Select any two CPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game APU A8-3820 Quad-Core Phenom 9100e Quad-Core
Cyberpunk 2077 77% 179%
Assassins Creed: Valhalla 139% 276%
Call of Duty: Black Ops Cold War 72% 171%
Hitman 3 139% 276%
Grand Theft Auto VI 191% 359%
FIFA 21 66% 161%
Far Cry 6 180% 341%
Genshin Impact 34% 111%
World of Warcraft: Shadowlands 175% 334%
Watch Dogs Legion 139% 276%

In terms of overall gaming performance, the AMD APU A8-3820 Quad-Core is massively better than the AMD Phenom 9100e 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 A8-3820 Quad-Core was released over three years more recently than the Phenom 9100e Quad-Core, and so the APU A8-3820 Quad-Core is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Phenom 9100e Quad-Core when running the latest games.

The APU A8-3820 Quad-Core and the Phenom 9100e Quad-Core both have 4 cores, which is not likely to be a limiting factor for gaming.

Both the AMD APU A8-3820 Quad-Core and the AMD Phenom 9100e Quad-Core 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 A8-3820 Quad-Core and Phenom 9100e Quad-Core 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 A8-3820 Quad-Core has a 0.7 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 A8-3820 Quad-Core has a 2048 KB bigger L2 cache than the Phenom 9100e Quad-Core, and although the APU A8-3820 Quad-Core does not appear to have an L3 cache, its larger L2 cache means that it 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.

Both the APU A8-3820 Quad-Core and the Phenom 9100e Quad-Core have the same TDP of 65 Watts, but the APU A8-3820 Quad-Core has a lower lithography size, and so will affect your yearly electricity bills less adversely.

The APU A8-3820 Quad-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 9100e Quad-Core, 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 6550D, 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 CodenameLlanoAgena
MoBo SocketSocket FM1Socket AM2+
Notebook CPUnono
Release Date01 Jan 201227 Mar 2008
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs4
CPU Threads4vs4
Clock Speed2.5 GHzvs1.8 GHz
Turbo Frequency2.8 GHzvs-
Max TDP65 Wvs65 W
Lithography32 nmvs65 nm
Bit Width64 Bitvs64 Bit
Max Temperature73°Cvs61°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size256 KBvs512 KB
L2 Cache Size4096 KBvs2048 KB
L3 Cache Size-vs2 MB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsRadeon HD 6550D
Base GPU Frequency600 MHzvs-
Max GPU Frequency-vs-
DirectX11vs-
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 A8-3820 Quad-Core is a performance CPU based on the 32nm, Lynx architecture.

It offers 4 Physical Cores (4 Logical), initially clocked at 2.5GHz, which may go up to 2.8GHz and 4MB of L2 Cache.

The processor integrates mildly powerful Graphics called Radeon HD 6550D, with 400 Shader Processing Units, clocked at 600MHz, 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 is a powerful Quad Core whose performance is good. It's thus capable of running most applications smoothly without any problem.
Phenom 9100e Quad-Core is an energy efficient performance processor based on the 65nm, K10 architecture.

It offers 4 Physical Cores (4 Logical), clocked at 1.8GHz and 2MB of L3 Cache.
Among its many features, Virtualization is activated.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 65W.

It offers average performance. This means it will become a bottleneck in some demanding applications.