Xeon Silver 4309Y vs E5603

Primary details

Comparing Xeon E5603 and Xeon Silver 4309Y processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2322	632
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.13	no data
Market segment	Server	Server
Power efficiency	1.44	10.92
Architecture codename	Westmere-EP (2010−2011)	Ice Lake-SP (2021)
Release date	14 February 2011 (13 years ago)	6 April 2021 (3 years ago)
Launch price (MSRP)	$286	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5603 and Xeon Silver 4309Y 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)	8 (Octa-Core)
Threads	4	16
Base clock speed	1.6 GHz	2.8 GHz
Boost clock speed	1.6 GHz	3.6 GHz
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	1 MB (per core)
L3 cache	4 MB (shared)	12 MB (shared)
Chip lithography	32 nm	10 nm
Die size	239 mm2	no data
Maximum case temperature (TCase)	no data	76 °C
Number of transistors	1,170 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Xeon E5603 and Xeon Silver 4309Y 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	2
Socket	FCLGA1366,LGA1366	FCLGA4189
Power consumption (TDP)	80 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5603 and Xeon Silver 4309Y. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	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
Demand Based Switching	+	no data
PAE	40 Bit	no data
Deep Learning Boost	-	+

Security technologies

Xeon E5603 and Xeon Silver 4309Y technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5603 and Xeon Silver 4309Y are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5603 and Xeon Silver 4309Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-2667
Maximum memory size	288 GB	6 TB
Max memory channels	3	8
Maximum memory bandwidth	25.6 GB/s	no data
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5603 and Xeon Silver 4309Y.

PCIe version	2.0	4.0
PCI Express lanes	no data	64

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	1.24	12.34
Recency	14 February 2011	6 April 2021
Physical cores	4	8
Threads	4	16
Chip lithography	32 nm	10 nm
Power consumption (TDP)	80 Watt	105 Watt

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Should you still have questions on choice between Xeon E5603 and Xeon Silver 4309Y, ask them in Comments section, and we shall answer.

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