Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Ryzen 7 3800X 8-Core 3.9GHz Core i7-8700 6-Core 3.2GHz
Red Dead Redemption 2 49% 31%
Call of Duty: Modern Warfare 62% 49%
Cyberpunk 2077 57% 42%
Star Wars: Jedi - Fallen Order 44% 24%
Halo: Reach 79% 72%
Borderlands 3 49% 31%
FIFA 20 64% 51%
eFootball PES 2020 58% 44%
Fortnite: Chapter 2 72% 62%
Detroit: Become Human 57% 41%

In terms of overall gaming performance, the AMD Ryzen 7 3800X 8-Core 3.9GHz is massively better than the Intel Core i7-8700 6-Core 3.2GHz 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 Ryzen 7 3800X was released over a year more recently than the Core i7-8700 6-Core, and so the Ryzen 7 3800X is likely to have better levels of support, and will be more optimized for 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 Ryzen 7 3800X has 2 more cores than the Core i7-8700 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 i7-8700 6-Core is more than enough for gaming purposes. However, if you intend on running a server with the Ryzen 7 3800X, it would seem to be a decent choice.

The Ryzen 7 3800X has 4 more threads than the Core i7-8700 6-Core. Both the Ryzen 7 3800X and the Core i7-8700 6-Core use hyperthreading. The Ryzen 7 3800X has 2 logical threads per physical core and the Core i7-8700 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 Ryzen 7 3800X and Core i7-8700 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 Ryzen 7 3800X 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 enough that it possibly indicates the superiority of the Ryzen 7 3800X.

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 Ryzen 7 3800X has a 2560 KB bigger L2 cache than the Core i7-8700 6-Core, which means that it, at worst, wins out in this area, and at best, will provide superior gaming performance and will work much better with high-end graphics cards.

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 i7-8700 6-Core has a 40 Watt lower Maximum TDP than the Ryzen 7 3800X. However, the Ryzen 7 3800X was created with a 7 nm smaller manufacturing technology. Overall, by taking both into account, the Core i7-8700 6-Core is likely the CPU with the lower heat production and power requirements, by quite a wide margin.

CPU Core Details

CPU CodenameZen 2Coffee Lake
MoBo SocketSocket AM4LGA 1151
Notebook CPUnono
Release Date07 Jul 201905 Oct 2017
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores8vs6
CPU Threads16vs12
Clock Speed3.9 GHzvs3.2 GHz
Turbo Frequency4.5 GHzvs4.6 GHz
Max TDP105 Wvs65 W
Lithography7 nmvs14 nm
Bit Width64 Bitvs64 Bit
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size512 KBvs-
L2 Cache Size4096 KBvs1536 KB
L3 Cache Size32 MBvs12 MB
Max Memory Size-vs-
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

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Displays Supported-vs-
Comparison

CPU Package and Version Specifications

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Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Ryzen 7 3800X 8-Core 3.9GHz is a high-end CPU based on AMD's 7nm Zen 2 microarchitecture. It offers 8 physical cores (16 logical), initially clocked at 3.9GHz, which may go up to 4.5GHz using Precision Boost. It has an unlocked multiplier, therefore, it can be overclocked using traditional methods. As an AMD 'X' CPU, the Ryzen 5 3800X can use eXtended Frequency Range (XFR) for automated overclocking. It has 32MB of L3 Cache. Level 3 cache is a static memory bank of a processor and it is used to feed it instructions. This processor also supports DDR4 based RAMs with maximum memory support of 64GB. It has a maximum Thermal Power Design of 105W. It is power efficient compared to competitor processors. Among its many features are Simultaneous Multithreading, Cool n Quiet, CoolCore Technology, Extended Frequency Range (XFR), Pure Power and Precision Boost are enabled.The Core i7-8700 6-Core 3.2GHz is a high-end CPU based on the 14nm Coffee Lake micro architecture. It offers 6 physical cores (12 logical), initially clocked at 3.2GHz, which may go up to 4.3GHz using 6 cores with Turbo Boost, or up to 4.6GHz boost clock on a single core. The i7-8700 has 12MB of L3 Cache. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated. This processor does not have multiplier unlocked. Therefore, you cannot overclock the Core i7-8700. This Core i7-8700 CPU offers excellent gaming performance 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.

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