Xeon Bronze 3408U vs Silver 4309Y

Primary details

Comparing Xeon Silver 4309Y and Xeon Bronze 3408U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	642	1075
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	29.04
Market segment	Server	Server
Power efficiency	10.86	4.73
Architecture codename	Ice Lake-SP (2021)	Sapphire Rapids (2023−2024)
Release date	6 April 2021 (3 years ago)	10 January 2023 (1 year ago)
Launch price (MSRP)	no data	$425

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Silver 4309Y and Xeon Bronze 3408U 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	8 (Octa-Core)	8 (Octa-Core)
Threads	16	8
Base clock speed	2.8 GHz	1.8 GHz
Boost clock speed	3.6 GHz	1.9 GHz
L1 cache	64K (per core)	80K (per core)
L2 cache	1 MB (per core)	2 MB (per core)
L3 cache	12 MB (shared)	22.5 MB
Chip lithography	10 nm	Intel 7 nm
Maximum case temperature (TCase)	76 °C	79 °C
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Xeon Silver 4309Y and Xeon Bronze 3408U 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	1
Socket	FCLGA4189	FCLGA4677
Power consumption (TDP)	105 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Silver 4309Y and Xeon Bronze 3408U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	no data
TSX	+	+
Deep Learning Boost	+	+

Security technologies

Xeon Silver 4309Y and Xeon Bronze 3408U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Silver 4309Y and Xeon Bronze 3408U are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4309Y and Xeon Bronze 3408U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2667	DDR5-4000
Maximum memory size	6 TB	4 TB
Max memory channels	8	8
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Silver 4309Y and Xeon Bronze 3408U.

PCIe version	4.0	4.0
PCI Express lanes	64	80

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	12.11	6.28
Recency	6 April 2021	10 January 2023
Threads	16	8
Power consumption (TDP)	105 Watt	125 Watt

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Should you still have questions on choice between Xeon Silver 4309Y and Xeon Bronze 3408U, ask them in Comments section, and we shall answer.

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