GPU password recovery server help?

[SentielX]

I plan on adding two new GPUs to my old gaming rig that I converted over to a small gpu server with two 980ti. The cpu is a i7-5820k which only has 28cpu lanes, which from watching the sli video I understand it wouldn't support more than 2 gpu but in this case the configuration is not using SLI since we are hashing and I want to know if cpu lanes matter when it comes to password recovery?

[Electronics Wizardy]

3 minutes ago, SentielX said:

I understand it wouldn't support more than 2 gpu

You can run 3 gpu's If you want lots of lanes cheap get a quad core xeon.

 

3 minutes ago, SentielX said:

I want to know if cpu lanes matter when it comes to password recovery?

Lanes don't matter. Also don't brute force passwords.  its useless unless the password is very simple.

[SentielX]

1 minute ago, Electronics Wizardy said:

You can run 3 gpu's If you want lots of lanes cheap get a quad core xeon.

 

Lanes don't matter. Also don't brute force passwords.  its useless unless the password is very simple.

Thanks for the fast reply! That is perfect I am building a 7gpu titan server (hopefully) so this helps a lot as well. I never brute force a password for a customer I 110000% agree with your statement about it being useless. It's better to have great wordlist and rules and to do research on your customer to get their pattern down. At least in my exp that's how it has worked out for me.

[Electronics Wizardy]

4 minutes ago, SentielX said:

Thanks for the fast reply! That is perfect I am building a 7gpu titan server (hopefully) so this helps a lot as well. I never brute force a password for a customer I 110000% agree with your statement about it being useless. It's better to have great wordlist and rules and to do research on your customer to get their pattern down. At least in my exp that's how it has worked out for me.

What os and program and you using.

 

With linux, you can do opencl over IP, so buy some cheap boards that hold 2-3 gpu's, put a cheap 32gib infiniband nic, and boom now you have a ton of opencl power over the network.

[SentielX]

4 minutes ago, Electronics Wizardy said:

What os and program and you using.

 

With linux, you can do opencl over IP, so buy some cheap boards that hold 2-3 gpu's, put a cheap 32gib infiniband nic, and boom now you have a ton of opencl power over the network.

On the headless server it will be kali Linux 2016.2 using hashcat 3.10 if I remember correctly. I like the idea of building a cluster.... ummm gears are turning! thank you!

[Electronics Wizardy]

5 minutes ago, SentielX said:

On the headless server it will be kali Linux 2016.2 using hashcat 3.10 if I remember correctly. I like the idea of building a cluster.... ummm gears are turning! thank you!

Id stay away from kali. Its just debian with stuff installed, and is know for not having good servers. Its good for a live disk, but not for a server/desktop.

[SentielX]

2 minutes ago, Electronics Wizardy said:

Id stay away from kali. Its just debian with stuff installed, and is know for not having good servers. Its good for a live disk, but not for a server/desktop.

LMFAO you got no idea the fights I've had with that OS.... its so picky! specially for servers. My desktop has been ok my laptop strictly live disk or vm. I have to look up a lightweight OS then any recommendations? I'm by no means an expert so any advice is welcomed

[Electronics Wizardy]

1 minute ago, SentielX said:

LMFAO you got no idea the fights I've had with that OS.... its so picky! specially for servers. My desktop has been ok my laptop strictly live disk or vm. I have to look up a lightweight OS then any recommendations? I'm by no means an expert so any advice is welcomed

Debian. ITs whats kali is based off and known for being stable.

[DXMember]

lol... a little password recovery server that's bruting passwords on GPU array?

http://arstechnica.com/security/2012/12/25-gpu-cluster-cracks-every-standard-windows-password-in-6-hours/

 

And you can run do 3-way SLI for gaming with that CPU

and you can do your password "recovery" with 4 and 8 GPUs if the motherboard supports it

[SentielX]

15 minutes ago, DXMember said:

lol... a little password recovery server that's bruting passwords on GPU array?

http://arstechnica.com/security/2012/12/25-gpu-cluster-cracks-every-standard-windows-password-in-6-hours/

 

And you can run do 3-way SLI for gaming with that CPU

and you can do your password "recovery" with 4 and 8 GPUs if the motherboard supports it

I saw that post when it came out its pretty epic! waayy to crush my hopes and dreams  what i plan is no where near 25GPU. I will be good with 7 and if I need to expand I can do 7 more total of 14 but that is it. I'm just debating on titans or either waiting for the 1080ti to come out and see the hash results and price lol. Again thank you everyone for the help you guys rock! If you need to use the server or other services let me know! more than happy to help

[DXMember]

10 hours ago, SentielX said:

I saw that post when it came out its pretty epic! waayy to crush my hopes and dreams  what i plan is no where near 25GPU. I will be good with 7 and if I need to expand I can do 7 more total of 14 but that is it. I'm just debating on titans or either waiting for the 1080ti to come out and see the hash results and price lol. Again thank you everyone for the help you guys rock! If you need to use the server or other services let me know! more than happy to help

if you want compute I'd suggest Hawaii GPUs (R9 290/X or R9 390/X)

or if you want nVidia then something from Tesla lineup, lol...

the GPUs you chose do not have a good compute performance, they're gaming cards

 

https://litecoin.info/Mining_hardware_comparison

[SentielX]

Just now, DXMember said:

if you want compute I'd suggest Hawaii GPUs (R9 290/X or R9 390/X)

or if you want nVidia then something from Tesla lineup, lol...

the GPUs you chose do not have a good compute performance, they're gaming cards

 

https://litecoin.info/Mining_hardware_comparison

https://gist.github.com/epixoip/a83d38f412b4737e99bbef804a270c40

For hashing the new pascal arch is great in my opinion, I'd just like to offer my customers a better turn around time. Hence why either the titan pascal or GTX 1080 series will work for their price range. I'm still going to wait for the GTX 1080 ti to be released and their hash rate, if its not that different from the titan then I rather pay the $1200 for the titans. Still thank you for the link and it does have some good info. I will post pics and benchmarks for what ever system I go with stay tune.

[SentielX]

Well I got 3 GTX 1080 GPUs in 4th in the way and 2 more coming soon. Testing temps on open air config. Waiting to see which case I buy. Here is one pic...

 I got specs up on my youtube channel but who the hells wants to sit through a video right!?

Ok so right of the bat for those that are going to ask about WPA it still slow AF lmfao so forget about it

Temps hovered in the high 70s and mid 80s with the middle GPU being cramped in there so I got a raiser and now the temps on all 3 GPU are in the mid 70s Celsius.

Will test with titans and 1080 ti in the future 

MD4=124Gh/s

MD5=7743.5Mh/s

NTLM=122.3Gh/s

WPA=1200Kh/s

 

 

[SentielX]

Thank you to everyone for their advice you guys rock!