Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game APU A4 Micro-6400T Quad-Core Atom Z3775 1.46GHz
Mount and Blade 2: Bannerlord 1074% 1081%
Call of Duty Warzone 546% 550%
Resident Evil 3 Remake 715% 720%
Cyberpunk 2077 641% 645%
Doom Eternal 937% 943%
Beyond Good & Evil 2 833% 839%
Call of Duty: Modern Warfare 2 Remastered 72% 73%
Grand Theft Auto VI 1166% 1173%
Microsoft Flight Simulator 833% 839%
Half-Life: Alyx 833% 839%

In terms of overall gaming performance, the AMD APU A4 Micro-6400T Quad-Core is marginally better than the Intel Atom Z3775 1.46GHz 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 Atom Z3775 1.46GHz was released less than a year after the APU A4 Micro-6400T, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The APU A4 Micro-6400T and the Atom Z3775 1.46GHz both have 4 cores, which is not likely to be a limiting factor for gaming.

Both the AMD APU A4 Micro-6400T Quad-Core and the Intel Atom Z3775 1.46GHz 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 APU A4 Micro-6400T and Atom Z3775 1.46GHz 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 Atom Z3775 1.46GHz has a 0.46 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 Atom Z3775 1.46GHz have the same L2 cache size, and neither CPU appears to have an L3 cache. In this case, the Atom Z3775 1.46GHz has a 96 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 Atom Z3775 1.46GHz has a 2 Watt lower Maximum TDP than the APU A4 Micro-6400T, and was created with a 6 nm smaller manufacturing technology. What this means is the Atom Z3775 1.46GHz 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 A4 Micro-6400T and the Atom Z3775 1.46GHz both have an on-board GPU, which means that they will be capable of running basic graphics applications (i.e., games) without the need for a dedicated graphics card.

For an in-depth GPU comparison, click on the GPU comparison icon that you can find throughout Game-Debate:

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 CodenameMullinsBay Trail-T
MoBo SocketBGA769 (FT3b)BGA 1380
Notebook CPUyesyes
Release Date29 Apr 201430 Apr 2014
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs4
CPU Threads4vs4
Clock Speed1 GHzvs1.46 GHz
Turbo Frequency1.6 GHzvs2.39 GHz
Max TDP4 Wvs2 W
Lithography28 nmvs22 nm
Bit Width64 Bitvs64 Bit
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs224 KB
L2 Cache Size2048 KBvs2048 KB
L3 Cache Size-vs-
Max Memory Size-vs4 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon R3 6400TIntel HD Graphics Desktop (Bay Trail)
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.
Atom Z3755 1.46GHz is a tablet quad core processor based on the Silvermont microarchitecture.
The Silvermont architecture has similar technologies to the acclaimed Ivy Bridge architecture and is also based on a 22nm technology. Even the turbo boost feature is featured.
The processor features weak integrated graphics capable of running modest 3D Games and has a very low power consumption.