Celeron B820 vs Xeon E5-2640 v4

Primary details

Comparing Xeon E5-2640 v4 and Celeron B820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	914	2805
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	6.68	no data
Market segment	Server	Laptop
Series	Intel Xeon E5	Intel Celeron
Architecture codename	Broadwell (2014−2019)	Sandy Bridge (2011−2013)
Release date	20 June 2016 (8 years ago)	31 July 2011 (13 years ago)
Launch price (MSRP)	$939	$86

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2640 v4 and Celeron B820 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	10 (Deca-Core)	2 (Dual-core)
Threads	20	2
Base clock speed	2.4 GHz	1.7 GHz
Boost clock speed	3.4 GHz	1.7 GHz
Bus type	QPI	DMI 2.0
Bus rate	2 × 8 GT/s	4 × 5 GT/s
Multiplier	24	17
L1 cache	no data	128 KB
L2 cache	2.5 MB	512 KB
L3 cache	25 MB	2 MB
Chip lithography	14 nm	32 nm
Die size	246.24 mm2	131 mm2
Maximum core temperature	76 °C	100 °C
Number of transistors	3200 Million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2640 v4 and Celeron B820 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 (Multiprocessor)	1 (Uniprocessor)
Socket	FCLGA2011	FCPGA988,PGA988
Power consumption (TDP)	90 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2640 v4 and Celeron B820. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	-
FMA	-	+
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
My WiFi	no data	-
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	-	+
Demand Based Switching	+	-
PAE	46 Bit	no data
FDI	no data	+
Fast Memory Access	no data	+
Status	Launched	Discontinued

Security technologies

Xeon E5-2640 v4 and Celeron B820 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
Secure Key	+	no data
OS Guard	+	no data
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2640 v4 and Celeron B820 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2640 v4 and Celeron B820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133	DDR3
Maximum memory size	1.5 TB	16 GB
Max memory channels	4	2
Maximum memory bandwidth	68.3 GB/s	21.335 GB/s
ECC memory support	+	-

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	1.05 GHz

Graphics interfaces

Available interfaces and connections of Xeon E5-2640 v4 and Celeron B820 integrated GPUs.

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

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2640 v4 and Celeron B820.

PCIe version	3.0	2.0
PCI Express lanes	40	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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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Pros & cons summary

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Performance score	8.04	0.53
Recency	20 June 2016	31 July 2011
Physical cores	10	2
Threads	20	2
Chip lithography	14 nm	32 nm
Power consumption (TDP)	90 Watt	35 Watt

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Should you still have questions on choice between Xeon E5-2640 v4 and Celeron B820, ask them in Comments section, and we shall answer.

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