Recommended System Requirements | ||
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Game | Core i7-8086K 6-Core 4.0GHz | Core i7-3970X 6-Core 3.50GHz |
In terms of overall gaming performance, the Intel Core i7-8086K 6-Core 4.0GHz is massively better than the Intel Core i7-3970X 6-Core 3.50GHz when it comes to running the latest games. This also means it will be less likely to bottleneck more powerful GPUs, allowing them to achieve more of their gaming performance potential.
The Core i7-8086K 6-Core was released over three years more recently than the Core i7-3970X 6-Core, and so the Core i7-8086K 6-Core is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Core i7-3970X 6-Core when running the latest games.
Both CPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings (assuming they are accompanied by equivalently powerful GPUs).
The Core i7-8086K 6-Core and the Core i7-3970X 6-Core both have 6 cores, which is not likely to be a limiting factor for gaming.
Both the Intel Core i7-8086K 6-Core 4.0GHz and the Intel Core i7-3970X 6-Core 3.50GHz have the same number of threads. Both the Core i7-8086K 6-Core and the Core i7-3970X 6-Core use hyperthreading. The Core i7-8086K 6-Core has 2 logical threads per physical core and the Core i7-3970X 6-Core has 2.
Multiple threads are useful for improving the performance of multi-threaded applications. Additional cores and their accompanying thread will always be beneficial for multi-threaded applications. Hyperthreading will be beneficial for applications optimized for it, but it may slow others down. For games, the number of threads is largely irrelevant, as long as you have at least 2 cores (preferably 4), and hyperthreading can sometimes even hit performance.
More important for gaming than the number of cores and threads is the clock rate. Problematically, unless the two CPUs are from the same family, this can only serve as a general guide and nothing like an exact comparison, because the clock cycles per instruction (CPI) will vary so much.
The Core i7-8086K 6-Core and Core i7-3970X 6-Core are not from the same family of CPUs, so their clock speeds are by no means directly comparable. Bear in mind, then, that while the Core i7-8086K 6-Core has a 0.5 GHz faster frequency, this is not always an indicator that it will be superior in performance, despite frequency being crucial when trying to avoid GPU bottlenecking. In this case, however, the difference is enough that it possibly indicates the superiority of the .
Aside from the clock rate, the next-most important CPU features for PC game performance are L2 and L3 cache size. Faster than RAM, the more cache available, the more data that can be stored for lightning-fast retrieval. L1 Cache is not usually an issue anymore for gaming, with most high-end CPUs eking out about the same L1 performance, and L2 is more important than L3 - but L3 is still important if you want to reach the highest levels of performance. Bear in mind that although it is better to have a larger cache, the larger it is, the higher the latency, so a balance has to be struck.
The maximum Thermal Design Power is the power in Watts that the CPU will consume in the worst case scenario. The lithography is the semiconductor manufacturing technology being used to create the CPU - the smaller this is, the more transistors that can be fit into the CPU, and the closer the connections. For both the lithography and the TDP, it is the lower the better, because a lower number means a lower amount of power is necessary to run the CPU, and consequently a lower amount of heat is produced.
The Core i7-8086K 6-Core has a 55 Watt lower Maximum TDP than the Core i7-3970X 6-Core, and was created with a 18 nm smaller manufacturing technology. What this means is the Core i7-8086K 6-Core will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).
CPU Codename | Coffee-Lake S | Sandy Bridge-E | |||
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MoBo Socket | LGA 1151 | LGA 2011/Socket R | |||
Notebook CPU | no | no | |||
Release Date | 08 Jun 2018 | 01 Nov 2012 | |||
CPU Link | GD Link | GD Link | |||
Approved | ![]() | ![]() |
CPU Cores | 6 | ![]() | vs | ![]() | 6 |
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CPU Threads | 12 | ![]() | vs | ![]() | 12 |
Clock Speed | 4 GHz | ![]() | vs | 3.5 GHz | |
Turbo Frequency | 5.1 GHz | ![]() | vs | 4 GHz | |
Max TDP | 95 W | ![]() | vs | 150 W | |
Lithography | 14 nm | ![]() | vs | 32 nm | |
Bit Width | 64 Bit | ![]() | vs | ![]() | 64 Bit |
Max Temperature | - | vs | ![]() | 66.8°C | |
Virtualization Technology | no | vs | no | ||
Comparison |
L1 Cache Size | - | vs | ![]() | 384 KB | |
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L2 Cache Size | - | vs | ![]() | 1536 KB | |
L3 Cache Size | 12 MB | vs | ![]() | 15 MB | |
Max Memory Size | - | ![]() | vs | 64 GB | |
Max Memory Bandwidth | - | vs | ![]() | 51.2 GB/s | |
Memory Channels | - | ![]() | vs | ![]() | 4 |
ECC Memory Support | no | vs | no | ||
Comparison |
Graphics | |||||
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Base GPU Frequency | - | vs | - | ||
Max GPU Frequency | - | vs | - | ||
DirectX | - | vs | - | ||
Displays Supported | - | vs | - | ||
Comparison |
Package Size | - | vs | 52.5mm x 45.0mm | ||
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Revision | - | vs | - | ||
PCIe Revision | - | vs | ![]() | 2 | |
PCIe Configurations | - | vs | ![]() | 2 |
Performance Value | ![]() |
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Mini Review | The Core i7-8086K 6-Core 4.0GHz is a high-end CPU based on the 14nm Coffee Lake-S microarchitecture. The Intel Core i7-8086K was released to celebrate the 40th anniversary of Intel's first ever x86 processor, the Intel 8086. It offers 6 physical cores (12 logical), initially clocked at 4.0GHz, which may go up to 5.1GHz boost clock on a single core. The i7-8086K has 12MB of L3 Cache. Aside from clock speeds, the 8086K has identical specs to the Core i7-8700K. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated and the processor has its multiplier unlocked. This Core i7-8086K CPU offers the fastest gaming performance of any Intel CPU as of 2018, and will not be the bottleneck in any modern gaming PC. It will be able to play all modern games comfortably on high/ultra graphics performance without being a hindrance to the accompanying GPU. | Core i7-3970X 6-Core 3.5GHz is an extreme processor based on the 32nm, Sandy Bridge architecture. It offers 6 Physical Cores (12 Logical), initially clocked at 3.5GHz, which may go up to 4.0GHz and 15MB of L3 Cache. Among its many features, HyperThreading, Turbo Boost and Virtualization are activated and the processor has multiplier unlocked. The processor DOES NOT integrated any graphics. and has a rated board TDP of 130W. Compared to Core i7-3770K there's an overall 34% performance boost. Its performance is exceptionally good and enough for even the most demanding applications. |
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Intel Quick Sync Video | ![]() | ![]() | Intel Quick Sync Video | |||
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Intel InTru 3D | ![]() | ![]() | Intel InTru 3D | |||
Intel Insider | ![]() | ![]() | Intel Insider | |||
Intel Wireless Display | ![]() | ![]() | Intel Wireless Display | |||
Intel Flexible Display | ![]() | ![]() | Intel Flexible Display | |||
Intel Clear Video HD | ![]() | ![]() | Intel Clear Video HD | |||
Intel vPro | ![]() | ![]() | Intel vPro | |||
Intel Hyper-Threading | ![]() | ![]() | Intel Hyper-Threading | |||
Intel Virt. Tech. for Directed I/O | ![]() | ![]() | Intel Virt. Tech. for Directed I/O | |||
Intel Trusted Execution | ![]() | ![]() | Intel Trusted Execution | |||
AES New Instructions | ![]() | ![]() | AES New Instructions | |||
Intel Anti-Theft | ![]() | ![]() | Intel Anti-Theft | |||
Idle States | ![]() | ![]() | Idle States | |||
Intel SpeedStep | ![]() | ![]() | Intel SpeedStep | |||
Thermal Monitoring | ![]() | ![]() | Thermal Monitoring | |||
Execute Disable Bit | ![]() | ![]() | Execute Disable Bit | |||
Intel VT-x with EPT | ![]() | ![]() | Intel VT-x with EPT | |||
Embedded Options | ![]() | ![]() | Embedded Options |