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Gaming Performance Comparison

Recommended System Requirements
Game Phenom II X4 B65 Phenom II X4 980
Red Dead Redemption 2 64% 55%
Halo: Reach 22% 26%
Cyberpunk 2077 61% 52%
Call of Duty: Modern Warfare 41% 33%
Doom Eternal 56% 47%
Microsoft Flight Simulator 103% 91%
Grand Theft Auto VI 158% 143%
Dragon Ball Z Kakarot 43% 35%
Star Wars: Jedi - Fallen Order 126% 113%
Need For Speed Heat 60% 51%

In terms of overall gaming performance, the AMD Phenom II X4 980 is very slightly better than the AMD Phenom II X4 B65 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 X4 980 was released less than a year after the X4 B65, 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 X4 B65 and the X4 980 both have 4 cores, which is not likely to be a limiting factor for gaming.

Both the AMD Phenom II X4 B65 and the AMD Phenom II X4 980 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 X4 B65 and the X4 980 are from the same family of CPUs, and thus their clock speeds are directly comparable. With this in mind, it is safe to say that with a 0.3 GHz faster base clock rate, the X4 980 manages to provide slightly better performance than the X4 B65.

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 X4 B65 and the X4 980 have the same L2 cache size, and the same L3 cache size, so in terms of cache-related gaming performance, we have to look back to the clock rate, where the X4 980 wins out.

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 X4 B65 has a 30 Watt lower Maximum TDP than the X4 980 (though they were created with the same size 45 nm manufacturing technology). What this means is the X4 B65 will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

CPU Core Details

CPU CodenameDenebDeneb
MoBo SocketSocket AM2+Socket AM3
Notebook CPUnono
Release Date07 Dec 201003 May 2011
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs4
CPU Threads4vs4
Clock Speed3.4 GHzvs3.7 GHz
Turbo Frequency-vs-
Max TDP95 Wvs125 W
Lithography45 nmvs45 nm
Bit Width64 Bitvs64 Bit
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size512 KBvs512 KB
L2 Cache Size2048 KBvs2048 KB
L3 Cache Size6 MBvs6 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 ReviewPhenom II X4 B65 is an unlocked Phenom II X2 565.

It should offer similar performance to a Phenom II X4 B99.
Phenom II X4 980 is a performance processor based on the 45nm, K10 architecture.

It offers 4 Physical Cores (4 Logical), clocked at 3.7GHz and 6MB of L3 Cache.
Among its many features, Virtualization is 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 125W.

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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