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CPU Core Details

CPU Codename Whiskey Lake Coffee Lake
MoBo Socket FCBGA1528 FCBGA1140
Notebook CPU yes yes
Release Date 16 Apr 2019 03 Apr 2018
CPU Link GD Link GD Link

CPU Technical Specifications

CPU Cores 4 6
CPU Threads 8 12
Clock Speed 1.6 GHz 2.6 GHz
Turbo Frequency 4.1GHz 4.3 GHz
Max TDP 25 W 45 W
Lithography 14 nm 14 nm
Bit Width 54 Bit 64 Bit
Max Temperature 100°C -
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 256 KB 384 KB
L2 Cache Size 1024 KB 1536 KB
L3 Cache Size 6 MB 9 MB
Memory Types
Max Memory Size 32 GB -
Memory Channels 2 -
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 i5-8365U 4-Core 1.6GHz is a mid to high-range laptop CPU based on an enhanced version of Intel's 8th Gen 14nm++ Whiskey Lake microarchitecture. It offers 4 physical cores (8 logical), clocked at 1.6GHz, rising to 4.1GHz with Boost Clock enabled. It doesn't have an unlocked multiplier therefore it can't be overclocked using traditional methods. It has 4MB 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 32GB. It has a configurable Thermal Power Design, ranging from just 10W at 800MHz up to 25W for 1.9 GHz. It is on par with competitor processors. Among its many features are Intel Enhanced Speed Shift, HyperThreading, Turbo Boost 20, and Virtualization Technology. It integrates Intel UHD Graphics 620 on board. It has a base frequency of 300MHz which can go up to 1.1GHz, as well as offering DirectX 12 support. This CPU is likely to offer below average computational performance and should be suitable to play most modern AAA games in 2020. The Intel Core i7-8850H 6-Core 2.6GHz is a high-end CPU based on Intel's 14nm Coffee Lake microarchitecture. It offers 6 physical cores (12 logical), initially clocked at 2.6GHz, which may go up to 4.3GHz using Turbo Boost. It doesn't feature an unlocked multiplier, therefore, it can't be overclocked using traditional methods. It has 9MB of L3 Cache. Level 3 cache is a static memory bank of a processor and it is used to feed it instructions. It also has 1.5MB L2 cache and 384KB L1 cache. This processor also supports DDR4 based RAMs with maximum memory support of 64GB. It has a maximum Thermal Power Design of 45W (including the onboard GPU). It is a fairly power efficient processor. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated are enabled. It features Intel UHD Graphics 630 integrated GPU with 350MHz base clock and turbo boost frequency of 1.15GHz. Video memory will depend on the amount of RAM paired with CPU but the maximum limit is 64GB.

Gaming Performance Comparison

In terms of overall gaming performance, the Intel Core i7-8850H 6-Core 2.6GHz is massively better than the Intel Core i5-8365U 4-Core 1.6GHz 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 i5-8365U 4-Core 1.6GHz and the Core i7-8850H 6-Core 2.6GHz 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 6 has 2 more cores than the Core i5-8365U 4-Core. 6 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 4 cores in the Core i5-8365U 4-Core is more than enough for gaming purposes.

The Core i7-8850H 6-Core has 4 more threads than the Core i5-8365U 4-Core. Both the Core i5-8365U 4-Core and the Core i7-8850H 6-Core use hyperthreading. The Core i5-8365U 4-Core has 2 logical threads per physical core and the Core i7-8850H 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 Core i5-8365U 4-Core and Core i7-8850H 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 Core i7-8850H 6-Core has a 1 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 6 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 <span class='gpu2Mention'>Core i7-8850H 6-Core</span> has a 512 KB bigger L2 cache than the <span class='gpu1Mention'>Core i5-8365U 4-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.