05-13-2024, 05:34 PM
(05-10-2024, 01:19 AM)Chick3nman Wrote: Unfortunately, there's not a lot of other people active on here that work as closely with the hardware as I do, so a lot of the relevant posts will be from me. I'm not sure why you would think that bus speed isn't important to cracking, the transfer of candidate data from the host to the GPU happens across the bus and it usually ends up being one of the largest sources of bottlenecking, aside from work distribution issues. It's detailed a bit more thoroughly in the hashcat FAQ here: https://hashcat.net/wiki/doku.php?id=fre...king_speed
Hello Dear Chickenmann. I strongly appreciate your determination to the things you are involved to. Your posts have answers on many hash-cracking-related questions. I would like to ask you a straight question. I know there are many many things which impact on speed , but it will try to explain :
I am going to expand my rig which consists of :
2x4090 on x16 pci's
i7 13700k
64gb ddr5 ram
I want to make new one on asus server motherboard with
4 x 4090 connected via 8-16x PCIs
i7 14700k
64 or 128 GB of ram ? 1)I would be so gratefull if you could advice me here
I am using hashcat for 2 types of attack
phpass (mode 400) with large wordlists (like 10 billion strings)
md5 (mode 0) mask attack , like ?a?a?a?a?a?a etc
On my 4090 , using -m400 I have 12kH\s speed\per one . (md5 -- like about 68 GH\s)
2 cards = about 24000 So my aim is to get at least 1.8-1.9x on speed by adding 2 cards.
2)Would not be that a problem for i7 14700k to work with 4 GPUs on those attack modes ?
That is all.
If you just say "14700 will bottlenceck 4 cards " -- I skip this idea. (or just make 4k more bucks for Threadripper)
If you say like "yes 14700k is strong enough and you just need 128 RAM (or do not need)" -- I will make that rig in 2 weeks and name it into your honor. I have laser engraving machine so I will engrave your nickname on the box with 4 gpus
P.S what about bus speed? I decided making that rig on 1x PCI's is wrong idea, so I am not even looking at it as a variant. I am currently inquiring about possibilty to make that on normall motherboard.
Execuse me for being noobish in some terms, but I tried to elaborate that the most clearly.
P.S.S If I disconnect 1 GPU now, and try running md5 or phpass hash mode -- speed is not incrasing, so I could make a conclusion, 13700 is not bottlenecking 2 GPUs