02-26-2019, 06:57 AM
FWIW, I'm running several repurosed mining rigs with hashcat, all cards are still on the 1x risers.
The main bottle necks I've hit are with the low RAM situation and craptastic CPUs (4G ram and a celeron, yea baby). With those abyssmal specs I can still peg the GPUs on a fast hash and large wordlist and ruleset. Using a stright wordlist without a lot of ram, a fast CPU, and 1x PCI is going to be horrible, rules or masks are needed.
Another hitch is hashcat running out of ram, this happens quickly when using a large wordlist and a large ruleset (eg rocktastic and oneruletorulethemall). Solution is adding a large swap space.
Now, this is very slow to start up, but, once it does start the cards (6 gtx1070) are running flat out. This setup sucks, but it does work!
I'd throw as much money as you can at the rig, but if you want to save some $$ and grief, I've had very nice results with 32G RAM and an i5. The cards will still starve out with a straight wordlist on PCI 1x doing NTLM, but really with a hash that fast it's silly not to use a ruleset by default (just be sure your rules have the ':' at the top).
If you want to get experimental with kw generator or prince, you'll need to make sure you have CPU cycles and ram to work with.
I've only noticed 1x being an issue with the faster hashes, but then again I haven't tried *everything*.
The main bottle necks I've hit are with the low RAM situation and craptastic CPUs (4G ram and a celeron, yea baby). With those abyssmal specs I can still peg the GPUs on a fast hash and large wordlist and ruleset. Using a stright wordlist without a lot of ram, a fast CPU, and 1x PCI is going to be horrible, rules or masks are needed.
Another hitch is hashcat running out of ram, this happens quickly when using a large wordlist and a large ruleset (eg rocktastic and oneruletorulethemall). Solution is adding a large swap space.
Now, this is very slow to start up, but, once it does start the cards (6 gtx1070) are running flat out. This setup sucks, but it does work!
I'd throw as much money as you can at the rig, but if you want to save some $$ and grief, I've had very nice results with 32G RAM and an i5. The cards will still starve out with a straight wordlist on PCI 1x doing NTLM, but really with a hash that fast it's silly not to use a ruleset by default (just be sure your rules have the ':' at the top).
If you want to get experimental with kw generator or prince, you'll need to make sure you have CPU cycles and ram to work with.
I've only noticed 1x being an issue with the faster hashes, but then again I haven't tried *everything*.