Xeon Silver 4509Y vs Atom Z520

Primary details

Comparing Atom Z520 and Xeon Silver 4509Y processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	Intel Atom	no data
Architecture codename	Silverthorne (2008−2010)	Sapphire Rapids (2023−2024)
Release date	2 April 2008 (16 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$65	$563

Detailed specifications

Atom Z520 and Xeon Silver 4509Y 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	1 (Single-Core)	8 (Octa-Core)
Threads	2	16
Base clock speed	1.33 GHz	2.6 GHz
Boost clock speed	0.03 GHz	4.1 GHz
Bus type	FSB	no data
Bus rate	533.33 MT/s	no data
Multiplier	10	no data
L1 cache	56 KB	80 KB (per core)
L2 cache	512 KB	2 MB (per core)
L3 cache	0 KB	22.5 MB (shared)
Chip lithography	45 nm	Intel 7 nm
Die size	24.18 mm2	no data
Maximum core temperature	90 °C	no data
Maximum case temperature (TCase)	no data	84 °C
Number of transistors	47 Million	no data
64 bit support	-	+
Windows 11 compatibility	-	no data
VID voltage range	0.75-1.1V	no data

Compatibility

Information on Atom Z520 and Xeon Silver 4509Y 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)	2
Socket	PBGA441	FCLGA4677
Power consumption (TDP)	2 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z520 and Xeon Silver 4509Y. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	-	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	+	no data
FSB parity	-	no data
Deep Learning Boost	-	+

Security technologies

Atom Z520 and Xeon Silver 4509Y technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
SGX	no data	Yes with Intel® SPS
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z520 and Xeon Silver 4509Y are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom Z520 and Xeon Silver 4509Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR5 @ 4400 MT/s (1 DPC &2DPC)
Maximum memory size	no data	4 TB
Max memory channels	no data	8
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

-

N/A

Peripherals

Specifications and connection of peripherals supported by Atom Z520 and Xeon Silver 4509Y.

PCIe version	no data	5
PCI Express lanes	no data	80

Pros & cons summary

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Recency	2 April 2008	14 December 2023
Physical cores	1	8
Threads	2	16
Power consumption (TDP)	2 Watt	125 Watt

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Should you still have questions on choice between Atom Z520 and Xeon Silver 4509Y, ask them in Comments section, and we shall answer.

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