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Gaming Performance Comparison

Recommended System Requirements
Game APU A6-7400K Dual-Core Phenom II X2 565
Cyberpunk 2077 197% 280%
Assassins Creed: Valhalla 299% 412%
Call of Duty: Black Ops Cold War 188% 269%
FIFA 21 177% 256%
Grand Theft Auto VI 388% 525%
Far Cry 6 368% 500%
Genshin Impact 125% 188%
Hitman 3 299% 412%
Watch Dogs Legion 299% 412%
Mafia: Definitive Edition 219% 309%

In terms of overall gaming performance, the AMD APU A6-7400K Dual-Core is noticeably better than the AMD Phenom II X2 565 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 APU A6-7400K Dual-Core was released over three years more recently than the Phenom II X2, and so the APU A6-7400K Dual-Core is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Phenom II X2 when running the latest games.

The APU A6-7400K Dual-Core and the Phenom II X2 both have 2 cores, and so are quite likely to struggle with the latest games, or at least bottleneck high-end graphics cards when running them. With a decent accompanying GPU, the APU A6-7400K Dual-Core and the Phenom II X2 may still be able to run slightly older games fairly effectively.

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 APU A6-7400K Dual-Core and Phenom II X2 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 APU A6-7400K Dual-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 APU A6-7400K Dual-Core and the Phenom II X2 have the same L2 cache size, but the APU A6-7400K Dual-Core does not appear to have an L3 cache, so the Phenom II X2 definitely 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.

The APU A6-7400K Dual-Core has a 15 Watt lower Maximum TDP than the Phenom II X2, and was created with a 17 nm smaller manufacturing technology. What this means is the APU A6-7400K Dual-Core will consume slightly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill slightly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

The APU A6-7400K Dual-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 Phenom II X2, 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 Radeon R5 7400K, 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 CodenameKaveriCallisto
MoBo SocketSocket FM2+Socket AM2+ / AM3
Notebook CPUnono
Release Date30 Jun 201407 Dec 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs2
CPU Threads2vs-
Clock Speed3.5 GHzvs3.4 GHz
Turbo Frequency3.9 GHzvs-
Max TDP65 Wvs80 W
Lithography28 nmvs45 nm
Bit Width64 Bitvs-
Max Temperature70°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs256 KB
L2 Cache Size1024 KBvs1024 KB
L3 Cache Size-vs6 MB
Memory Channels-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon R5 7400Kno
Base GPU Frequency756 MHzvs-
Max GPU Frequency-vs-
DirectX11.2vs-
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 ReviewAPU A8-7400K Dual-Core is a performance CPU based on the 28nm, Steamroller architecture.

It offers 2 Physical Cores (2 Logical), initially clocked at 3.5GHz, which may go up to 3.9GHz and 1MB of L2 Cache.
Among its many features, Turbo Core and Virtualization are activated.

The processor integrates mildly powerful Graphics called Radeon R5 7400K, with 256 Shader Processing Units, clocked at 756MHz, 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 offers average performance. This means it will become a bottleneck in some demanding applications.
The Phenom II triples the shared L3 cache size from 2MB (in the original Phenom line) to 6MB, leading to benchmark performance gains as high as 30%. In another change from the original Phenom, Cool 'n Quiet applies to the processor as a whole, rather than on a per-core basis. AMD implemented this in order to address the mishandling of threads by Windows Vista, which can cause single-threaded applications to run on a core that idles at half its clock rate.
Socket AM2+ versions of the Phenom II (920, 940) lack forward-compatibility with Socket AM3. Socket AM3 versions of the Phenom II are backwards-compatible with Socket AM2+, though this is contingent on motherboard manufacturers supplying BIOS updates.