Ryzen 7 7800X vs Core i5-6400

Primary details

Comparing Core i5-6400 and Ryzen 7 7800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1508	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.70	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i5	AMD Ryzen 7
Architecture codename	Skylake (2015−2016)	Zen 4
Release date	1 September 2015 (8 years ago)	no data
Launch price (MSRP)	$187	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-6400 and Ryzen 7 7800X 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	2.7 GHz	4.2 GHz
Boost clock speed	2.7 GHz	5 GHz
Bus support	4 × 8 GT/s	no data
L1 cache	256 KB	512 KB
L2 cache	1 MB	8 MB
L3 cache	6 MB	96 MB
Chip lithography	14 nm	5 nm, 6 nm
Die size	122 mm2	71+122 mm
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	No	Yes

Compatibility

Information on Core i5-6400 and Ryzen 7 7800X 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 (Uniprocessor)	no data
Socket	FCLGA1151	no data
Power consumption (TDP)	65 Watt	120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-6400 and Ryzen 7 7800X. You'll probably need this information if you require some particular technology.

AES-NI	+	no data
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
TSX	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-6400 and Ryzen 7 7800X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-6400 and Ryzen 7 7800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	no data
Maximum memory size	64 GB	128 GB
Max memory channels	2	no data
Maximum memory bandwidth	34.134 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel HD Graphics 530

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-6400 and Ryzen 7 7800X.

PCIe version	3.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Physical cores	4	8
Threads	4	16
Chip lithography	14 nm	5 nm
Power consumption (TDP)	65 Watt	120 Watt

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Should you still have questions on choice between Core i5-6400 and Ryzen 7 7800X, ask them in Comments section, and we shall answer.

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