Opteron X2 865 HE vs Opteron 856

Primary details

Comparing Opteron 856 and Opteron X2 865 HE processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Architecture codename	Athens (2003−2006)	Egypt (2005−2006)
Release date	April 2006 (18 years ago)	August 2005 (18 years ago)

Detailed specifications

Opteron 856 and Opteron X2 865 HE basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	1 (Single-Core)	2 (Dual-core)
Threads	1	2
Boost clock speed	3 GHz	1.8 GHz
L1 cache	128 KB	128 KB
L2 cache	1 MB	1 MB
L3 cache	0 KB	0 KB
Chip lithography	90 nm	90 nm
Number of transistors	106 million	233 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Opteron 856 and Opteron X2 865 HE compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	8	8
Socket	940	940
Power consumption (TDP)	92 Watt	55 Watt

Pros & cons summary

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Physical cores	1	2
Threads	1	2
Power consumption (TDP)	92 Watt	55 Watt

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Should you still have questions on choice between Opteron 856 and Opteron X2 865 HE, ask them in Comments section, and we shall answer.

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