Opteron 852 vs Xeon E5-2640

Primary details

Comparing Xeon E5-2640 and Opteron 852 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1334	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.96	no data
Market segment	Server	Server
Architecture codename	Sandy Bridge-EP (2012)	Athens (2003−2006)
Release date	6 March 2012 (12 years ago)	February 2005 (19 years ago)
Launch price (MSRP)	$162	no data
Current price	$43 (0.3x MSRP)	$1738

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2640 and Opteron 852 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	6 (Hexa-Core)	1 (Single-Core)
Threads	12	1
Base clock speed	2.5 GHz	no data
Boost clock speed	3 GHz	2.6 GHz
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	15360 KB (shared)	0 KB
Chip lithography	32 nm	90 nm
Die size	435 mm2	no data
Maximum core temperature	73 °C	no data
Number of transistors	2,270 million	106 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5-2640 and Opteron 852 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	2	8
Socket	FCLGA2011	940
Power consumption (TDP)	95 Watt	92 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2640 and Opteron 852. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	no data
AVX	+	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	no data
Flex Memory Access	-	no data
Demand Based Switching	+	no data
Status	Discontinued	no data

Security technologies

Xeon E5-2640 and Opteron 852 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Identity Protection	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2640 and Opteron 852 are enumerated here.

VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2640 and Opteron 852. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	384 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	42.6 GB/s	no data
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2640 and Opteron 852.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Physical cores	6	1
Threads	12	1
Chip lithography	32 nm	90 nm
Power consumption (TDP)	95 Watt	92 Watt

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Should you still have questions on choice between Xeon E5-2640 and Opteron 852, ask them in Comments section, and we shall answer.

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