Atom D2550 vs Xeon D-1521

Primary details

Comparing Xeon D-1521 and Atom D2550 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1509	3139
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.60	no data
Market segment	Server	Laptop
Series	Intel Xeon D	Intel Atom
Power efficiency	7.53	2.46
Architecture codename	Broadwell (2015−2019)	Cedarview (2011−2012)
Release date	1 November 2015 (9 years ago)	1 November 2011 (13 years ago)
Launch price (MSRP)	$199	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon D-1521 and Atom D2550 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	4 (Quad-Core)	2 (Dual-core)
Threads	8	4
Base clock speed	2.4 GHz	1.86 GHz
Boost clock speed	2.7 GHz	1.87 GHz
Bus type	DMI 2.0	no data
Multiplier	24	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	512K (per core)
L3 cache	1.5 MB (per core)	0 KB
Chip lithography	14 nm	32 nm
Die size	246.24 mm2	66 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	80 °C	no data
Number of transistors	3,200 million	176 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon D-1521 and Atom D2550 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 (Uniprocessor)	1
Socket	FCBGA1667	FCBGA559
Power consumption (TDP)	45 Watt	10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1521 and Atom D2550. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® SSE2, Intel® SSE3, Intel® SSSE3
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	-
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
PAE	no data	36 Bit
GPIO	+	no data

Security technologies

Xeon D-1521 and Atom D2550 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-1521 and Atom D2550 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-1521 and Atom D2550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR3	DDR3
Maximum memory size	128 GB	4 GB
Max memory channels	2	1
Maximum memory bandwidth	34.124 GB/s	6.4 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel Graphics Media Accelerator (GMA) 3650 (640 MHz)

Graphics interfaces

Available interfaces and connections of Xeon D-1521 and Atom D2550 integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Xeon D-1521 and Atom D2550.

PCIe version	2.0/3.0	no data
PCI Express lanes	24	4
USB revision	2.0/3.0	no data
Total number of SATA ports	6	no data
Number of USB ports	8	no data
Integrated LAN	+	no data
UART	+	no data

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.

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Pros & cons summary

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Performance score	3.58	0.26
Recency	1 November 2015	1 November 2011
Physical cores	4	2
Threads	8	4
Chip lithography	14 nm	32 nm
Power consumption (TDP)	45 Watt	10 Watt

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Should you still have questions on choice between Xeon D-1521 and Atom D2550, ask them in Comments section, and we shall answer.

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