VID Voltage Range | 0.750V -1.350V | |
| Memory Types | DDR3-800/1066/1333 |
| # of Memory Channels | 3 |
| Max Memory Bandwidth | 32 GB/s |
| Physical Address Extensions | 40-bit |
| ECC Memory Supported | Yes |
| Max CPU Configuration | 2 |
| TCASE | 75°C |
| Package Size | 42.5mm x 45mm |
| Processing Die Size | 263 mm2 |
| # of Processing Die Transistors | 731 million |
| Sockets Supported | FCLGA1366 |
| Intel® Turbo Boost Technology | Yes |
| Intel® Hyper-Threading Technology | Yes |
| Intel® Virtualization Technology (VT-x) | Yes |
| Intel® Virtualization Technology for Directed I/O (VT-d) | Yes |
| Intel® VT-x with Extended Page Tables (EPT) | Yes |
| Intel® 64 | Yes |
| Idle States | Yes |
| Enhanced Intel SpeedStep® Technology | Yes |
| Intel® Demand Based Switching | Yes |
| Trusted Execution Technology | No |
| Execute Disable Bit | Yes |
