Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Opteron 6128 HE Opteron 6276
Cyberpunk 2077 76% 17%
Hitman 3 138% 11%
Assassins Creed: Valhalla 138% 11%
The Medium 203% 42%
Resident Evil 8 96% 8%
FIFA 21 65% 23%
Call of Duty: Black Ops Cold War 71% 20%
Grand Theft Auto VI 190% 36%
Genshin Impact 34% 37%
Far Cry 6 178% 30%

In terms of overall gaming performance, the AMD Opteron 6276 is massively better than the AMD Opteron 6128 HE 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 less than a year after the Opteron 6128 HE, 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 Opteron 6276 has 8 more cores than the Opteron 6128 HE. 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 Opteron 6128 HE 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 6128 HE and Opteron 6276 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 Opteron 6276 has a 0.3 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. 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 Opteron 6276 has a 488 KB bigger L2 cache than the Opteron 6128 HE, 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 System Bus Speed is important for providing higher bandwidth, and with higher bandwidth the system has the capacity to move more data over a certain time period than it would with lower bandwidth.

The Opteron 6128 HE and the Opteron 6276 both have System Bus Speeds of 6400 MHz, and so have the same limits when it comes to the size of the data being processed at once.

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 6128 HE has a 30 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 6128 HE is likely the CPU with the lower heat production and power requirements, but there really isn't much in it.

CPU Core Details

CPU CodenameMagny-CoursInterlagos
MoBo SocketSocket G34Socket G34
Notebook CPUnono
Release Date29 Mar 201014 Nov 2011
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores8vs16
Clock Speed2 GHzvs2.3 GHz
Turbo Frequency-vs-
System Bus 6400 MHzvs6400 MHz
Max TDP85 Wvs115 W
Lithography45 nmvs32 nm
Bit Width-vs-
Voltage Range1.2000 KBvs-
Max Temperature55°Cvs55°C
Virtualization Technologyyesvsyes
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs48 KB
L1 Cache Count8vs16
L2 Cache Size512 KBvs1000 KB
L2 Cache Count8vs16
L2 Cache Speed2000 MHzvs2300 MHz
L3 Cache Size12288 MBvs16384 MB
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 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.Opteron 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.

Vendor-Specific Features

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