Phenom II X3 P820 vs i7-3770K
Aggregate performance score
Core i7-3770K outperforms Phenom II X3 P820 by a whopping 517% based on our aggregate benchmark results.
Primary details
Comparing Core i7-3770K and Phenom II X3 P820 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1399 | 2740 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.67 | no data |
| Market segment | Desktop processor | Laptop |
| Series | Intel Core i7 (Desktop) | 3x AMD Phenom II |
| Power efficiency | 5.00 | 2.50 |
| Architecture codename | Ivy Bridge (2012−2013) | Champlain (2010−2011) |
| Release date | 29 April 2012 (12 years ago) | 12 May 2010 (14 years ago) |
| Launch price (MSRP) | $294 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i7-3770K and Phenom II X3 P820 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) | 3 (Tri-Core) |
| Threads | 8 | 3 |
| Base clock speed | 3.5 GHz | no data |
| Boost clock speed | 3.9 GHz | 1.8 GHz |
| Bus type | DMI | no data |
| Bus rate | 5 GT/s | 3600 MHz |
| Multiplier | 35 | no data |
| L1 cache | 64 KB (per core) | 384 KB |
| L2 cache | 256K (per core) | 1.5 MB |
| L3 cache | 8 MB (shared) | no data |
| Chip lithography | 22 nm | 45 nm |
| Die size | 160 mm2 | no data |
| Maximum core temperature | 67 °C | no data |
| Maximum case temperature (TCase) | 67 °C | no data |
| Number of transistors | 1,400 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i7-3770K and Phenom II X3 P820 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 | no data |
| Socket | FCLGA1155 | S1 |
| Power consumption (TDP) | 77 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-3770K and Phenom II X3 P820. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX | Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a) |
| AES-NI | + | - |
| AVX | + | - |
| VirusProtect | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| FDI | + | no data |
Security technologies
Core i7-3770K and Phenom II X3 P820 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| Identity Protection | + | - |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-3770K and Phenom II X3 P820 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 i7-3770K and Phenom II X3 P820. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 4000 | no data |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.15 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-3770K and Phenom II X3 P820 integrated GPUs.
| Number of displays supported | 3 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-3770K and Phenom II X3 P820.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | no data |
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.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Pros & cons summary
| Performance score | 4.07 | 0.66 |
| Recency | 29 April 2012 | 12 May 2010 |
| Physical cores | 4 | 3 |
| Threads | 8 | 3 |
| Chip lithography | 22 nm | 45 nm |
| Power consumption (TDP) | 77 Watt | 25 Watt |
i7-3770K has a 516.7% higher aggregate performance score, an age advantage of 1 year, 33.3% more physical cores and 166.7% more threads, and a 104.5% more advanced lithography process.
Phenom II X3 P820, on the other hand, has 208% lower power consumption.
The Core i7-3770K is our recommended choice as it beats the Phenom II X3 P820 in performance tests.
Note that Core i7-3770K is a desktop processor while Phenom II X3 P820 is a notebook one.
Should you still have questions on choice between Core i7-3770K and Phenom II X3 P820, ask them in Comments section, and we shall answer.
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