Intel Xeon L5638 vs Intel Xeon L5640: comparison
Comparison of Intel Xeon L5638 and Intel Xeon L5640: key differences and a full specification table.
Key differences
Intel Xeon L5640 has a higher base clock (2.26 GHz vs 2 GHz) and a higher maximum clock (2.8 GHz vs 2.4 GHz).
Both processors match on: core count (6), thread count (12), TDP (60 W), process node (32 nm).
These are specification values: they show differences between the models but do not determine a performance winner. For a specific workload, rely on independent benchmarks.
Key specifications
| Parameter | Intel Xeon L5638 | Intel Xeon L5640 |
|---|---|---|
| Cores / threads | 6 / 12 | 6 / 12 |
| Max boost clock | 2.4 GHz | 2.8 GHz |
| L3 cache | — | 12 MB |
| TDP | 60 W | 60 W |
| Process | 32 nm | 32 nm |
Full specification table
Differing values are highlighted. This is not a better/worse rating: numbers from different architectures are not always comparable.
| Parameter | Intel Xeon L5638 | Intel Xeon L5640 |
|---|---|---|
| General | ||
| Model | L5638 | L5640 |
| Codename | Westmere EP | Westmere EP |
| Segment | Server | Server |
| Product line | Устаревшие процессоры Intel Xeon | Устаревшие процессоры Intel Xeon |
| Process | 32 nm | 32 nm |
| Launch date | Q1 2010 | Q1 2010 |
| Status | Discontinued | Discontinued |
| Servicing status | End of Servicing Lifetime | End of Servicing Lifetime |
| Embedded options available | Yes | No |
| Use conditions | Communications | — |
| CPU | ||
| Cores | 6 | 6 |
| Threads | 12 | 12 |
| Multithreading (SMT/HT) | Yes | Yes |
| Base clock | 2 GHz | 2.26 GHz |
| Max boost clock | 2.4 GHz | 2.8 GHz |
| L3 cache | — | 12 MB |
| Cache (level unspecified) | 12 MB | — |
| Bus speed | 5.86 GT/s | 5.86 GT/s |
| TDP | 60 W | 60 W |
| Turbo Boost | Yes (1) | Yes (1) |
| 64-bit support | Yes | Yes |
| Instruction set width | — | 64 bit |
| Instruction set extensions | — | SSE4.2 |
| QPI links | 2 | 2 |
| Memory | ||
| Max memory size | — | 288 GB |
| Memory types | — | DDR3 |
| Memory channels | — | 3 |
| Max memory bandwidth | — | 32 GB/s |
| ECC memory supported | — | Yes |
| Physical address extensions | — | 40-bit |
| Package and thermal | ||
| Sockets supported | FCLGA1366 | FCLGA1366 |
| Max CPU configuration | — | 2 |
| Package size | — | 42.5mm X 45mm |
| TCASE | 85 °C | 69.4 °C |
| Security and virtualization | ||
| Virtualization (VT-x / AMD-V) | Yes | Yes |
| Virtualization for Directed I/O (VT-d) | Yes | Yes |
| Extended Page Tables (EPT) | Yes | Yes |
| AES-NI | Yes | Yes |
| Execute Disable Bit | — | Yes |
| Intel Trusted Execution Technology | Yes | Yes |
| Technologies | ||
| Enhanced SpeedStep | — | Yes |
| Idle States | Yes | Yes |
| Thermal Monitoring Technologies | — | No |