Intel Core i7-8700K 6-Core 3.7GHz
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Intel Core i7-5960X 8-Core 3.0GHz
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Gaming Performance Comparison

Recommended System Requirements
Game Core i7-8700K 6-Core 3.7GHz Core i7-5960X 8-Core 3.0GHz
PlayerUnknowns Battlegrounds 51% 50%
Kingdom Come: Deliverance 45% 44%
Assassins Creed: Origins 45% 44%
Far Cry 5 27% 25%
Call of Duty: WWII 56% 55%
Grand Theft Auto VI 43% 42%
Sea of Thieves 50% 49%
Monster Hunter World 44% 42%
DRAGON BALL FighterZ 42% 41%
Dynasty Warriors 9 42% 41%

In terms of overall gaming performance, the Intel Core i7-8700K 6-Core 3.7GHz is very slightly better than the Intel Core i7-5960X 8-Core 3.0GHz 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 i7-8700K 6-Core was released over three years more recently than the Core i7-5960X 8-Core, and so the Core i7-8700K 6-Core is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Core i7-5960X 8-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 i7-5960X 8-Core has 2 more cores than the Core i7-8700K 6-Core. 8 cores is probably excessive if you mean to just run the latest games, as games are not yet able to harness this many cores. The cores in the Core i7-8700K 6-Core is more than enough for gaming purposes. However, if you intend on running a server with the Core i7-5960X 8-Core, it would seem to be a decent choice.

The Core i7-5960X 8-Core has 4 more threads than the Core i7-8700K 6-Core. Both the Core i7-8700K 6-Core and the Core i7-5960X 8-Core use hyperthreading. The Core i7-8700K 6-Core has 2 logical threads per physical core and the Core i7-5960X 8-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 i7-8700K 6-Core and Core i7-5960X 8-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 i7-8700K 6-Core has a 0.7 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 probably a good indicator that the Core i7-5960X 8-Core is superior.

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 i7-8700K 6-Core has a 45 Watt lower Maximum TDP than the Core i7-5960X 8-Core, and was created with a 8 nm smaller manufacturing technology. What this means is the Core i7-8700K 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).

Can I Run It

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CPU Core Details

CPU CodenameCoffee LakeHaswell-E
MoBo SocketLGA 1151Socket 2011-3 / R3 / LGA2011-3
Notebook CPUnono
Release Date05 Oct 201729 Aug 2014
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores6vs8
CPU Threads12vs16
Clock Speed3.7 GHzvs3 GHz
Turbo Frequency4.3 GHzvs3.5 GHz
Max TDP95 Wvs140 W
Lithography14 nmvs22 nm
Bit Width64 Bitvs64 Bit
Max Temperature-vs67°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs512 KB
L2 Cache Size-vs2048 KB
L3 Cache Size12 MBvs20 MB
Max Memory Size-vs64 GB
Memory Channels-vs4
ECC Memory Supportnovsno
Comparison

CPU Graphics

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Comparison

CPU Package and Version Specifications

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Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Core i7-8700K 6-Core 3.7GHz is a high-end CPU based on the 14nm Coffee Lake micro architecture. It offers 6 physical cores (12 logical), initially clocked at 3.7GHz, which may go up to 4.3GHz using 6 cores with Turbo Boost, or up to 4.7GHz boost clock on a single core. The i7-8700K has 12MB of L3 Cache. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated and the processor has its multiplier unlocked. This Core i7-8700K CPU offers the fastest gaming performance of any Intel CPU as of 2017, 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. [Please be aware that GD data is constantly refined as more information and reports are made available.]Core i7-5960X 8-Core 3.0GHz is an extreme processor based on the 22nm, Haswell architecture.

It offers 8 Physical Cores (16 Logical), initially clocked at 3.0GHz, which may go up to 3.5GHz and 20MB of L3 Cache.
Among its many features, HyperThreading, Turbo Boost and Virtualization are activated and the processor has multiplier unlocked, meaning it can be overclocked easily.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 140W.

It proves to be over 10% faster than Core i7-4960K. Its performance is exceptionally good and enough for even the most demanding applications.