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[tomtomy]

RS700A-E9-RS4

2x AMD EPYC 7401 (24 core, 48 thread processors)

  32x Kingston  KSM26RS8/8HAI

If the 2x CPU 7401 run at full load, is it suppose to run at 2.8Ghz or 2.4Ghz?

[globus5000]

# of CPU Cores

24

# of Threads

48

Base Clock Speed

2GHz

Max Turbo Core Speed

3GHz

All Core Boost Speed

2.8GHz

Total L3 Cache

64MB

Socket Count

1P

PCI Express Version

x128

Default TDP / TDP

155/170W

[globus5000]

its that speed both on 1p and 2p epyc

[tomtomy]

globus5000,

it was running at 2p epyc core

[claurie · Accepted solution]

It will depend on the workload you are running. If very intensive with all cores loaded average frequency can be close to the base frequency, if few threads well spreaded across numa nodes it may reach max Turbo for these active cores, if all cores in use average can vary depending on your workload and operating conditions.

[tomtomy]

It was running Prime95. Also with Vray testing. Will it still run at 2.4Ghz?

[tomtomy]

Anything else causing it?

[tomtomy]

I am wondering what condition (i.e full load? idle? system running a program that is optimized CPU) does the EPYC 7401 trigger  ALL Core boost speed of 2.8Ghz?