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CPU Core Details

CPU Codename Zen 3 Castle Peak
MoBo Socket Socket AM4 Socket sTRX4
Notebook CPU no no
Release Date 30 Nov 2020 05 Jan 2020
CPU Link GD Link GD Link
Approved

CPU Technical Specifications

{
CPU Cores 16 64
CPU Threads 32 127
Clock Speed 3.5 GHz 3 GHz
Turbo Frequency 4.9GHz 4.5 GHz
Max TDP 105 W 280 W
Lithography 7 nm 7 nm
Bit Width 64 Bit 64 Bit
Max Temperature - 68°C
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 512 KB 3072 KB
L2 Cache Size 4096 KB 32767 KB
L3 Cache Size 32 MB 260 MB
Memory Types
Max Memory Size 64 GB 2048 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 9 5950X 16-Core 3.5GHz is a high-end CPU based on AMD's 7nm+ Zen 3 microarchitecture. It offers 16 physical cores (32 logical), initially clocked at 3.5GHz, which may go up to 4.9GHz using Precision Boost. It has an unlocked multiplier, therefore, it can be overclocked using traditional methods. As an AMD 'X' CPU, the Ryzen 9 5950X 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 Threadripper 3990X 64-Core 3.0GHz is an extremely high-end (HEDT) CPU based on AMD's 7nm Zen 2 microarchitecture. It offers 64 physical cores (128 logical), initially clocked at 3.0Hz, which may go up to 4.5GHz using Turbo Boost. As of 2020, it is the only HEDT processor with 64 cores. It has an unlocked multiplier, therefore it can be overclocked using traditional methods. It has 260MB 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 2TB. It has a maximum Thermal Power Design of 280W, making it one of the most power intensive processors on the market. It also has a maximum temperature of 68C so appropriate CPU cooling will be necessary. Among its many features are Enmotus FuzeDrive for AMD Ryzen, AMD SenseMI Technology, AMD Ryzen VR-Ready Premium, Virtualization, AES, AVX2, FMA4, XFR (Extended Frequency Range) It doesn't feature an integrated GPU. The Threadripper 3990X 64-Core 3.0GHz's high core count and middling clock speed make it a decent but extremely expensive option for gamers. This CPU is better suited to prosumers and content creators who may be running high-intensity threaded applications. It will run AAA games very well. While a high clock speed is a priority for gaming, 64 cores is truly excessive for any gaming applications in 2020 and beyond.

Gaming Performance Comparison

In terms of overall gaming performance, the AMD Threadripper 3990X 64-Core 3.0GHz is massively better than the AMD Ryzen 9 5950X 16-Core 3.4GHz 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 9 5950X 16-Core 3.4GHz and the Threadripper 3990X 64-Core 3.0GHz 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 64 has 48 more cores than the Ryzen 9 5950X. 64 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 16 cores in the Ryzen 9 5950X is more than enough for gaming purposes. However, if you intend on running a server with the 64, it would seem to be a decent choice.

The Threadripper 3990X 64-Core has 95 more threads than the Ryzen 9 5950X. Both the Ryzen 9 5950X and the Threadripper 3990X 64-Core use hyperthreading. The Ryzen 9 5950X has 2 logical threads per physical core and the Threadripper 3990X 64-Core has 1.984375.

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 9 5950X and Threadripper 3990X 64-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 9 5950X 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 64.

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 <span class='gpu2Mention'>Threadripper 3990X 64-Core</span> has a 28671 KB bigger L2 cache than the <span class='gpu1Mention'>Ryzen 9 5950X</span>, 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.