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Hey all!
I have been thinking about getting some time on AWS's beastly GPUs basically as a test to see how fast a really killer GPU might crack some hashes. They have the following GPU's available:
NVIDIA Tesla V100 GPU
NVIDIA K80 GPU
Just curious if these are compatible and if so, what kind of speed would you expect with either of these for say, a NTLM hash?
Also, they have an option for two of the K80s at about the same price point as 1 of the Tesla guys. Is two better than one in this case?
Thanks!
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(06-23-2020, 11:12 PM)led5150 Wrote: Hey all!
I have been thinking about getting some time on AWS's beastly GPUs basically as a test to see how fast a really killer GPU might crack some hashes. They have the following GPU's available:
NVIDIA Tesla V100 GPU
NVIDIA K80 GPU
Just curious if these are compatible and if so, what kind of speed would you expect with either of these for say, a NTLM hash?
Also, they have an option for two of the K80s at about the same price point as 1 of the Tesla guys. Is two better than one in this case?
Thanks!
K80's are quite old and are not very performant for the price/hour (Or the elelctricity cost). V100's are the way to go for performance per dollar and top-line speed per VM
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Thanks for the info! I'm gonna go for the V100. I'll post here when I get some stats on speed!
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So here's what I got for an unsalted NTLM hash in brute force mode 6 characters min:
Speed.#1.........: 42479.2 MH/s (7.05ms) @ Accel:32 Loops:128 Thr:1024 Vec:8
I'm actually a little underwhelmed, since the record of 100 billion was made on a far cheaper GPU. It makes me feel like somewhere there is a driver issue... but it took me so long to install the drivers that are working now, I don't know if I'm going to stop and retry. Sever rental is expensive!
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I don't know what made you think developer GPUs are superior for hashcracking. They aren't.
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(06-26-2020, 03:59 PM)undeath Wrote: I don't know what made you think developer GPUs are superior for hashcracking. They aren't.
Oh it's because I have no idea what I'm doing. Ha, I found that out the hard way last night. So what makes a GPU better for cracking hashes specifically?
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Hashcat requires good integer performance. Developer cards usually only boost floating point performance, sometimes even at the cost of integer performance. Consumer GPUs are what work best for hashcat.
