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+--- Thread: hashcat speed when using a text file of NTLM hahes (/thread-12476.html)
hashcat speed when using a text file of NTLM hahes - remoteview - 01-18-2025
Hi all,
We built a crackstation. When passing a single NTLM hash to hashcat, I average around 1200 GH/s. However, when I change the hash to a text file containing two NTLM hashes, the speed drops to around 500 GH/s. When I change the hash to a text file containing 25,000 NTLM hashes, the speed again drops to 500 GH/s. This doesn't seem right and I wanted to inquire if anyone has tips or suggestions.
Thanks!
RE: hashcat speed when using a text file of NTLM hahes - penguinkeeper - 01-18-2025
Nice speed! This is perfectly normal and is due to some of the optimisations that are lost when you go from a single hash to multiple. With a single hash, we can reverse parts of it so most of the time, your GPU(s) don't actually need to perform the full hashing calculations, whereas for 2 or above hashes, Hashcat can't do some of these optimisations, like the one I mentioned, called "Early Skip".
RE: hashcat speed when using a text file of NTLM hahes - remoteview - 01-18-2025
Thank you!