Select any two CPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game APU A6-6400B Dual-Core Athlon II X2 280
Cyberpunk 2077 202% 285%
Hitman 3 307% 419%
Assassins Creed: Valhalla 307% 419%
Call of Duty: Black Ops Cold War 193% 274%
FIFA 21 183% 261%
Grand Theft Auto VI 397% 534%
Far Cry 6 377% 508%
Genshin Impact 129% 192%
Battlefield 6 323% 439%
Resident Evil 8 236% 328%

In terms of overall gaming performance, the AMD APU A6-6400B Dual-Core is noticeably better than the AMD Athlon II X2 280 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 A6-6400B Dual-Core was released less than a year after the Athlon II X2, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The APU A6-6400B Dual-Core and the Athlon 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 A6-6400B Dual-Core and the Athlon 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 A6-6400B Dual-Core and Athlon 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 A6-6400B Dual-Core has a 0.3 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 Athlon II X2 has a 1024 KB bigger L2 cache than the APU A6-6400B Dual-Core, but neither of the CPUs have L3 caches, so the Athlon II X2 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 APU A6-6400B Dual-Core and the Athlon II X2 have the same TDP of 65 Watts, but the APU A6-6400B Dual-Core has a lower lithography size, and so will affect your yearly electricity bills less adversely.

The APU A6-6400B 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 Athlon 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 HD 8470D, 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 CodenameRichlandRegor
MoBo SocketSocket FM2Socket AM2+ / AM3
Notebook CPUnono
Release Date01 Jun 201328 Jan 2013
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs2
CPU Threads2vs-
Clock Speed3.9 GHzvs3.6 GHz
Turbo Frequency4.1 GHzvs-
Max TDP65 Wvs65 W
Lithography32 nmvs45 nm
Bit Width64 Bitvs64 Bit
Max Temperature74°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs256 KB
L2 Cache Size1024 KBvs2048 KB
L2 Cache Speed-vs-
L3 Cache Size-vs-
Memory Channels-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon HD 8470D
Base GPU Frequency800 MHzvs-
Max GPU Frequency-vs-
DirectX11.1vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size40mmx40mmvs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewAPU A6-6400B Dual-Core is a performance CPU based on the 32nm, Piledriver architecture.

It offers 2 Physical Cores (2 Logical), initially clocked at 3.9GHz, which may go up to 4.1GHz and 1MB of L2 Cache.
Among its many features, Turbo Core and Virtualization are activated.

The processor integrates weak Graphics called Radeon HD 8470D, with 192 Shader Processing Units, clocked at 800MHz, 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.
Athlon II X2 280 is a recent addition to AMD's Athlon II series of microprocessors, built using a 45 nm technology fabrication, using a Regor core. It is as of now, the fastest Athlon Dual Core CPU, and the only one released in 2013. It packs two cores clocked at 3.6GHz each, and 2MB of L2 Cache memory. The thermal design power should not exceed 65 watts.