Opteron 840 vs Pentium E5800

Primary details

Comparing Pentium E5800 and Opteron 840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2669	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.38	no data
Market segment	Desktop processor	Server
Power efficiency	1.06	no data
Architecture codename	Wolfdale (2008−2010)	SledgeHammer (2003−2005)
Release date	28 November 2010 (13 years ago)	September 2003 (21 year ago)
Launch price (MSRP)	$68	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium E5800 and Opteron 840 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	2 (Dual-core)	1 (Single-Core)
Threads	2	1
Base clock speed	3.2 GHz	no data
Boost clock speed	3.2 GHz	1.4 GHz
L1 cache	64 KB (per core)	128 KB
L2 cache	2 MB (shared)	1 MB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	130 nm
Die size	82 mm2	193 mm2
Maximum core temperature	74 °C	no data
Number of transistors	228 million	106 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Pentium E5800 and Opteron 840 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	1	1
Socket	LGA775	940
Power consumption (TDP)	65 Watt	85 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium E5800 and Opteron 840. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data

Security technologies

Pentium E5800 and Opteron 840 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium E5800 and Opteron 840 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium E5800 and Opteron 840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

no data

Peripherals

Specifications and connection of peripherals supported by Pentium E5800 and Opteron 840.

PCIe version

2.0

no data

Pros & cons summary

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Physical cores	2	1
Threads	2	1
Chip lithography	45 nm	130 nm
Power consumption (TDP)	65 Watt	85 Watt

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