Celeron B800 vs Xeon E5440

Primary details

Comparing Xeon E5440 and Celeron B800 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2039	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.38	no data
Market segment	Server	Laptop
Series	no data	Intel Celeron
Architecture codename	no data	Sandy Bridge (2011−2013)
Release date	1 January 2008 (16 years ago)	19 June 2011 (13 years ago)
Launch price (MSRP)	no data	$80
Current price	$91	$85 (1.1x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5440 and Celeron B800 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	no data	2 (Dual-core)
Threads	no data	2
Base clock speed	2.83 GHz	1.5 GHz
Boost clock speed	no data	1.5 GHz
L1 cache	no data	64K (per core)
L2 cache	no data	256K (per core)
L3 cache	12 MB L2 Cache	2 MB (shared)
Chip lithography	45 nm	32 nm
Die size	no data	131 mm2
Maximum core temperature	67 °C	100 °C
Number of transistors	no data	504 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Xeon E5440 and Celeron B800 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	no data	1
Socket	LGA771	FCPGA988
Power consumption (TDP)	80 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5440 and Celeron B800. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
AES-NI	no data	-
FMA	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Demand Based Switching	+	-
FDI	no data	+
Fast Memory Access	no data	+
FSB parity	+	no data
Status	Discontinued	Discontinued

Security technologies

Xeon E5440 and Celeron B800 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5440 and Celeron B800 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and Celeron B800. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR3
Maximum memory size	no data	16 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	21.3 GB/s
ECC memory support	no data	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® HD Graphics for 2nd Generation Intel® Processors
Graphics max frequency	no data	1 GHz

Graphics interfaces

Available interfaces and connections of Xeon E5440 and Celeron B800 integrated GPUs.

Number of displays supported	no data	2
eDP	no data	+
DisplayPort	no data	+
HDMI	no data	+
SDVO	no data	+
CRT	no data	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5440 and Celeron B800.

PCIe version	no data	2.0
PCI Express lanes	no data	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Pros & cons summary

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Recency	1 January 2008	19 June 2011
Chip lithography	45 nm	32 nm
Power consumption (TDP)	80 Watt	35 Watt

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Should you still have questions on choice between Xeon E5440 and Celeron B800, ask them in Comments section, and we shall answer.

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