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Gaming Performance Comparison

Recommended System Requirements
Game Core i5-2400S 2.5GHz Phenom II X4 905e
Cyberpunk 2077 37% 95%
Assassins Creed: Valhalla 84% 163%
Call of Duty: Black Ops Cold War 33% 89%
Watch Dogs Legion 84% 163%
FIFA 21 28% 82%
Microsoft Flight Simulator 55% 121%
Godfall 164% 277%
Grand Theft Auto VI 125% 221%
World of Warcraft: Shadowlands 113% 203%
Genshin Impact 4% 48%

In terms of overall gaming performance, the Intel Core i5-2400S 2.5GHz is massively better than the AMD Phenom II X4 905e 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 i5-2400S 2.5GHz was released over a year more recently than the Phenom II X4, and so the Core i5-2400S 2.5GHz is likely to have better levels of support, and will be more optimized for running the latest games.

The Core i5-2400S 2.5GHz and the Phenom II X4 both have 4 cores, which is not likely to be a limiting factor for gaming.

Both the Intel Core i5-2400S 2.5GHz and the AMD Phenom II X4 905e have the same number of threads. 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 i5-2400S 2.5GHz and Phenom II X4 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 i5-2400S 2.5GHz and the Phenom II X4 both have the same clock frequency, this is by no means an indicator that the two CPUs will provide the same level of performance. 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 Phenom II X4 has a 1024 KB bigger L2 cache than the Core i5-2400S 2.5GHz, and the two CPUs have the same L3 cache size, so the Phenom II X4 wins out in this area with its larger L2 cache.

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 i5-2400S 2.5GHz and the Phenom II X4 have the same TDP of 65 Watts, but the Core i5-2400S 2.5GHz has a lower lithography size, and so will affect your yearly electricity bills less adversely.

The Core i5-2400S 2.5GHz 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 Phenom II X4, 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 2500 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 CodenameSandy BridgeDeneb
MoBo SocketLGA 1155/Socket H2Socket AM3
Notebook CPUnono
Release Date09 Jan 201102 Jun 2009
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs4
CPU Threads4vs4
Clock Speed2.5 GHzvs2.5 GHz
Turbo Frequency3.3 GHzvs-
Max TDP65 Wvs65 W
Lithography32 nmvs45 nm
Bit Width64 Bitvs64 Bit
Max Temperature69°Cvs70°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size256 KBvs64 KB
L2 Cache Size1024 KBvs2048 KB
L3 Cache Size6 MBvs6 MB
Max Memory Size-vs-
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel HD Graphics 2500 Desktop
Base GPU Frequency650 MHzvs-
Max GPU Frequency-vs-
DirectX11vs-
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 i5-2400S 2.5GHz is an energy efficient CPU based on the 32nm, Sandy Bridge architecture.

It offers 4 Physical Cores (4 Logical), initially clocked at 2.5GHz, which may go up to 3.3GHz and 6MB of L3 Cache.
Among its many features, Turbo Boost and Virtualization are activated.

The processor integrates weak Graphics called Intel HD Graphics 2000, with 6 Execution Units, initially clocked at 850MHz and that go up to 1100MHz, 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.

It is a powerful Quad Core whose performance is good. It's thus capable of running most applications smoothly without any problem.
Phenom II X4 905e is an energy efficient processor based on the 45nm, K10 architecture.

It offers 4 Physical Cores (4 Logical), clocked at 2.5GHz and 6MB of L3 Cache.
Among its many features, Virtualization is activated and the clock multiplier is unlocked, meaning it can be overclocked easily.

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

It offers average performance. This means it will become a bottleneck in some demanding applications.