10
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Estimated Price:
$849.99
9.9
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Estimated Price:
$559.00 -15%
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CPU Core Details

CPU Codename Skylake X Skylake X
MoBo Socket Socket 2066 Socket 2066
Notebook CPU no no
Release Date 30 Nov 2018 30 Nov 2018
CPU Link GD Link GD Link
Approved

CPU Technical Specifications

{
CPU Cores 12 10
CPU Threads 24 20
Clock Speed 3.5 GHz 3.3 GHz
Turbo Frequency 4.4GHz 4.1 GHz
Max TDP 165 W 165 W
Lithography 14 nm 14 nm
Bit Width 64 Bit 64 Bit
Max Temperature 92°C 92°C
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 768 KB 640 KB
L2 Cache Size 12288 KB 10240 KB
L3 Cache Size 19.25 MB 16.5 MB
Memory Types
Max Memory Size 128 GB 128 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 Intel Core i9-9920X 12-Core 3.5GHz is a high-end CPU based on the 14nm Skylake-X micro architecture. It is competing against AMD's 2nd Gen Ryzen Threadripper processors. It offers 12 physical cores (24 logical), initially clocked at 3.5GHz which may go up to 4.4GHz with Turbo Boost enabled, and 19.25MB of L3 Cache. Among its many features are Turbo Boost Max 3.0 technology, Hyper-Threading, Virtualization is activated. As an 'Extreme' variant, this processor has its multiplier unlocked and overclocking is possible. With a 165W TDP, the Core i9-9920X 12-Core is very power hungry and will require a high-end PSU. This CPU is likely to offer exceptional computational performance and will not be the bottlenecked in any modern gaming PC. It will be able to play all AAA titles. The Intel Core i7-9820X 10-Core 3.3GHz is a high-end CPU based on the 14nm Skylake-X micro architecture. It is competing against AMD's 2nd Gen Ryzen Threadripper processors. It offers 10 physical cores (20 logical), initially clocked at 3.3GHz which may go up to 4.1GHz with Turbo Boost enabled, and 16.5MB of L3 Cache. Among its many features are Turbo Boost Max 3.0 technology, Hyper-Threading, Virtualization is activated. As an 'Extreme' variant, this processor has its multiplier unlocked and overclocking is possible. With a 165W TDP, the Core i9-9820X 10-Core is very power hungry and will require a high-end PSU. This CPU is likely to offer exceptional computational performance and will not be the bottlenecked in any modern gaming PC. It will be able to play all AAA titles.

Gaming Performance Comparison

In terms of overall gaming performance, the Intel Core i9-9920X 12-Core 3.5GHz is massively better than the Intel Core i9-9820X 10-Core 3.3GHz 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 Core i9-9920X 12-Core 3.5GHz and the Core i9-9820X 10-Core 3.3GHz 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 12 has 2 more cores than the Core i9-9820X 10-Core. 12 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 10 cores in the Core i9-9820X 10-Core is more than enough for gaming purposes. However, if you intend on running a server with the 12, it would seem to be a decent choice.

The Core i9-9920X 12-Core has 4 more threads than the Core i9-9820X 10-Core. Both the Core i9-9920X 12-Core and the Core i9-9820X 10-Core use hyperthreading. The Core i9-9920X 12-Core has 2 logical threads per physical core and the Core i9-9820X 10-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 i9-9920X 12-Core and the Core i9-9820X 10-Core are from the same family of CPUs, and thus their clock speeds are directly comparable. With this in mind, it is safe to say that with a 0.2 GHz faster base clock rate, the Core i9-9920X 12-Core manages to provide slightly better performance than the <span class='gpu2Mention'>Core i9-9820X 10-Core</span>.

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='gpu1Mention'>Core i9-9920X 12-Core</span> has a 2048 KB bigger L2 cache than the <span class='gpu2Mention'>Core i9-9820X 10-Core</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.

Both the Core i9-9920X 12-Core and the Core i9-9820X 10-Core have the same TDP of 165 Watts, and were created with the same manufacturing size of 14 nm, which means they will affect your yearly electricity bill about equally.