Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Athlon 64 FX-70 Dual Core Opteron 2381 HE
Cyberpunk 2077 230% 163%
Assassins Creed: Valhalla 344% 254%
Call of Duty: Black Ops Cold War 220% 155%
FIFA 21 208% 146%
Microsoft Flight Simulator 274% 198%
Watch Dogs Legion 344% 254%
World of Warcraft: Shadowlands 413% 309%
Grand Theft Auto VI 442% 332%
Genshin Impact 150% 99%
Horizon: Zero Dawn 274% 198%

In terms of overall gaming performance, the AMD Opteron 2381 HE is noticeably better than the AMD Athlon 64 FX-70 Dual Core 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 2381 HE was released less than a year after the Athlon 64 FX-70, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The Opteron 2381 HE has 2 more cores than the Athlon 64 FX-70. With 4 cores, the Opteron 2381 HE 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 Athlon 64 FX-70 and Opteron 2381 HE 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 Athlon 64 FX-70 has a 0.1 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. 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 Athlon 64 FX-70 has a 1536 KB bigger L2 cache than the Opteron 2381 HE, and although the Athlon 64 FX-70 does not appear to have an L3 cache, its larger L2 cache means that it wins out 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 2381 HE has a 70 Watt lower Maximum TDP than the Athlon 64 FX-70, and was created with a 45 nm smaller manufacturing technology. What this means is the Opteron 2381 HE 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 CodenameWindsorShanghai
MoBo SocketSocket FSocket F
Notebook CPUnono
Release Date30 Nov 200622 Apr 2009
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs4
CPU Threads2vs-
Clock Speed2.6 GHzvs2.5 GHz
Turbo Frequency-vs-
System Bus -vs2000 MHz
Max TDP125 Wvs55 W
Lithography90 nmvs45 nm
Bit Width64 Bitvs-
Voltage Range-vs1.325V KB
Max Temperature65°Cvs55°C
Virtualization Technologynovsyes
Comparison

CPU Cache and Memory

L1 Cache Size256 KBvs128 KB
L1 Cache Count-vs4
L2 Cache Size2048 KBvs512 KB
L2 Cache Count-vs4
L2 Cache Speed-vs2500 MHz
L3 Cache Size-vs6 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 ReviewAthlon 64 FX-70 Dual Core is a middle-class Processor based on the 90nm K8 micro-architecture.

It offers 2 Physical Cores (2 Logical), clocked at 2.6GHz and 2MB of L2 Cache.
Among its many features, Virtualization is activated.

The processor DOES NOT integrate any graphics. and has a rated board TDP of 125W.

It offers average performance. This means it will become a bottleneck in some demanding applications.
Note: The rank of this processor is based on its Quad-Core Configuration.
Opteron is AMD's x86 server and workstation processor line, and was the first processor to implement 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 8- and 12-core Socket G34 Opterons, code-named Magny-Cours.

Vendor-Specific Features

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