Celeron N4000C vs EPYC 7643

Primary details

Comparing EPYC 7643 and Celeron N4000C processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	39	2543
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	6.32	no data
Market segment	Server	Laptop
Series	AMD EPYC	no data
Power efficiency	20.14	13.93
Architecture codename	Milan (2021−2023)	no data
Release date	12 January 2021 (3 years ago)	1 April 2019 (5 years ago)
Launch price (MSRP)	$4,995	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7643 and Celeron N4000C 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	48 (Octatetraconta-Core)	2 (Dual-core)
Threads	96	2
Base clock speed	2.3 GHz	1.1 GHz
Boost clock speed	3.6 GHz	2.6 GHz
Multiplier	23	no data
L1 cache	3 MB	no data
L2 cache	24 MB	no data
L3 cache	256 MB (shared)	4 MB
Chip lithography	7 nm+	14 nm
Die size	8x 81 mm2	no data
Maximum core temperature	no data	105 deg C
Number of transistors	33,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on EPYC 7643 and Celeron N4000C 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	2	1
Socket	SP3	FCBGA1090
Power consumption (TDP)	225 Watt	6 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7643 and Celeron N4000C. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.2
AES-NI	+	+
AVX	+	-
vPro	no data	-
Enhanced SpeedStep (EIST)	no data	+
Speed Shift	no data	-
Turbo Boost Technology	no data	-
Hyper-Threading Technology	no data	-
Idle States	no data	+
Thermal Monitoring	-	+
Smart Response	no data	-
GPIO	no data	+
Turbo Boost Max 3.0	no data	-

Security technologies

EPYC 7643 and Celeron N4000C technologies aimed at improving security, for example, by protecting against hacks.

EDB	no data	+
Secure Key	no data	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7643 and Celeron N4000C are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7643 and Celeron N4000C. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR4/LPDDR4 up to 2400 MT/s
Maximum memory size	4 TiB	8 GB
Max memory channels	no data	2
Maximum memory bandwidth	204.795 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	N/A	Intel UHD Graphics 600
Max video memory	no data	8 GB
Quick Sync Video	-	+
Graphics max frequency	no data	650 MHz
Execution Units	no data	12

Graphics interfaces

Available interfaces and connections of EPYC 7643 and Celeron N4000C integrated GPUs.

Number of displays supported	no data	3
eDP	no data	+
DisplayPort	-	+
HDMI	-	+
MIPI-DSI	no data	+

Graphics image quality

Maximum display resolutions supported by EPYC 7643 and Celeron N4000C integrated GPUs, including resolutions over different interfaces.

4K resolution support

no data

+

Graphics API support

APIs supported by EPYC 7643 and Celeron N4000C integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.4

Peripherals

Specifications and connection of peripherals supported by EPYC 7643 and Celeron N4000C.

PCIe version	4.0	2.0
PCI Express lanes	128	6
USB revision	no data	2.0/3.0
Total number of SATA ports	no data	2
Max number of SATA 6 Gb/s Ports	no data	2
Number of USB ports	no data	8
Integrated LAN	no data	-
UART	no data	+

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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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	48.79	0.90
Recency	12 January 2021	1 April 2019
Physical cores	48	2
Threads	96	2
Chip lithography	7 nm	14 nm
Power consumption (TDP)	225 Watt	6 Watt

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Should you still have questions on choice between EPYC 7643 and Celeron N4000C, ask them in Comments section, and we shall answer.

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