EPYC 9965 vs Core 2 Quad Q8400

Primary details

Comparing Core 2 Quad Q8400 and EPYC 9965 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2281	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	1.29	no data
Architecture codename	Yorkfield (2007−2009)	Turin (2024)
Release date	19 April 2009 (15 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$14,813

Detailed specifications

Core 2 Quad Q8400 and EPYC 9965 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)	192
Threads	4	384
Base clock speed	2.66 GHz	2.25 GHz
Boost clock speed	0.67 GHz	3.7 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	4 MB (shared)	1 MB (per core)
L3 cache	0 KB	384 MB (shared)
Chip lithography	45 nm	3 nm
Die size	2x 82 mm2	no data
Maximum case temperature (TCase)	71 °C	no data
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 Q8400 and EPYC 9965 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	SP5
Power consumption (TDP)	95 Watt	500 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and EPYC 9965. 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
FSB parity	-	no data
Precision Boost 2	no data	+

Security technologies

Core 2 Quad Q8400 and EPYC 9965 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 Q8400 and EPYC 9965 are enumerated here.

AMD-V	-	+
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and EPYC 9965. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR5

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 Q8400 and EPYC 9965.

PCIe version	2.0	5.0
PCI Express lanes	no data	128

Pros & cons summary

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Recency	19 April 2009	10 October 2024
Physical cores	4	192
Threads	4	384
Chip lithography	45 nm	3 nm
Power consumption (TDP)	95 Watt	500 Watt

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