Xeon Silver 4509Y vs Core 2 Quad Q9400s

Primary details

Comparing Core 2 Quad Q9400s 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	Desktop processor	Server
Architecture codename	Yorkfield (2007−2009)	Sapphire Rapids (2023−2024)
Release date	18 January 2009 (15 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	no data	$563

Detailed specifications

Core 2 Quad Q9400s 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	4 (Quad-Core)	8 (Octa-Core)
Threads	4	16
Base clock speed	2.66 GHz	2.6 GHz
Boost clock speed	0.67 GHz	4.1 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	6 MB (shared)	2 MB (per core)
L3 cache	0 KB	22.5 MB (shared)
Chip lithography	45 nm	Intel 7 nm
Die size	2x 82 mm2	no data
Maximum case temperature (TCase)	76 °C	84 °C
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9400s 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	2
Socket	LGA775	FCLGA4677
Power consumption (TDP)	65 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400s and Xeon Silver 4509Y. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	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

Core 2 Quad Q9400s 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 Core 2 Quad Q9400s 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 Core 2 Quad Q9400s and Xeon Silver 4509Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	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

On certain motherboards (Chipset feature)

N/A

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400s and Xeon Silver 4509Y.

PCIe version	2.0	5
PCI Express lanes	no data	80

Pros & cons summary

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Recency	18 January 2009	14 December 2023
Physical cores	4	8
Threads	4	16
Power consumption (TDP)	65 Watt	125 Watt

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Should you still have questions on choice between Core 2 Quad Q9400s and Xeon Silver 4509Y, ask them in Comments section, and we shall answer.

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