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Gaming Performance Comparison

Recommended System Requirements
Game APU A4 Micro-6400T Quad-Core Phenom II X4 P920
Cyberpunk 2077 641% 440%
Red Dead Redemption 2 656% 450%
Doom Eternal 617% 422%
Microsoft Flight Simulator 833% 580%
Resident Evil 3 Remake 715% 494%
Need For Speed Heat 637% 437%
Grand Theft Auto VI 1166% 822%
BeamNG.drive 789% 548%
Star Citizen 617% 422%
Star Wars: Jedi - Fallen Order 937% 656%

In terms of overall gaming performance, the AMD Phenom II X4 P920 is noticeably better than the AMD APU A4 Micro-6400T Quad-Core 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 A4 Micro-6400T was released over three years more recently than the Phenom II X4, and so the APU A4 Micro-6400T is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Phenom II X4 when running the latest games.

The APU A4 Micro-6400T and the Phenom II X4 both have 4 cores, which is not likely to be a limiting factor for gaming.

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 A4 Micro-6400T 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 Phenom II X4 has a 0.6 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. In this case, however, the difference is enough that it possibly indicates the superiority of the .

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 A4 Micro-6400T and the Phenom II X4 have the same L2 cache size, and neither CPU appears to have an L3 cache. In this case, the Phenom II X4 has a 384 KB bigger L1 cache, so would probably provide better performance than the APU A4 Micro-6400T, at least 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 A4 Micro-6400T has a 21 Watt lower Maximum TDP than the Phenom II X4, and was created with a 17 nm smaller manufacturing technology. What this means is the APU A4 Micro-6400T 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 APU A4 Micro-6400T 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 Radeon R3 6400T, 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 CodenameMullinsChamplain
MoBo SocketBGA769 (FT3b)Socket S1g4
Notebook CPUyesyes
Release Date29 Apr 201412 May 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs4
CPU Threads4vs-
Clock Speed1 GHzvs1.6 GHz
Turbo Frequency1.6 GHzvs-
Max TDP4 Wvs25 W
Lithography28 nmvs45 nm
Bit Width64 Bitvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs512 KB
L2 Cache Size2048 KBvs2048 KB
L3 Cache Size-vs-
Memory Channels-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon R3 6400Tno
Base GPU Frequency350 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 ‚ÄčA4 Micro-6400T Quad-Core is a micro mobile processor based on the 28nm, Puma+ microarchitecture, exclusively for tablets.
It offers 4 cores clocked at 1.0GHz that go up to 1.6GHz, in Turbo Mode and 2MB of Level 2 Cache. It also offers weak integrated Graphics called Radeon R3 6400T which come clocked at 350MHz and offer 128 Shader Processing Units.
Its performance is ridiculously low and thus only suited for home browsing.
Phenom II X4 P920 is a Quad core mobile CPU based on the Champlain Core and therefore related to the Athlon II X4 Desktop Series.
It features 4 cores, clocked 1.6GHz and the fastest supported memory is DDR3-1066.
Its performance is quite average and decent enough to run most games at high settings fluently, if paired with the appropriate GPU, obviously. However, the most demanding games might still require reduced settings to be played optimally.

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