EPYC 9355 vs Ryzen 9 7940H

VS

Primary details

Comparing Ryzen 9 7940H and EPYC 9355 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking332not rated
Place by popularitynot in top-100not in top-100
Market segmentLaptopServer
Power efficiency48.80no data
Architecture codenamePhoenix (2023−2024)Turin (2024)
Release dateJanuary 2023 (1 year ago)10 October 2024 (recently)
Launch price (MSRP)no data$3,694

Detailed specifications

Ryzen 9 7940H and EPYC 9355 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 cores8 (Octa-Core)32 (Dotriaconta-Core)
Threads1664
Base clock speed4 GHz3.55 GHz
Boost clock speed5.2 GHz4.4 GHz
L1 cache64K (per core)80 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache16 MB (shared)256 MB (shared)
Chip lithography4 nm4 nm
Die size178 mm28x 70.6 mm2
Number of transistors25,000 million66,520 million
64 bit support++
Windows 11 compatibility+no data

Compatibility

Information on Ryzen 9 7940H and EPYC 9355 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 configuration12
SocketFP8SP5
Power consumption (TDP)35 Watt280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7940H and EPYC 9355. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7940H and EPYC 9355 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7940H and EPYC 9355. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5-5600DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon 780MN/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7940H and EPYC 9355.

PCIe version4.05.0
PCI Express lanes20128

Pros & cons summary


Physical cores 8 32
Threads 16 64
Power consumption (TDP) 35 Watt 280 Watt

Ryzen 9 7940H has 700% lower power consumption.

EPYC 9355, on the other hand, has 300% more physical cores and 300% more threads.

We couldn't decide between Ryzen 9 7940H and EPYC 9355. We've got no test results to judge.

Be aware that Ryzen 9 7940H is a notebook processor while EPYC 9355 is a server/workstation one.


Should you still have questions on choice between Ryzen 9 7940H and EPYC 9355, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD Ryzen 9 7940H
Ryzen 9 7940H
AMD EPYC 9355
EPYC 9355

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.2 55 votes

Rate Ryzen 9 7940H on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

No user ratings yet.

Rate EPYC 9355 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Ryzen 9 7940H or EPYC 9355, agree or disagree with our judgements, or report an error or mismatch.