EPYC 7401 vs Core 2 Duo T6400

Primary details

Comparing Core 2 Duo T6400 and EPYC 7401 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	88
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	14.69
Market segment	Laptop	Server
Series	Intel Core 2 Duo	AMD EPYC
Architecture codename	Penryn (2008−2011)	Naples (2017−2018)
Release date	1 January 2009 (15 years ago)	29 June 2017 (7 years ago)
Launch price (MSRP)	no data	$1,850
Current price	$33	$1502 (0.8x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Duo T6400 and EPYC 7401 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	2 (Dual-core)	24 (Tetracosa-Core)
Threads	2	48
Base clock speed	2 GHz	2 GHz
Boost clock speed	2 GHz	3 GHz
Bus support	800 MHz	no data
L1 cache	no data	96K (per core)
L2 cache	2 MB	512K (per core)
L3 cache	2 MB L2 Cache	64 MB (shared)
Chip lithography	45 nm	14 nm
Die size	no data	192 mm2
Maximum core temperature	105 °C	no data
Number of transistors	no data	4,800 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	Yes
VID voltage range	1V-1.25V	no data

Compatibility

Information on Core 2 Duo T6400 and EPYC 7401 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	no data	2 (Multiprocessor)
Socket	PGA478	TR4
Power consumption (TDP)	35 Watt	170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T6400 and EPYC 7401. You'll probably need this information if you require some particular technology.

AES-NI	no data	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Demand Based Switching	-	no data
Status	Discontinued	no data

Security technologies

Core 2 Duo T6400 and EPYC 7401 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 Duo T6400 and EPYC 7401 are enumerated here.

AMD-V	no data	+
VT-x	-	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T6400 and EPYC 7401. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR4 Eight-channel
Maximum memory size	no data	2 TiB
Max memory channels	no data	8
Maximum memory bandwidth	no data	170.671 GB/s
ECC memory support	no data	+

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo T6400 and EPYC 7401.

PCIe version	no data	3.0
PCI Express lanes	no data	128

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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Pros & cons summary

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Recency	1 January 2009	29 June 2017
Physical cores	2	24
Threads	2	48
Chip lithography	45 nm	14 nm
Power consumption (TDP)	35 Watt	170 Watt

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Should you still have questions on choice between Core 2 Duo T6400 and EPYC 7401, ask them in Comments section, and we shall answer.

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