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Gaming Performance Comparison

Recommended System Requirements
Game Ryzen 9 5900HX 8-Core 3.3GHz Core i7-9750H 6-Core 2.6GHz
Battlefield 2042 49% 21%
Forza Horizon 5 63% 43%
Battlefield 6 49% 21%
Far Cry 6 42% 11%
S.T.A.L.K.E.R. 2 19% 24%
Resident Evil 8 29% 9%
Elden Ring 64% 45%
Grand Theft Auto VI 40% 7%
Avatar: Frontiers of Pandora 59% 37%
Halo Infinite 49% 21%

In terms of overall gaming performance, the AMD Ryzen 9 5900HX 8-Core 3.3GHz is massively better than the Intel Core i7-9750H 6-Core 2.6GHz 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.

The Ryzen 9 5900HX was released over a year more recently than the Core i7-9750H 6-Core, and so the Ryzen 9 5900HX 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 9 5900HX has 2 more cores than the Core i7-9750H 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 i7-9750H 6-Core is more than enough for gaming purposes. However, if you intend on running a server with the Ryzen 9 5900HX, it would seem to be a decent choice.

The Ryzen 9 5900HX has 4 more threads than the Core i7-9750H 6-Core. Both the Ryzen 9 5900HX and the Core i7-9750H 6-Core use hyperthreading. The Ryzen 9 5900HX has 2 logical threads per physical core and the Core i7-9750H 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 9 5900HX and Core i7-9750H 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 9 5900HX 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 9 5900HX.

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 9 5900HX has a 4608 KB bigger L2 cache than the Core i7-9750H 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.

Both the Ryzen 9 5900HX and the Core i7-9750H 6-Core have the same TDP of 45 Watts, but the Ryzen 9 5900HX has a lower lithography size, and so will affect your yearly electricity bills less adversely.

The Core i7-9750H 6-Core has an on-board GPU, which means that it will be capable of running basic graphics applications (i.e., games) without the need for a dedicated graphics card. The Ryzen 9 5900HX, however, does not, and you will probably have to look for a dedicated card if you wish to use it at all.

For in-depth GPU comparisons with the Intel UHD Graphics 630, click on the following GPU overview comparison icon (visible throughout Game-Debate), and choose a GPU from the list to compare against:

On-board GPUs tend to be fairly awful in comparison to dedicated cards from the likes of AMD or Nvidia, but as they are built into the CPU, they also tend to be cheaper and require far less power to run (this makes them a good choice for laptops). We would recommend a dedicated card for running the latest games, but integrated GPUs are improving all the time and casual gamers may find less recent games perform perfectly acceptably.

CPU Core Details

CPU CodenameZen 3Coffee Lake R
MoBo SocketSocket AM4FCBGA1440
Notebook CPUyesyes
Release Date12 Jan 202123 Apr 2019
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores8vs6
CPU Threads16vs12
Clock Speed3.3 GHzvs2.6 GHz
Turbo Frequency4.6 GHzvs4.5 GHz
Max TDP45 Wvs45 W
Lithography7 nmvs14 nm
Bit Width64 Bitvs64 Bit
Max Temperature95°Cvs100°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size768 KBvs384 KB
L2 Cache Size6144 KBvs1536 KB
L3 Cache Size20 MBvs12 MB
Max Memory Size-vs64 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel UHD Graphics 630
Base GPU Frequency-vs-
Max GPU Frequency-vs-
DirectX-vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs42 mm x 28 mm x 1.49 mm
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Ryzen 9 5900HX is a top-end laptop CPU based on AMD's 7nm+ Zen 3 microarchitecture. It offers 8 physical cores (16 logical), initially clocked at 3.3GHz, which may go up to 4.6GHz using Precision Boost. It has an unlocked multiplier, therefore, it can be overclocked using traditional methods. As an AMD 'X' CPU, the Ryzen 9 5900HX can use eXtended Frequency Range (XFR) for automated overclocking. It has 20MB 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 45W. This makes the Ryzen 9 5900HX a reasonably portable mobile CPU, although this is in-line with the high core count. Among its many features are Simultaneous Multithreading, Cool n Quiet, CoolCore Technology, Extended Frequency Range (XFR), Pure Power and Precision Boost are enabled. It features an integrated AMD Radeon Vega GPU with 11 Compute Units that offers low-end graphical performance.The Intel Core i7-9750H 6-Core 2.6GHz is a high-end performance mobile 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 4.5GHz using Turbo Boost. It doesn't feature an unlocked multiplier, therefore it can't be overclocked using traditional methods. It has 12MB 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 1.1GHz. Video memory will depend on the amount of RAM paired with CPU but the maximum limit is 64GB.