Intel Xeon E6540 vs Intel Xeon E7520: comparison
Comparison of Intel Xeon E6540 and Intel Xeon E7520: key differences and a full specification table.
Key differences
Intel Xeon E6540 has more cores (6 vs 4), more threads (12 vs 8), a higher base clock (2 GHz vs 1.87 GHz) and a higher maximum clock (2.27 GHz vs 1.87 GHz).
At the same time, Intel Xeon E7520 has a lower TDP (95 W vs 105 W).
Both processors match on: L3 cache (18 MB), process node (45 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 E6540 | Intel Xeon E7520 |
|---|---|---|
| Cores / threads | 6 / 12 | 4 / 8 |
| Max boost clock | 2.27 GHz | 1.87 GHz |
| L3 cache | 18 MB | 18 MB |
| TDP | 105 W | 95 W |
| Process | 45 nm | 45 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 E6540 | Intel Xeon E7520 |
|---|---|---|
| General | ||
| Model | E6540 | E7520 |
| Codename | Nehalem EX | Nehalem EX |
| Segment | Server | Server |
| Product line | Устаревшие процессоры Intel Xeon | Устаревшие процессоры Intel Xeon |
| Process | 45 nm | 45 nm |
| Launch date | Q1 2010 | Q1 2010 |
| Status | Discontinued | Discontinued |
| Expected discontinuance | Q4 2012 | Q4 2012 |
| Servicing status | End of Servicing Lifetime | End of Servicing Lifetime |
| Embedded options available | No | No |
| CPU | ||
| Cores | 6 | 4 |
| Threads | 12 | 8 |
| Multithreading (SMT/HT) | Yes | Yes |
| Base clock | 2 GHz | 1.87 GHz |
| Max boost clock | 2.27 GHz | 1.87 GHz |
| L3 cache | 18 MB | 18 MB |
| Bus speed | 6.4 GT/s | 4.8 GT/s |
| TDP | 105 W | 95 W |
| Turbo Boost | Yes (1) | — |
| 64-bit support | Yes | Yes |
| Package and thermal | ||
| Sockets supported | FCLGA1567 | FCLGA1567 |
| TCASE | — | 70 °C |
| Security and virtualization | ||
| Virtualization (VT-x / AMD-V) | Yes | Yes |
| Extended Page Tables (EPT) | Yes | Yes |
| Execute Disable Bit | Yes | Yes |
| Technologies | ||
| Enhanced SpeedStep | Yes | Yes |