Ryzen 7 5825U vs EPYC 7643

Primary Details

Comparing EPYC 7643 and Ryzen 7 5825U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	31	588
Place by popularity	not in top-100	not in top-100
Cost-Effectiveness Evaluation	3.29	no data
Market segment	Server	Laptop
Series	AMD EPYC	AMD Cezanne (Zen 3, Ryzen 5000)
Architecture codename	Milan (2021)	Barcelo-U (Zen 3)
Release date	15 March 2021 (3 years ago)	6 January 2022 (2 years ago)
Launch price (MSRP)	$4,995	no data
Current price	$8164 (1.6x MSRP)	no data

Cost-Effectiveness Evaluation

Performance per price, higher is better.

Detailed Specifications

EPYC 7643 and Ryzen 7 5825U 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)	8 (Octa-Core)
Threads	96	16
Base clock speed	2.3 GHz	2 GHz
Boost clock speed	3.6 GHz	4.5 GHz
L1 cache	64 KB (per core)	64K (per core)
L2 cache	512 KB (per core)	512K (per core)
L3 cache	256 MB (shared)	16 MB (shared)
Chip lithography	7 nm+	7 nm
Die size	8x 81 mm2	180 mm2
Maximum core temperature	no data	95 °C
Number of transistors	33,200 million	10,700 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	Yes	No

Compatibility

Information on EPYC 7643 and Ryzen 7 5825U 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	FP6
Power consumption (TDP)	225 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7643 and Ryzen 7 5825U. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	DDR4-3200/LPDDR4x-4266 RAM (incl. ECC), PCIe 3, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	no data	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7643 and Ryzen 7 5825U are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7643 and Ryzen 7 5825U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR4, DDR4
Maximum memory size	4 TiB	no data
Maximum memory bandwidth	204.795 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

AMD Radeon RX Vega 8 (Ryzen 4000/5000)

Peripherals

Specifications and connection of peripherals supported by EPYC 7643 and Ryzen 7 5825U.

PCIe version	4.0	3.0
PCI Express lanes	128	16

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.

EPYC 7643 outperforms Ryzen 7 5825U by 316% based on our aggregated benchmark results.

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Pros & Cons Summary

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Performance score	49.43	11.89
Recency	15 March 2021	6 January 2022
Physical cores	48	8
Threads	96	16
Power consumption (TDP)	225 Watt	15 Watt

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Should you still have questions on choice between EPYC 7643 and Ryzen 7 5825U, ask them in Comments section, and we shall answer.

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