| Essentials | |
| Product Collection | Legacy Intel® Xeon® Processors |
| Code Name | Products formerly Westmere EP |
| Vertical Segment | Server |
| Processor Number | E5603 |
| Status | Discontinued |
| Launch Date | Q1’11 |
| Lithography | 32 nm |
| CPU Specifications | |
| Total Cores | 4 |
| Total Threads | 4 |
| Processor Base Frequency | 1.60 GHz |
| Cache | 4 MB Intel® Smart Cache |
| Bus Speed | 4.8 GT/s |
| No. of QPI Links | 2 |
| TDP | 80 W |
| Supplemental Information | |
| Embedded Options Available | No |
| Datasheet | View now |
| Memory Specifications | |
| Max Memory Size (dependent on memory type) | 288 GB |
| Memory Types | DDR3 800/1066 |
| Max # of Memory Channels | 3 |
| Max Memory Bandwidth | 25.6 GB/s |
| Physical Address Extensions | 40-bit |
| ECC Memory Supported | Yes |
| Package Specifications | |
| Sockets Supported | FCLGA1366 |
| Max CPU Configuration | 2 |
| Package Size | 42.5mm X 45mm |
| Advanced Technologies | |
| Intel® Turbo Boost Technology | No |
| Intel® Hyper-Threading Technology | No |
| 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 |
| Instruction Set | 64-bit |
| Instruction Set Extensions | Intel® SSE4.2 |
| Idle States | Yes |
| Enhanced Intel SpeedStep® Technology | Yes |
| Intel® Demand Based Switching | Yes |
| Thermal Monitoring Technologies | No |
| Security & Reliability | |
| Intel® AES New Instructions | Yes |
| Intel® Trusted Execution Technology | Yes |
| Execute Disable Bit | Yes |
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