hashcat Forum

Hi guys,


I don't know why my machine does not take advantage of GPU card capabilities
I have Lenovo Legion Y720 with ‏nVIDIA GeForce GTX 1070 OS: CENTOS 7 Hashcat 5.1

Im trying to crack NTLMv2 password and the working speed of the card is around 850MHz which is a bit slow....

I'm trying the following conmmand : hashcat -m 5600 -a 3 -d 1 <hash.txt> 

The output of hashcat -b is around ~ 19000MHz 

In addition the following message appear :

Cracking performance lower than expected?        
* Append -w 3 to the commandline.
  This can cause your screen to lag.
* Update your OpenCL runtime / driver the right way:
  https://hashcat.net/faq/wrongdriver
* Create more work items to make use of your parallelization power:
  https://hashcat.net/faq/morework

any advice before Im going to reinstall the driver ?

1. running hashcat on notebooks is not recommended
2. you are not specifying a mask
3. did you try the suggestion of adding -w3 and -O ?
4. hashrate is not measured in hertz (lol)

Thanks for your quick answer .
Sorry for the delay . I was on vacation for a week

1- its not a notebook , its a server
2- is it mandatory in order to get more than 64ms speed ?
3- yes , same speed
4-The output is appear in Mhz and also in ms

Lenovo Legion Y720 is a notebook.

"64ms" is not the speed, it's the kernel runtime.

MH/s is not the same as MHz.

Seems weird that you would see the same speed with -w3 and -O. It should at least improve a bit. If it doesn't that may hint to serious heat throttling due to using a notebook. (benchmark is only a short burst workload, hence it doesn't throttle)

(06-30-2019, 10:52 PM)undeath Wrote: [ -> ]Seems weird that you would see the same speed with -w3 and -O. It should at least improve a bit. If it doesn't that may hint to serious heat throttling due to using a notebook. (benchmark is only a short burst workload, hence it doesn't throttle)

regarding the model : Lenovo Desktop Computer IdeaCentre Y720 Cube