Celeron N2808 vs Core i7-820QM
Primary details
Comparing Core i7-820QM and Celeron N2808 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2288 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Celeron |
| Architecture codename | Clarksfield (2009−2010) | Bay Trail-M (2013−2014) |
| Release date | 23 September 2009 (14 years ago) | 22 May 2014 (10 years ago) |
| Launch price (MSRP) | $546 | no data |
| Current price | $529 (1x MSRP) | no data |
Detailed specifications
Core i7-820QM and Celeron N2808 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 8 | 2 |
| Base clock speed | 1.73 GHz | 1.58 GHz |
| Boost clock speed | 3.06 GHz | 2.25 GHz |
| Bus support | 2500 MHz | no data |
| L1 cache | 64 KB (per core) | 56K (per core) |
| L2 cache | 256 KB (per core) | 512K (per core) |
| L3 cache | 8 MB (shared) | 0 KB |
| Chip lithography | 45 nm | 22 nm |
| Die size | 296 mm2 | no data |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | 774 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Core i7-820QM and Celeron N2808 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | FCPGA988,PGA988 | FCBGA1170 |
| Power consumption (TDP) | 45 Watt | 4.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-820QM and Celeron N2808. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | no data |
| AES-NI | - | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | no data |
| PAE | 36 Bit | no data |
| Smart Connect | no data | + |
| Status | Discontinued | Discontinued |
Security technologies
Core i7-820QM and Celeron N2808 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | + |
| Secure Key | no data | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-820QM and Celeron N2808 are enumerated here.
| VT-d | + | - |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-820QM and Celeron N2808. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1066, DDR3-1333 | DDR3 |
| Maximum memory size | 8 GB | 4 GB |
| Max memory channels | 2 | 1 |
| Maximum memory bandwidth | 21 GB/s | 10.66 GB/s |
| ECC memory support | - | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | None | Intel® HD Graphics for Intel Atom® Processor Z3700 Series |
| Quick Sync Video | no data | + |
| Graphics max frequency | no data | 792 MHz |
Graphics interfaces
Available interfaces and connections of Core i7-820QM and Celeron N2808 integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Core i7-820QM and Celeron N2808.
| PCIe version | 2 | 2.0 |
| PCI Express lanes | 16 | 4 |
| USB revision | no data | 3.0 and 2.0 |
| Total number of SATA ports | no data | 2 |
| Number of USB ports | no data | 5 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
Core i7-820QM outperforms Celeron N2808 by 248% in Passmark.
Pros & cons summary
| Recency | 23 September 2009 | 22 May 2014 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Chip lithography | 45 nm | 22 nm |
| Power consumption (TDP) | 45 Watt | 4 Watt |
We couldn't decide between Core i7-820QM and Celeron N2808. We've got no test results to judge.
Should you still have questions on choice between Core i7-820QM and Celeron N2808, ask them in Comments section, and we shall answer.
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