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Gaming Performance Comparison

Recommended System Requirements
Game Phenom II X6 1405T FX-8350
Red Dead Redemption 2 87% 22%
Star Wars: Jedi - Fallen Order 107% 34%
Call of Duty: Modern Warfare 39% 10%
Halo: Reach 23% 50%
Microsoft Flight Simulator 103% 32%
Cyberpunk 2077 59% 3%
Borderlands 3 87% 22%
FIFA 20 34% 13%
Death Stranding 103% 32%
Need For Speed Heat 58% 3%

In terms of overall gaming performance, the AMD FX-8350 is massively better than the AMD Phenom II X6 1405T 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 FX-8350 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 FX-8350 has 2 more cores than the Phenom II X6. 8 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 Phenom II X6 is more than enough for gaming purposes. However, if you intend on running a server with the FX-8350, it would seem to be a decent choice.

The FX-8350 has 2 more threads than the Phenom II X6. 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 FX-8350 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 FX-8350 has a 1 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 FX-8350 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 FX-8350 has a 5120 KB bigger L2 cache than the Phenom II X6, which means that it, at worst, wins out in this area, and at best, will provide superior gaming performance and will work much better with high-end graphics cards.

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 30 Watt lower Maximum TDP than the FX-8350. However, the FX-8350 was created with a 13 nm smaller manufacturing technology. Overall, by taking both into account, the Phenom II X6 is likely the CPU with the lower heat production and power requirements, but there really isn't much in it.

CPU Core Details

CPU CodenameZosmaVishera
MoBo SocketSocket AM2+ / AM3Socket AM3+
Notebook CPUnono
Release Date31 Aug 201023 Oct 2012
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores6vs8
CPU Threads6vs8
Clock Speed3 GHzvs4 GHz
Turbo Frequency-vs4.2 GHz
Max TDP95 Wvs125 W
Lithography45 nmvs32 nm
Bit Width64 Bitvs64 Bit
Max Temperature71°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size768 KBvs384 KB
L2 Cache Size3072 KBvs8192 KB
L3 Cache Size6 MBvs8 MB
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 ReviewThis is the unlocked version of the Athlon II X4 640 (Zosma processor core)FX-8350 is a high-end CPU based on the 32nm Piledriver architecture.

It offers 8 Physical Cores (8 Logical), initially clocked at 4.0GHz, which may go up to 4.2GHz and 8MB 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 integrated any graphics. and has a rated board TDP of 125W.

Compared to its competitor Core i7-3770K it performs around 12% worse. Still, its performance is very good and sufficient for extreme gaming.

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