i7-6800K vs Ryzen 9 PRO 7945
Aggregate performance score
Ryzen 9 PRO 7945 outperforms Core i7-6800K by a whopping 345% based on our aggregate benchmark results.
Primary details
Comparing Ryzen 9 PRO 7945 and Core i7-6800K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 133 | 1000 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 1.64 |
| Market segment | Server | Desktop processor |
| Architecture codename | Raphael (2023−2024) | Broadwell-E (2016) |
| Release date | 13 June 2023 (1 year ago) | 31 May 2016 (8 years ago) |
| Launch price (MSRP) | no data | $345 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 PRO 7945 and Core i7-6800K 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 | 12 (Dodeca-Core) | 6 (Hexa-Core) |
| Threads | 24 | 12 |
| Base clock speed | 3.7 GHz | 3.4 GHz |
| Boost clock speed | 5.4 GHz | 3.8 GHz |
| L1 cache | 64 KB (per core) | 32 KB (per core) |
| L2 cache | 1 MB (per core) | 256 KB (per core) |
| L3 cache | 64 MB (shared) | 15 MB (shared) |
| Chip lithography | 5 nm | 14 nm |
| Die size | 2x 71 mm2 | no data |
| Maximum case temperature (TCase) | 47 °C | 72 °C |
| Number of transistors | 13,140 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Ryzen 9 PRO 7945 and Core i7-6800K 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 | AM5 | FCLGA2011 |
| Power consumption (TDP) | 65 Watt | 140 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 PRO 7945 and Core i7-6800K. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Smart Response | no data | + |
| Turbo Boost Max 3.0 | no data | + |
| Status | no data | Discontinued |
| Precision Boost 2 | + | no data |
Security technologies
Ryzen 9 PRO 7945 and Core i7-6800K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 PRO 7945 and Core i7-6800K 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 Ryzen 9 PRO 7945 and Core i7-6800K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 4 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon Graphics | no data |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 PRO 7945 and Core i7-6800K.
| PCIe version | 5.0 | 3.0 |
| PCI Express lanes | 24 | 28 |
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 | 31.03 | 6.98 |
| Recency | 13 June 2023 | 31 May 2016 |
| Physical cores | 12 | 6 |
| Threads | 24 | 12 |
| Chip lithography | 5 nm | 14 nm |
| Power consumption (TDP) | 65 Watt | 140 Watt |
Ryzen 9 PRO 7945 has a 344.6% higher aggregate performance score, an age advantage of 7 years, 100% more physical cores and 100% more threads, a 180% more advanced lithography process, and 115.4% lower power consumption.
The Ryzen 9 PRO 7945 is our recommended choice as it beats the Core i7-6800K in performance tests.
Be aware that Ryzen 9 PRO 7945 is a server/workstation processor while Core i7-6800K is a desktop one.
Should you still have questions on choice between Ryzen 9 PRO 7945 and Core i7-6800K, ask them in Comments section, and we shall answer.
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