EPYC 7643 vs Pentium Gold G6400T

Primary details

Comparing Pentium Gold G6400T and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1821	38
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	6.32
Market segment	Desktop processor	Server
Series	no data	AMD EPYC
Power efficiency	6.04	20.14
Architecture codename	no data	Milan (2021−2023)
Release date	1 April 2020 (4 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	no data	$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium Gold G6400T and EPYC 7643 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	no data	48 (Octatetraconta-Core)
Threads	4	96
Base clock speed	3.4 GHz	2.3 GHz
Boost clock speed	no data	3.6 GHz
Bus rate	8 GT/s	no data
Multiplier	no data	23
L1 cache	no data	3 MB
L2 cache	no data	24 MB
L3 cache	4 MB Intel® Smart Cache	256 MB (shared)
Chip lithography	14 nm	7 nm+
Die size	no data	8x 81 mm2
Maximum core temperature	100 °C	no data
Number of transistors	no data	33,200 million
64 bit support	+	+
Windows 11 compatibility	+	+

Compatibility

Information on Pentium Gold G6400T and EPYC 7643 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	FCLGA1200	SP3
Power consumption (TDP)	35 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium Gold G6400T and EPYC 7643. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	-	no data

Security technologies

Pentium Gold G6400T and EPYC 7643 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium Gold G6400T and EPYC 7643 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 Pentium Gold G6400T and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-3200
Maximum memory size	128 GB	4 TiB
Max memory channels	2	no data
Maximum memory bandwidth	41.6 GB/s	204.795 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 610	N/A
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.05 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Pentium Gold G6400T and EPYC 7643 integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Pentium Gold G6400T and EPYC 7643 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2160@30Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data

Graphics API support

APIs supported by Pentium Gold G6400T and EPYC 7643 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Pentium Gold G6400T and EPYC 7643.

PCIe version	3.0	4.0
PCI Express lanes	16	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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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	2.32	49.69
Recency	1 April 2020	12 January 2021
Threads	4	96
Chip lithography	14 nm	7 nm
Power consumption (TDP)	35 Watt	225 Watt

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Should you still have questions on choice between Pentium Gold G6400T and EPYC 7643, ask them in Comments section, and we shall answer.

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