EPYC 9655 vs Ryzen 9 9900X

VS

Primary details

Comparing Ryzen 9 9900X and EPYC 9655 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking108not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation63.62no data
Market segmentDesktop processorServer
Power efficiency27.28no data
Architecture codenameGranite Ridge (2024)Turin (2024)
Release date15 August 2024 (less than a year ago)10 October 2024 (less than a year ago)
Launch price (MSRP)$499$11,852

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 9900X and EPYC 9655 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 cores12 (Dodeca-Core)96
Threads24192
Base clock speed4.4 GHz2.6 GHz
Boost clock speed5.6 GHz4.5 GHz
L1 cache80 KB (per core)80 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache64 MB (shared)384 MB (shared)
Chip lithography4 nm4 nm
Die size2x 70.6 mm212x 70.6 mm2
Maximum core temperature95 °Cno data
Number of transistors16,630 million99,780 million
64 bit support++
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 9900X and EPYC 9655 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
SocketAM5SP5
Power consumption (TDP)120 Watt400 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 9900X and EPYC 9655. You'll probably need this information if you require some particular technology.

Instruction set extensionsSMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4Ano data
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 9900X and EPYC 9655 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 9900X and EPYC 9655. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon GraphicsN/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 9900X and EPYC 9655.

PCIe version5.05.0
PCI Express lanes24128

Pros & cons summary


Recency 15 August 2024 10 October 2024
Physical cores 12 96
Threads 24 192
Power consumption (TDP) 120 Watt 400 Watt

Ryzen 9 9900X has 233.3% lower power consumption.

EPYC 9655, on the other hand, has an age advantage of 1 month, and 700% more physical cores and 700% more threads.

We couldn't decide between Ryzen 9 9900X and EPYC 9655. We've got no test results to judge.

Note that Ryzen 9 9900X is a desktop processor while EPYC 9655 is a server/workstation one.


Should you still have questions on choice between Ryzen 9 9900X and EPYC 9655, 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 9900X
Ryzen 9 9900X
AMD EPYC 9655
EPYC 9655

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.


3.5 122 votes

Rate Ryzen 9 9900X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.2 12 votes

Rate EPYC 9655 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Ryzen 9 9900X or EPYC 9655, agree or disagree with our judgements, or report an error or mismatch.