Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Opteron 6276 Phenom II X4 B25
Cyberpunk 2077 17% 83%
Hitman 3 11% 146%
Assassins Creed: Valhalla 11% 146%
Resident Evil 8 8% 103%
FIFA 21 23% 71%
Grand Theft Auto VI 36% 200%
Call of Duty: Black Ops Cold War 20% 77%
Genshin Impact 37% 38%
The Medium 42% 213%
Far Cry 6 30% 188%

In terms of overall gaming performance, the AMD Opteron 6276 is massively better than the AMD Phenom II X4 B25 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 Opteron 6276 was released over a year more recently than the Phenom II X4, and so the Opteron 6276 is likely to have better levels of support, and will be more optimized for running the latest games.

The Opteron 6276 has 12 more cores than the Phenom II X4. 16 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 X4 is more than enough for gaming purposes. However, if you intend on running a server with the Opteron 6276, it would seem to be a decent choice.

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 Opteron 6276 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 Phenom II X4 has a 0.4 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 6276.

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 X4 has a 1048 KB bigger L2 cache than the Opteron 6276, but on the other hand, it is the Opteron 6276 that has a 16378 MB bigger L3 cache than the Phenom II X4. In this case, the L2 size is probably what counts, so the Phenom II X4 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 Phenom II X4 has a 20 Watt lower Maximum TDP than the Opteron 6276. However, the Opteron 6276 was created with a 13 nm smaller manufacturing technology. Overall, by taking both into account, the Opteron 6276 is likely the CPU with the lower heat production and power requirements, but there really isn't much in it.

CPU Core Details

CPU CodenameInterlagosDeneb
MoBo SocketSocket G34Socket AM2+
Notebook CPUnono
Release Date14 Nov 201120 Oct 2009
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores16vs4
CPU Threads-vs4
Clock Speed2.3 GHzvs2.7 GHz
Turbo Frequency-vs-
System Bus 6400 MHzvs-
Max TDP115 Wvs95 W
Lithography32 nmvs45 nm
Bit Width-vs64 Bit
Max Temperature55°Cvs-
Virtualization Technologyyesvsno
Comparison

CPU Cache and Memory

L1 Cache Size48 KBvs512 KB
L1 Cache Count16vs-
L2 Cache Size1000 KBvs2048 KB
L2 Cache Count16vs-
L2 Cache Speed2300 MHzvs-
L3 Cache Size16384 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 ReviewOpteron Hexadeca Core 6274 is a 16-Core Server CPU part of the Opteron 6200 Series released by AMD in 2011/2012.
Each Core is clocked at 2.2 and features one thread, making a total of 16.
Obviously not designed for gaming, due to its tremendous price, it will deliver great performance for those crazy enough to use for extreme gaming performance.
Phenom II X4 B25 is an unlocked Athlon II X3 425.

It should offer similar performance to a Phenom II X4 B93.

Vendor-Specific Features

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