Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game APU A4 Micro-6400T Quad-Core Atom D525 1.83GHz
Red Dead Redemption 2 772% 1421%
Call of Duty: Modern Warfare 546% 1027%
Halo: Reach 260% 528%
Cyberpunk 2077 641% 1192%
Star Wars: Jedi - Fallen Order 863% 1580%
Borderlands 3 772% 1421%
Resident Evil 3 Remake 715% 1321%
Detroit: Become Human 646% 1201%
Microsoft Flight Simulator 848% 1554%
FIFA 20 524% 988%

In terms of overall gaming performance, the AMD APU A4 Micro-6400T Quad-Core is noticeably better than the Intel Atom D525 1.83GHz 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 Atom D525 1.83GHz, 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 Atom D525 1.83GHz when running the latest games.

The APU A4 Micro-6400T has 2 more cores than the Atom D525 1.83GHz. With 4 cores, the APU A4 Micro-6400T is much less likely to struggle with the latest games, or bottleneck high-end graphics cards when running them.

Both the AMD APU A4 Micro-6400T Quad-Core and the Intel Atom D525 1.83GHz have the same number of threads. The APU A4 Micro-6400T has one thread per physical core, whereas the Atom D525 1.83GHz uses hyperthreading and has 2 logical threads 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 D525 1.83GHz 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 D525 1.83GHz has a 0.8 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 probably a good indicator that the APU A4 Micro-6400T is superior.

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 has a 1024 KB bigger L2 cache than the Atom D525 1.83GHz, but neither of the CPUs have L3 caches, so the APU A4 Micro-6400T 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.

The APU A4 Micro-6400T has a 9 Watt lower Maximum TDP than the Atom D525 1.83GHz, and was created with a 17 nm smaller manufacturing technology. What this means is the APU A4 Micro-6400T 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 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 Atom D525 1.83GHz, 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 CodenameMullinsPineview
MoBo SocketBGA769 (FT3b)Socket 559
Notebook CPUyesyes
Release Date29 Apr 201401 Apr 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs2
CPU Threads4vs4
Clock Speed1 GHzvs1.8 GHz
Turbo Frequency1.6 GHzvs-
Max TDP4 Wvs13 W
Lithography28 nmvs45 nm
Bit Width64 Bitvs64 Bit
Voltage Range-vs0.800V-1.175V KB
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs112 KB
L2 Cache Size2048 KBvs1024 KB
L2 Cache Speed-vs-
L3 Cache Size-vs-
Max Memory Size-vs4 GB
Max Memory Bandwidth-vs6.4 GB/s
Memory Channels-vs1
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon R3 6400T
Base GPU Frequency350 MHzvs-
Max GPU Frequency-vs-
DirectX11.2vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs22mm x 22mm
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.
Intel Atom is the brand name for a line of ultra-low-voltage x86 and x86-64 CPUs (or microprocessors) from Intel, designed in 45 nm CMOS and used mainly in netbooks, nettops, and Mobile Internet devices (MIDs)
Intel Atom is a direct successor of the Intel A100 and A110 low-power microprocessors (code-named Stealey), which were built on a 90 nm process, had 512 KB L2 cache and run at 600 MHz/800 MHz with 3W TDP (Thermal Design Power). Prior to the Silverthorne announcement, outside sources had speculated that Atom would compete with AMD's Geode system-on-a-chip processors, used by the One Laptop per Child project, and other cost- and power-sensitive applications for x86 processors. However, Intel revealed on October 15, 2007 that it was developing another new mobile processor, codenamed Diamondville, for OLPC-type devices.

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