Intel Core i5-9400 6-Core 2.9GHz
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Intel Core i7-5960X 8-Core 3.0GHz
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Gaming Performance Comparison

Recommended System Requirements
Game Core i5-9400 6-Core 2.9GHz Core i7-5960X 8-Core 3.0GHz

In terms of overall gaming performance, the Intel Core i7-5960X 8-Core 3.0GHz is massively better than the Intel Core i5-9400 6-Core 2.9GHz 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 Core i5-9400 6-Core was released over three years more recently than the Core i7-5960X 8-Core, and so the Core i5-9400 6-Core is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Core i7-5960X 8-Core when 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 Core i7-5960X 8-Core has 2 more cores than the Core i5-9400 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 i5-9400 6-Core is more than enough for gaming purposes. However, if you intend on running a server with the Core i7-5960X 8-Core, it would seem to be a decent choice.

The Core i7-5960X 8-Core has 10 more threads than the Core i5-9400 6-Core. The Core i5-9400 6-Core has one thread per physical core, whereas the Core i7-5960X 8-Core uses hyperthreading and has 2 logical threads per physical core.

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 i5-9400 6-Core and Core i7-5960X 8-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 i7-5960X 8-Core has a 0.1 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. 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 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.

The Core i5-9400 6-Core has a 75 Watt lower Maximum TDP than the Core i7-5960X 8-Core, and was created with a 8 nm smaller manufacturing technology. What this means is the Core i5-9400 6-Core will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

The Core i5-9400 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 Core i7-5960X 8-Core, 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 HD Graphics 630 Mobile, 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.

Can I Run It

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CPU Core Details

CPU CodenameCoffee LakeHaswell-E
MoBo SocketFCLGA1151Socket 2011-3 / R3 / LGA2011-3
Notebook CPUnono
Release Date31 Jan 201929 Aug 2014
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores6vs8
CPU Threads6vs16
Clock Speed2.9 GHzvs3 GHz
Turbo Frequency4.1 GHzvs3.5 GHz
Max TDP65 Wvs140 W
Lithography14 nmvs22 nm
Bit Width64 Bitvs64 Bit
Max Temperature100°Cvs67°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs512 KB
L2 Cache Size-vs2048 KB
L3 Cache Size9 MBvs20 MB
Max Memory Size-vs64 GB
Memory Channels-vs4
ECC Memory Supportnovsno
Comparison

CPU Graphics

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

CPU Package and Version Specifications

Package Size37.5mm x 37.5mmvs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Core i5-9400 6-Core 2.9GHz is a mid-range CPU based on Intel's 9th Gen 14nm, Coffee Lake refresh microarchitecture. It offers 6 physical cores (6 logical) initially clocked at 2.9GHz, which may go up to 4.1GHz using Turbo Boost. It does not have an unlocked multiplier and therefore cannot be overclocked using traditional methods. It has 9MB of SmartCache. Intel SmartCache refers to the architecture that allows all cores to dynamically share access to the last level 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. The Core i5-9400 6-Core 2.9GHz has a maximum Thermal Power Design of 65W. It is on par with competitor processors. Among its many advanced features are Intel Optane Memory support, Intel Turbo Boost 2.0 and Virtualization technology. It Core i5-9400F 6-Core 2.9GHz features integrated Intel HD 630 graphics with a maximum frequency of 1.05GHz. This CPU is likely to offer decent computational performance and will not be a bottleneck in all but the most CPU-intensive AAA games in 2019.Core i7-5960X 8-Core 3.0GHz is an extreme processor based on the 22nm, Haswell architecture.

It offers 8 Physical Cores (16 Logical), initially clocked at 3.0GHz, which may go up to 3.5GHz and 20MB of L3 Cache.
Among its many features, HyperThreading, Turbo Boost and Virtualization are activated and the processor has multiplier unlocked, meaning it can be overclocked easily.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 140W.

It proves to be over 10% faster than Core i7-4960K. Its performance is exceptionally good and enough for even the most demanding applications.

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