Intel Core i7-720QM vs Intel Core i7-820QM: comparison
Comparison of Intel Core i7-720QM and Intel Core i7-820QM: key differences and a full specification table.
Key differences
Intel Core i7-820QM has a higher base clock (1.73 GHz vs 1.6 GHz), a higher maximum clock (3.06 GHz vs 2.8 GHz) and a larger L3 cache (8 MB vs 6 MB).
Both processors match on: core count (4), thread count (8), TDP (45 W), process node (45 nm), maximum memory size (8 GB), memory channels (2), PCIe version (2).
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 Core i7-720QM | Intel Core i7-820QM |
|---|---|---|
| Cores / threads | 4 / 8 | 4 / 8 |
| Max boost clock | 2.8 GHz | 3.06 GHz |
| L3 cache | 6 MB | 8 MB |
| TDP | 45 W | 45 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 Core i7-720QM | Intel Core i7-820QM |
|---|---|---|
| General | ||
| Model | i7-720QM | i7-820QM |
| Codename | Clarksfield | Clarksfield |
| Segment | Mobile | Mobile |
| Product line | Legacy Intel Core Processors | Legacy Intel Core Processors |
| Process | 45 nm | 45 nm |
| Launch date | Q3 2009 | Q3 2009 |
| Status | Discontinued | Discontinued |
| Servicing status | End of Servicing Updates | End of Servicing Updates |
| Embedded options available | No | No |
| CPU | ||
| Cores | 4 | 4 |
| Threads | 8 | 8 |
| Multithreading (SMT/HT) | Yes | Yes |
| Base clock | 1.6 GHz | 1.73 GHz |
| Max boost clock | 2.8 GHz | 3.06 GHz |
| L3 cache | 6 MB | 8 MB |
| Bus speed | 2.5 GT/s | 2.5 GT/s |
| TDP | 45 W | 45 W |
| Turbo Boost | Yes (1) | Yes (1) |
| 64-bit support | Yes | Yes |
| Instruction set width | 64 bit | 64 bit |
| Instruction set extensions | SSE4.2 | SSE4.2 |
| Memory | ||
| Max memory size | 8 GB | 8 GB |
| Memory types | DDR3 | DDR3 |
| Memory channels | 2 | 2 |
| Max memory bandwidth | 21 GB/s | 21 GB/s |
| ECC memory supported | No | No |
| Physical address extensions | 36-bit | 36-bit |
| I/O and interfaces | ||
| PCI Express revision | 2 | 2 |
| PCI Express lanes | 16 | 16 |
| PCI Express configurations | 1x16, 2x8 | 1x16, 2x8 |
| Package and thermal | ||
| Sockets supported | PGA988 | PGA988 |
| Max CPU configuration | 1 | 1 |
| Package size | 37.5mm x 37.5mm | 37.5mm x 37.5mm |
| TJUNCTION | 100 °C | 100 °C |
| Die size | 296 mm² | 296 mm² |
| Transistors (millions) | 774 million | 774 million |
| 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 | No | No |
| Execute Disable Bit | Yes | Yes |
| vPro Eligibility | Intel vPro Platform | Intel vPro Platform |
| Technologies | ||
| Enhanced SpeedStep | Yes | Yes |
| Idle States | Yes | Yes |
| Thermal Monitoring Technologies | Yes | Yes |