EPYC 7773X vs Core 2 Quad Q8400s

Primary details

Comparing Core 2 Quad Q8400s and EPYC 7773X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	21
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Architecture codename	Yorkfield (2007−2009)	Milan-X (2022)
Release date	19 April 2009 (15 years ago)	22 March 2022 (2 years ago)

Detailed specifications

Core 2 Quad Q8400s and EPYC 7773X 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)	64 (Tetrahexaconta-Core)
Threads	4	128
Base clock speed	2.66 GHz	2.2 GHz
Boost clock speed	0.67 GHz	3.5 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	4 MB (shared)	512K (per core)
L3 cache	0 KB	768 MB (shared)
Chip lithography	45 nm	7 nm
Die size	2x 82 mm2	8x 81 mm2
Maximum case temperature (TCase)	76 °C	no data
Number of transistors	456 million	33,200 million
64 bit support	+	-
Windows 11 compatibility	-	no data
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q8400s and EPYC 7773X 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	FCLGA775,LGA775	SP3
Power consumption (TDP)	65 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400s and EPYC 7773X. You'll probably need this information if you require some particular technology.

AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
Status	Discontinued	no data
Precision Boost 2	no data	+

Security technologies

Core 2 Quad Q8400s and EPYC 7773X technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400s and EPYC 7773X are enumerated here.

AMD-V	-	+
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400s and EPYC 7773X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR4-3200

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400s and EPYC 7773X.

PCIe version	2.0	4.0
PCI Express lanes	no data	128

Pros & cons summary

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Recency	19 April 2009	22 March 2022
Physical cores	4	64
Threads	4	128
Chip lithography	45 nm	7 nm
Power consumption (TDP)	65 Watt	280 Watt

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Should you still have questions on choice between Core 2 Quad Q8400s and EPYC 7773X, ask them in Comments section, and we shall answer.

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