Athlon X4 845 vs i7-2820QM
Aggregate performance score
Core i7-2820QM outperforms Athlon X4 845 by a moderate 15% based on our aggregate benchmark results.
Primary details
Comparing Core i7-2820QM and Athlon X4 845 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1686 | 1771 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Core i7 | no data |
| Power efficiency | 5.80 | 3.48 |
| Architecture codename | Sandy Bridge (2011−2013) | Carrizo (2015−2018) |
| Release date | 3 January 2011 (13 years ago) | 2 February 2016 (8 years ago) |
| Launch price (MSRP) | $568 | no data |
Detailed specifications
Core i7-2820QM and Athlon X4 845 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) | 4 (Quad-Core) |
| Threads | 8 | 4 |
| Base clock speed | 2.3 GHz | 3.5 GHz |
| Boost clock speed | 3.4 GHz | 3.8 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 23 | no data |
| L1 cache | 64K (per core) | 320K |
| L2 cache | 256K (per core) | 2 MB |
| L3 cache | 8 MB (shared) | no data |
| Chip lithography | 32 nm | 28 nm |
| Die size | 216 mm2 | 250 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | no data | 74 °C |
| Number of transistors | 1,160 million | 3,100 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Core i7-2820QM and Athlon X4 845 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 (Uniprocessor) | 1 |
| Socket | FCBGA1224,FCPGA988,PPGA988 | FM2+ |
| Power consumption (TDP) | 45 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-2820QM and Athlon X4 845. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | no data |
| AES-NI | + | + |
| FMA | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| My WiFi | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | no data |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Core i7-2820QM and Athlon X4 845 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Identity Protection | + | - |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-2820QM and Athlon X4 845 are enumerated here.
| AMD-V | + | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-2820QM and Athlon X4 845. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1066, DDR3-1333, DDR3-1600 | DDR3-2133 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.598 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 3000 | no data |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.3 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-2820QM and Athlon X4 845 integrated GPUs.
| Number of displays supported | 2 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-2820QM and Athlon X4 845.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | 16 | 8 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Performance score | 2.77 | 2.40 |
| Recency | 3 January 2011 | 2 February 2016 |
| Threads | 8 | 4 |
| Chip lithography | 32 nm | 28 nm |
| Power consumption (TDP) | 45 Watt | 65 Watt |
i7-2820QM has a 15.4% higher aggregate performance score, 100% more threads, and 44.4% lower power consumption.
Athlon X4 845, on the other hand, has an age advantage of 5 years, and a 14.3% more advanced lithography process.
The Core i7-2820QM is our recommended choice as it beats the Athlon X4 845 in performance tests.
Be aware that Core i7-2820QM is a notebook processor while Athlon X4 845 is a desktop one.
Should you still have questions on choice between Core i7-2820QM and Athlon X4 845, ask them in Comments section, and we shall answer.
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