Select any two CPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Phenom II X2 B55 Opteron 8380
Cyberpunk 2077 241% 169%
Assassins Creed: Valhalla 359% 262%
Call of Duty: Black Ops Cold War 230% 160%
FIFA 21 219% 151%
Microsoft Flight Simulator 286% 204%
Watch Dogs Legion 359% 262%
World of Warcraft: Shadowlands 430% 318%
Grand Theft Auto VI 460% 342%
Horizon: Zero Dawn 286% 204%
Genshin Impact 158% 104%

In terms of overall gaming performance, the AMD Opteron 8380 is noticeably better than the AMD Phenom II X2 B55 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 Phenom II X2 was released over a year more recently than the Opteron 8380, and so the Phenom II X2 is likely to have better levels of support, and will be more optimized for running the latest games.

The Opteron 8380 has 2 more cores than the Phenom II X2. With 4 cores, the Opteron 8380 is much less likely to struggle with the latest games, or bottleneck high-end graphics cards when running them.

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 X2 and Opteron 8380 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 X2 has a 0.5 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 Opteron 8380.

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 Phenom II X2 has a 512 KB bigger L2 cache than the Opteron 8380, but on the other hand, it is the Opteron 8380 that has a 6138 MB bigger L3 cache than the Phenom II X2. In this case, the L2 size is probably what counts, so the Phenom II X2 is likely superior 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 Opteron 8380 has a 5 Watt lower Maximum TDP than the Phenom II X2 (though they were created with the same size 45 nm manufacturing technology). What this means is the Opteron 8380 will consume slightly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill slightly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

CPU Core Details

CPU CodenameCallistoShanghai
MoBo SocketSocket AM2+ / AM3Socket Fr2
Notebook CPUnono
Release Date02 Dec 200913 Nov 2008
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs4
CPU Threads2vs-
Clock Speed3 GHzvs2.5 GHz
Turbo Frequency-vs-
System Bus -vs1000 MHz
Max TDP80 Wvs75 W
Lithography45 nmvs45 nm
Bit Width64 Bitvs-
Voltage Range-vs1.35 V KB
Max Temperature70°Cvs55°C
Virtualization Technologynovsyes
Comparison

CPU Cache and Memory

L1 Cache Size256 KBvs128 KB
L1 Cache Count-vs4
L2 Cache Size1024 KBvs512 KB
L2 Cache Count-vs4
L2 Cache Speed-vs2500 MHz
L3 Cache Size6 MBvs6144 MB
Memory Channels-vs-
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 X2 B55 is a business-class processor based on the 45nm, K10 architecture.

It offers 2 Physical Cores (2 Logical), clocked at 3.0GHz and 6MB of L3 Cache.
Among its many features, Virtualization is activated.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 80W.

Its performance is below the average and so most demanding games will not run optimally.
Opteron is AMD's x86 server and workstation processor line, and was the first processor which supported the AMD64 instruction set architecture (known generically as x86-64). It was released on April 22, 2003 with the SledgeHammer core (K8) and was intended to compete in the server and workstation markets, particularly in the same segment as the Intel Xeon processor. Processors based on the AMD K10 microarchitecture (codenamed Barcelona) were announced on September 10, 2007 featuring a new quad-core configuration. The most-recently released Opteron CPUs are the Piledriver-based Opteron 4300 and 6300 series processors, codenamed "Seoul" and "Abu Dhabi" respectively.

Vendor-Specific Features

AMD Power ManagementAMD Power Management
AMDBusiness ClassAMD Business Class
AMD Black EditionAMD Black Edition