Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Phenom II X6 1055T v2 Athlon II X4 641
Cyberpunk 2077 40% 81%
Red Dead Redemption 2 43% 84%
Call of Duty: Modern Warfare 22% 58%
Doom Eternal 36% 75%
Microsoft Flight Simulator 77% 128%
Planet Zoo 65% 113%
Grand Theft Auto VI 140% 209%
Need For Speed Heat 39% 80%
Warcraft 3: Reforged 65% 55%
Wolcen: Lords of Mayhem 25% 61%

In terms of overall gaming performance, the AMD Phenom II X6 1055T v2 is massively better than the AMD Athlon II X4 641 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 Athlon II X4 was released less than a year after the Phenom II X6, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

Both CPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings (assuming they are accompanied by equivalently powerful GPUs).

The Phenom II X6 has 2 more cores than the Athlon II X4. 6 cores is probably excessive if you mean to just run the latest games, as games are not yet able to harness this many cores. The cores in the Athlon II X4 is more than enough for gaming purposes.

The Phenom II X6 has 2 more threads than the Athlon II X4. 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 Phenom II X6 and Athlon 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 X6 and the Athlon II X4 both have the same clock frequency, this is by no means an indicator that the two CPUs will provide the same level of performance. As such, we need to look elsewhere for more reliable comparisons.

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 Athlon II X4 has a 1024 KB bigger L2 cache than the Phenom II X6, and although the Athlon II X4 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.

The Phenom II X6 has a 5 Watt lower Maximum TDP than the Athlon II X4. However, the Athlon II X4 was created with a 13 nm smaller manufacturing technology. Overall, by taking both into account, the Athlon II X4 is likely the CPU with the lower heat production and power requirements, by quite a wide margin.

CPU Core Details

CPU CodenameThubanLlano
MoBo SocketSocket AM3Socket FM1
Notebook CPUnono
Release Date01 May 201001 Feb 2012
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores6vs4
CPU Threads6vs4
Clock Speed2.8 GHzvs2.8 GHz
Turbo Frequency3.3 GHzvs-
Max TDP95 Wvs100 W
Lithography45 nmvs32 nm
Bit Width64 Bitvs64 Bit
Max Temperature71°Cvs70°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size768 KBvs512 KB
L2 Cache Size3072 KBvs4096 KB
L3 Cache Size6 MBvs-
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphics
Base GPU Frequency-vs-
Max GPU Frequency-vs-
DirectX-vs-
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 ReviewPhenom II X6 1055T v2 is a high-end processor based on the 45nm Leo architecture.

It offers 6 Physical Cores (6 Logical), initially clocked at 2.8GHz, which may go up to 3.3GHz and 6MB of L3 Cache.
Among its many features, Turbo Core and Virtualization are activated and the clock multiplier is unlocked, meaning it can be overclocked easily.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 95W.

It is a powerful processor whose performance is good. It's thus capable of running most applications smoothly without any problem.
Athlon II X4 641 is a performance processor based on the 32nm, K10 micro-architecture.

It offers 4 Physical Cores (4 Logical), clocked at 2.8GHz and 4MB of L2 Cache.
Among its many features, Virtualization is activated.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 100W.

It is a powerful processor whose performance is good. It's thus capable of running most applications smoothly without any problem.

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