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CPU Core Details

CPU Codename Richland Deneb
MoBo Socket Socket FM2 Socket AM3
Notebook CPU no no
Release Date 01 Jul 2013 02 Jun 2009
CPU Link GD Link GD Link
Approved

CPU Technical Specifications

{
CPU Cores 2 4
CPU Threads 2 4
Clock Speed 3.8 GHz 2.5 GHz
Turbo Frequency 4GHz -
Max TDP 65 W 65 W
Lithography 32 nm 45 nm
Bit Width 64 Bit 64 Bit
Max Temperature 70°C 70°C
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 192 KB 64 KB
L2 Cache Size 1024 KB 2048 KB
L3 Cache Size - 6 MB
Memory Types
Memory Channels 2 2
ECC Memory Support no no

CPU Graphics

Integrated Graphics no no
Base GPU Frequency - -
Max GPU Frequency - -
DirectX - -
Displays Supported - -

CPU Mini Review

Mini Review APU A4-6320 Dual-Core is an entry-level CPU based on the 32nm, Piledriver architecture. <br/> <br/> It offers 2 Physical Cores (2 Logical), initially clocked at 3.8GHz, which may go up to 4.0GHz and 1MB of L2 Cache. <br/> Among its many features, <b>Turbo Core and Virtualization</b> are activated. <br/> <br/> The processor integrates very weak Graphics called <b>Radeon HD 8370D</b>, with 128 Shader Processing Units, clocked at 760MHz, which share the L2 Cache and system RAM with the processor. <br/> Both the processor and integrated graphics have a rated board TDP of 65W. <br/> <br/> It offers average performance. This means it will become a bottleneck in some demanding applications. Phenom II X4 905e is an energy efficient processor based on the 45nm, K10 architecture. <br/> <br/> It offers 4 Physical Cores (4 Logical), clocked at 2.5GHz and 6MB of L3 Cache. <br/> Among its many features, <b>Virtualization</b> is activated and the clock multiplier is unlocked, meaning it can be overclocked easily. <br/> <br/> The processor DOES NOT integrate any graphics. and has a rated board TDP of 65W. <br/> <br/> It offers average performance. This means it will become a bottleneck in some demanding applications.

Gaming Performance Comparison

In terms of overall gaming performance, the AMD Phenom II X4 905e is massively better than the AMD APU A4-6320 Dual-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.

Both the APU A4-6320 Dual-Core and the Phenom II X4 905e were released at the same time, so are likely to be quite similar.

The 4 has 2 more cores than the APU A4-6320 Dual-Core. { With 4 cores, the 4 is much less likely to struggle with the latest games, or bottleneck high-end graphics cards when running them.

The Phenom II X4 has 2 more threads than the APU A4-6320 Dual-Core. 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 A4-6320 Dual-Core 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 APU A4-6320 Dual-Core has a 1.3 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. In this case, however, the difference is probably a good indicator that the 4 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 <span class='gpu2Mention'>Phenom II X4</span> has a 1024 KB bigger L2 cache than the <span class='gpu1Mention'>APU A4-6320 Dual-Core</span>, and although the APU A4-6320 Dual-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 A4-6320 Dual-Core and the Phenom II X4 have the same TDP of 65 Watts, but the APU A4-6320 Dual-Core has a lower lithography size, and so will affect your yearly electricity bills less adversely.