Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Core i5-4570S 2.9GHz Core 2 Duo E8400 3.0GHz
Red Dead Redemption 2 31% 236%
Call of Duty: Modern Warfare 3% 149%
Cyberpunk 2077 11% 185%
Zombieland: Double Tap - Road Trip 31% 236%
Microsoft Flight Simulator 42% 265%
Fortnite: Chapter 2 28% 85%
The Outer Worlds 42% 265%
Borderlands 3 31% 236%
FIFA 20 7% 140%
Need For Speed Heat 10% 184%

In terms of overall gaming performance, the Intel Core i5-4570S 2.9GHz is massively better than the Intel Core 2 Duo E8400 3.0GHz 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 i5-4570S 2.9GHz was released over three years more recently than the Core 2 Duo, and so the Core i5-4570S 2.9GHz is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Core 2 Duo when running the latest games.

The Core i5-4570S 2.9GHz has 2 more cores than the Core 2 Duo. With 4 cores, the Core i5-4570S 2.9GHz is much less likely to struggle with the latest games, or bottleneck high-end graphics cards when running them.

The Core i5-4570S 2.9GHz has 2 more threads than the Core 2 Duo. Both CPUs have one thread 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 i5-4570S 2.9GHz and Core 2 Duo 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 2 Duo 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 Core 2 Duo has a 5120 KB bigger L2 cache than the Core i5-4570S 2.9GHz, and although the Core 2 Duo does not appear to have an L3 cache, its larger L2 cache means that it wins out in this area.

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 i5-4570S 2.9GHz and the Core 2 Duo have the same TDP of 65 Watts, but the Core i5-4570S 2.9GHz has a lower lithography size, and so will affect your yearly electricity bills less adversely.

The Core i5-4570S 2.9GHz 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 2 Duo, 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 4600 Desktop, 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 CodenameHaswellWolfdale
MoBo SocketLGA 1150LGA 775/ Socket T
Notebook CPUnono
Release Date02 Jun 201310 Aug 2008
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs2
CPU Threads4vs2
Clock Speed2.9 GHzvs3 GHz
Turbo Frequency3.6 GHzvs-
System Bus -vs1333 MHz
Max TDP65 Wvs65 W
Lithography22 nmvs45 nm
Bit Width64 Bitvs64 Bit
Max Temperature71°Cvs72°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size256 KBvs128 KB
L2 Cache Size1024 KBvs6144 KB
L2 Cache Speed-vs-
L3 Cache Size6 MBvs-
Max Memory Size-vs-
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel HD Graphics 4600 Desktop
Base GPU Frequency400 MHzvs-
Max GPU Frequency1250 MHzvs-
DirectX11.1vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewCore i5-4570S 2.9GHz is an energy efficient CPU based on the 22nm, Haswell architecture.

It offers 4 Physical Cores (4 Logical), initially clocked at 2.9GHz, which may go up to 3.6GHz and 6MB of L3 Cache.
Among its many features, Turbo Boost and Virtualization are activated.

The processor integrates powerful Graphics called Intel HD Graphics 4600, with 20 Execution Units, initially clocked at 350MHz and that go up to 1150MHz, in Turbo Mode which share the L2 Cache and system RAM with the processor.
Both the processor and integrated graphics have a rated board TDP of 65W.

Its performance is very good and sufficient for extreme gaming.
Core 2 Duo E8400 3.0GHz is a middle-class Processor based on the 45nm Core micro-architecture.

It offers 2 Physical Cores (2 Logical), clocked at 3.0GHz and 6MB of L2 Cache.
Among its many features, Virtualization is activated.

The processor DOES NOT integrated any graphics. and has a rated board TDP of 65W.

It offers average performance. It will therefore become a bottleneck in today's demanding games.

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