cpuminer-opt-3.14.0: CPU Mining With the cpuminer-opt Free and Open Source Miner

cpuminer-opt-3.14.0: CPU Mining With the cpuminer-opt Free and Open Source Miner


It has been a long time since we last covered the cpuminer-opt v3.8.4 software, but the good news is that its development has not stopped, and this should probably be your step to the miner, if it comes to about cryptographic coins that can be mined using a processor.

cpuminer-opt is an open source processor mining software that supports many algorithms, and the list is growing, although at the moment you are likely to use only a couple of them. The miner has optimizations for old and new AMD and Intel processors, so be sure to try the binary file designed for your processor for the best results or feel free to experiment.

An alternative that is often useful in terms of processor mining is SRBMiner-MULTI 0.4.4, which supports fewer processor mining algorithms, but some of them can be more optimized compared to cpuminer-opt, and also has support for RandomX algorithms ( mainly aimed at AMD Ryzen CPU miners). SRBMiner-MULTI, however, is also a closed source miner with a built-in development fee, even if it is proven and trustworthy, some people still prefer to use open source software only for cryptography and not only for that.

Please note miners are often marked as malware by antivirus programs. This is not so, they are marked simply because they are cryptocurrency miners. If you do not trust the software, do not use it!

Changes to solo mining:

  • segwit is supported by getblocktemplate,
  • longpolling is not working and is disabled,
  • Periodic Report log is output,
  • New Block log includes TTF estimates,
  • Stratum thread no longer created when using getwork or GBT.

Fixed BUG log mining sha256d.

Keep in mind that cpuminer-opt is available as a ready-made binary file for Windows only, its source code is available to everyone, no developer fees and is supported only by donations, so if you can pay several coins for free to my friendly software developer: JayDDee (joblo) at Bitcointalk at the following Bitcoin address: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT.


cpuminer-opt is a fork of cpuminer-multi by TPruvot with optimizations imported from other miners developped by lucas Jones, djm34, Wolf0, pooler, Jeff garzik, ig0tik3d, elmad, palmd, and Optiminer, with additional optimizations by Jay D Dee.

All of the code is believed to be open and free. If anyone has a claim to any of it post your case in the cpuminer-opt Bitcoin Talk forum or by email.

Miner programs are often flagged as malware by antivirus programs. This is a false positive, they are flagged simply because they are cryptocurrency miners. The source code is open for anyone to inspect. If you don’t trust the software, don’t use it.


  1. A x86_64 architecture CPU with a minimum of SSE2 support. This includes Intel Core2 and newer and AMD equivalents. Further optimizations are available on some algoritms for CPUs with AES, AVX, AVX2, SHA, AVX512 and VAES.

Older CPUs are supported by cpuminer-multi by TPruvot but at reduced performance.

ARM and Aarch64 CPUs are not supported.

  1. 64 bit Linux or Windows OS. Ubuntu and Fedora based distributions, including Mint and Centos, are known to work and have all dependencies in their repositories. Others may work but may require more effort. Older versions such as Centos 6 don’t work due to missing features. 64 bit Windows OS is supported with mingw_w64 and msys or pre-built binaries.

MacOS, OSx and Android are not supported.

  1. Stratum pool supporting stratum+tcp:// or stratum+ssl:// protocols or RPC getwork using http:// or https://. GBT is YMMV.

Supported Algorithms

                      allium        Garlicoin
                      anime         Animecoin
                      argon2        Argon2 coin (AR2)
                      argon2d250    argon2d-crds, Credits (CRDS)
                      argon2d500    argon2d-dyn,  Dynamic (DYN)
                      argon2d4096   argon2d-uis, Unitus, (UIS)
                      axiom         Shabal-256 MemoHash
                      blake         Blake-256 (SFR)
                      blake2b       Blake2b 256
                      blake2s       Blake-2 S
                      blakecoin     blake256r8
                      bmw           BMW 256
                      bmw512        BMW 512
                      c11           Chaincoin
                      deep          Deepcoin (DCN)
                      dmd-gr        Diamond-Groestl
                      groestl       Groestl coin
                      hex           x16r-hex
                      hmq1725       Espers
                      hodl          Hodlcoin
                      jha           Jackpotcoin
                      keccak        Maxcoin
                      keccakc       Creative coin
                      lbry          LBC, LBRY Credits
                      luffa         Luffa
                      lyra2h        Hppcoin
                      lyra2re       lyra2
                      lyra2rev2     lyra2v2
                      lyra2rev3     lyrav2v3, Vertcoin
                      lyra2z330     Lyra2 330 rows, Zoin (ZOI)
                      m7m           Magi (XMG)
                      minotaur      Ringcoin (RNG)
                      myr-gr        Myriad-Groestl
                      neoscrypt     NeoScrypt(128, 2, 1)
                      nist5         Nist5
                      pentablake    Pentablake
                      phi1612       phi
                      phi2          Luxcoin (LUX)
                      phi2-lux      identical to phi2
                      pluck         Pluck:128 (Supcoin)
                      polytimos     Ninja
                      power2b       MicroBitcoin (MBC)
                      quark         Quark
                      qubit         Qubit
                      scrypt        scrypt(1024, 1, 1) (default)
                      scrypt:N      scrypt(N, 1, 1)
                      sha256d       Double SHA-256
                      sha256q       Quad SHA-256, Pyrite (PYE)
                      sha256t       Triple SHA-256, Onecoin (OC)
                      sha3d         Double keccak256 (BSHA3)
                      shavite3      Shavite3
                      skein         Skein+Sha (Skeincoin)
                      skein2        Double Skein (Woodcoin)
                      skunk         Signatum (SIGT)
                      sonoa         Sono
                      timetravel    Machinecoin (MAC)
                      timetravel10  Bitcore
                      tribus        Denarius (DNR)
                      vanilla       blake256r8vnl (VCash)
                      veltor        (VLT)
                      x11           Dash
                      x11evo        Revolvercoin
                      x11gost       sib (SibCoin)
                      x12           Galaxie Cash (GCH)
                      x13           X13
                      x13bcd        bcd
                      x13sm3        hsr (Hshare)
                      x14           X14
                      x15           X15
                      x16rv2        Ravencoin (RVN)
                      x16rt         Gincoin (GIN)
                      x16rt-veil    Veil (VEIL)
                      x16s          Pigeoncoin (PGN)
                      xevan         Bitsend (BSD)
                      yescrypt      Globalboost-Y (BSTY)
                      yescryptr8    BitZeny (ZNY)
                      yescryptr8g   Koto (KOTO)
                      yescryptr16   Eli
                      yescryptr32   WAVI
                      yespower      Cryply
                      yespowerr16   Yenten (YTN)
                      yespower-b2b  generic yespower + blake2b
                      zr5           Ziftr

Many variations of scrypt based algos can be mine by specifying their parameters:

scryptn2: --algo scrypt --param-n 1048576
cpupower: --algo yespower --param-key "CPUpower: The number of CPU working or available for proof-of-work mining"
power2b: --algo yespower-b2b --param-n 2048 --param-r 32 --param-key "Now I am become Death, the destroyer of worlds"
sugarchain: --algo yespower --param-n 2048 -param-r 32 --param-key "Satoshi Nakamoto 31/Oct/2008 Proof-of-work is essentially one-CPU-one-vote"
yespoweriots: --algo yespower --param-n 2048 --param-key "Iots is committed to the development of IOT"
yespowerlitb: --algo yespower --param-n 2048 --param-r 32 --param-key "LITBpower: The number of LITB working or available for proof-of-work mini"
yespoweric: --algo yespower --param-n 2048 --param-r 32 --param-key "IsotopeC"
yespowerurx: --algo yespower --param-n 2048 --param-r 32 --param-key "UraniumX"
yespowerltncg: --algo yespower --param-n 2048 --param-r 32 --param-key "LTNCGYES"


Old algorithms that are no longer used frequently will not have the latest optimizations.

Cryptonight and variants are no longer supported, use another miner.

Neoscrypt crashes on Windows, use legacy version.

AMD CPUs older than Piledriver, including Athlon x2 and Phenom II x4, are not supported by cpuminer-opt due to an incompatible implementation of SSE2 on these CPUs. Some algos may crash the miner with an invalid instruction. Users are recommended to use an unoptimized miner such as cpuminer-multi.

cpuminer-opt does not work mining Decred algo at Nicehash and produces only “invalid extranonce2 size” rejects.

Benchmark testing does not work for x11evo.

Recommended New Articles:

Leave a Reply

Your email address will not be published. Required fields are marked *