EPYC 9755 vs Ryzen 9 7900

Primary details

Comparing Ryzen 9 7900 and EPYC 9755 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	133	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	65.57	no data
Market segment	Desktop processor	Server
Power efficiency	44.48	no data
Architecture codename	Raphael (Zen4) (2022−2023)	Turin (2024)
Release date	14 January 2023 (1 year ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$429	$12,984

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 9 7900 and EPYC 9755 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	12 (Dodeca-Core)	128
Threads	24	256
Base clock speed	3.7 GHz	2.7 GHz
Boost clock speed	5.4 GHz	4.1 GHz
L1 cache	64K (per core)	80 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	64 MB (shared)	512 MB (shared)
Chip lithography	5 nm	4 nm
Die size	2x 71 mm2	16x 70.6 mm2
Maximum core temperature	95 °C	no data
Maximum case temperature (TCase)	47 °C	no data
Number of transistors	13,140 million	133,040 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 7900 and EPYC 9755 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	AM5	SP5
Power consumption (TDP)	65 Watt	500 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7900 and EPYC 9755. You'll probably need this information if you require some particular technology.

Instruction set extensions	5 nm, 0.650 - 1.475V	no data
AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7900 and EPYC 9755 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7900 and EPYC 9755. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR5-5200

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

AMD Radeon Graphics (Ryzen 7000) ( - 2200 MHz)

N/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7900 and EPYC 9755.

PCIe version	5.0	5.0
PCI Express lanes	24	128

Pros & cons summary

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Recency	14 January 2023	10 October 2024
Physical cores	12	128
Threads	24	256
Chip lithography	5 nm	4 nm
Power consumption (TDP)	65 Watt	500 Watt

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