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CPU Core Details

CPU Codename Zen 2 Zen+
MoBo Socket Socket AM4 Socket AM4
Notebook CPU no no
Release Date 07 Jul 2019 30 Apr 2018
CPU Link GD Link GD Link
Approved

CPU Technical Specifications

CPU Cores 8 8
CPU Threads 16 16
Clock Speed 3.9 GHz 3.7 GHz
Turbo Frequency 4.5GHz 4.3 GHz
Max TDP 105 W 95 W
Lithography 7 nm 12 nm
Bit Width 64 Bit 64 Bit
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 512 KB 512 KB
L2 Cache Size 4096 KB 4096 KB
L3 Cache Size 32 MB 16 MB
Memory Types
Max Memory Size 64 GB 64 GB
Memory Channels 4 4
ECC Memory Support no no

CPU Graphics

Integrated Graphics no no
Base GPU Frequency - -
Max GPU Frequency - -
DirectX - -
Displays Supported - -

CPU Mini Review

Mini Review The 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 AMD Ryzen 7 2700X 8-Core 3.7GHz is a high-end CPU based on the 12nm Zen+ microarchitecture. It offers 8 physical cores (16 threads), initially clocked at 3.7GHz base clock and 4.3GHz boost with an unlocked multiplier for overclocking, and 16MB of L3 Cache. Among its many features are Simultaneous Multithreading, Cool n Quiet, CoolCore Technology, Extended Frequency Range (XFX) 2.0, Pure Power and Precision Boost 2.0. This CPU is likely to offer exceptional computational 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.

Gaming Performance Comparison

In terms of overall gaming performance, the AMD Ryzen 7 3800X 8-Core 3.9GHz is massively better than the AMD Ryzen 7 2700X 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.

Both the Ryzen 7 3800X 8-Core 3.9GHz and the Ryzen 7 2700X were released at the same time, so are likely to be quite similar.

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 and the Ryzen 7 2700X both have 8 cores. Games are not yet able to harness this many cores, so it is probably excessive if you mean to just run the latest games; however, if you intend on running a server with this CPU, it would seem to be a decent choice.

Both the AMD Ryzen 7 3800X 8-Core 3.9GHz and the AMD Ryzen 7 2700X have the same number of threads. Both the Ryzen 7 3800X and the Ryzen 7 2700X use hyperthreading. The Ryzen 7 3800X has 2 logical threads per physical core and the Ryzen 7 2700X 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 Ryzen 7 2700X 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 0.2 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. As such, we need to look elsewhere for more reliable comparisons.

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 and the Ryzen 7 2700X have the same L2 cache size, but the <span class='gpu1Mention'>Ryzen 7 3800X</span> has a 16 MB bigger L3 cache, so in this area, it wins out over the <span class='gpu2Mention'>Ryzen 7 2700X</span>.

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.