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I just purchased DEC3940 and it shows weird values about processor: AMD Ryzen Embedded V3C18 8-Core Processor (4 cores, 8 threads)

V3C18 should have 8-cores and that's what Deciso also says in their tech specs about this model. Does anyone have similar model and what it says about CPU?

Where did you see (4 cores, 8 threads)?

# sysctl hw.model
hw.model: AMD Ryzen Embedded V3C18 8-Core Processor

# sysctl kern.smp.cpus
kern.smp.cpus: 8

# sysctl kern.smp.cores
kern.smp.cores: 8

I noticed it first on OPNsense Lobby page and then running multiple those sysctl commands to confirm, that it's just not the GUI showing wrong information. Also when console is attached it is shown during boot. I'm currently away from the firewall so I can't confirm what those sysctl commands show now, but now the Lobby page shows also correct information.

I understand that the HyperThreding could be disabled by default, but default was 4 cores and 8 threads, so the HyperThreading was enabled and cores capped and that sounds weird.

Here is the beginning of the bootlog.

Code Select Expand

Copyright (c) 1992-2023 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
    The Regents of the University of California. All rights reserved.

FreeBSD is a registered trademark of The FreeBSD Foundation.

FreeBSD 14.3-RELEASE-p16 stable/26.1-n272152-9b6eef552f24 SMP amd64
FreeBSD clang version 19.1.7 (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2)
VT(vga): resolution 640x480

CPU: AMD Ryzen Embedded V3C18 8-Core Processor (1896.52-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0xa40f41  Family=0x19  Model=0x44  Stepping=1
  Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x7ef8320b<SSE3,PCLMULQDQ,MON,SSSE3,FMA,CX16,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  AMD Features2=0x75c237ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MS,Prefetch,OSVW,IBS,SKINIT,WDT,TCE,Topology,PCXC,PNXC,DBE,PL2I,MWAITX,ADMSKX>
  Structured Extended Features=0x219c97a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,PQM,PQE,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,SHA>
  Structured Extended Features2=0x40069c<UMIP,PKU,OSPKE,VAES,VPCLMULQDQ,RDPID>
  Structured Extended Features3=0x10<FSRM>
  XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
  AMD Extended Feature Extensions ID EBX=0x191ef657<CLZERO,IRPerf,XSaveErPtr,RDPRU,BE,WBNOINVD,IBPB,INT_WBINVD,IBRS,STIBP,STIBP_ALWAYS_ON,PREFER_IBRS,SAMEMODE_IBRS,NOLMSLE,SSBD,CPPC,PSFD>
  SVM: NP,NRIP,VMClean,AFlush,DAssist,NAsids=32768
  TSC: P-state invariant, performance statistics

real memory  = 34359738368 (32768 MB)
avail memory = 33130860544 (31596 MB)

Event timer "LAPIC" quality 600
ACPI APIC Table: <INSYDE EDK2>

FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 hardware threads

random: registering fast source Intel Secure Key RNG
random: fast provider: "Intel Secure Key RNG"
random: unblocking device.

loapic0 <Version 2.1> irqs 0-23


Well, resetting BIOS to Default and then changing SMT control from Disabled to Enabled made OPNsense to show all cores and threads.

AMD Ryzen Embedded V3C18 8-Core Processor (8 cores, 16 threads)

Now I'm thinking what was the reason for brand new DEC3940 purchased directly from Deciso to have such a configuration on first place? Is there something wrong with this particular device? Is it refurbished, but sold as new? Can I trust it security and hardware wise etc.

I just purchased DEC3940 and it shows weird values about processor: AMD Ryzen Embedded V3C18 8-Core Processor (4 cores, 8 threads)

V3C18 should have 8-cores and that's what Deciso also says in their tech specs about this model. Does anyone have similar model and what it says about CPU?