Ryzen 9 6900HX vs EPYC Embedded 3251

Primary details

Comparing EPYC Embedded 3251 and Ryzen 9 6900HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	437
Place by popularity	not in top-100	not in top-100
Market segment	Server	Laptop
Series	AMD EPYC Embedded	AMD Rembrandt (Zen 3+)
Power efficiency	no data	32.79
Architecture codename	Zen (2017−2020)	Rembrandt-H (Zen 3+) (2022)
Release date	21 February 2018 (6 years ago)	January 2022 (2 years ago)
Launch price (MSRP)	$315	no data

Detailed specifications

EPYC Embedded 3251 and Ryzen 9 6900HX 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	8 (Octa-Core)	8 (Octa-Core)
Threads	16	16
Base clock speed	2.5 GHz	3.3 GHz
Boost clock speed	2.5 GHz	4.9 GHz
Multiplier	25	no data
L1 cache	768 KB	64K (per core)
L2 cache	4 MB	512K (per core)
L3 cache	16 MB (shared)	16 MB (shared)
Chip lithography	14 nm	6 nm
Die size	213 mm2	208 mm2
Maximum core temperature	no data	95 °C
Number of transistors	4800 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	+

Compatibility

Information on EPYC Embedded 3251 and Ryzen 9 6900HX 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)	1
Socket	TR4	FP7
Power consumption (TDP)	55 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC Embedded 3251 and Ryzen 9 6900HX. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA
AES-NI	+	+
AVX	+	+
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC Embedded 3251 and Ryzen 9 6900HX are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC Embedded 3251 and Ryzen 9 6900HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5
Maximum memory size	512 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon 680M

Peripherals

Specifications and connection of peripherals supported by EPYC Embedded 3251 and Ryzen 9 6900HX.

PCIe version	no data	4.0
PCI Express lanes	no data	20

Pros & cons summary

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Chip lithography	14 nm	6 nm
Power consumption (TDP)	55 Watt	45 Watt

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