First Build

[teknikk7]

Hello,

Looking to build my first system for MD5 cracking using bruteforce.  I have a mining rig I'd like to convert. I have a 1600W PSU and mining motherboard with dual core CPU and 4 - RTX 3090's.  I'd like to use the cards and PSU. Ive seen various builds and they range wildly.  I'd imagine I need a whole new mobo and CPU with RAM maxed out...? Can anyone recommend some parts to have a decent build mainly for MD5.

Also, this unit will be housed in a climate controlled office. Noise doesn't matter...

Thank you

[powermi]

Apparently you have everything for start with Hashcat.

send a picture for enjoying the beautiful scene of 4x 3090 working together.

cheers.

[undeath]

Generic recommendation for hashcat rigs: RAM >= vRAM, CPU cores >= GPUs and use as much PCIe lanes for the GPUs as possible. Not x1 ones like common in mining rigs.

If you only do mask attacks you might get away without respecting those recommendations.

[teknikk7]

Generic recommendation for hashcat rigs: RAM >= vRAM, CPU cores >= GPUs and use as much PCIe lanes for the GPUs as possible. Not x1 ones like common in mining rigs.

If you only do mask attacks you might get away without respecting those recommendations.

Have any recommendations for mobo and CPU?  Going by the RAM recs, I should use 32GBX4.

Thanks

[teknikk7]

So I almost have everything ordered.  Im curious about NVLink.  Is hashcat written to take advantage of this feature? I saw one company advertise a $28,000 machine with 4 3090's.  They state a significant boost using NVLink (20%).  But again, this is for some deep learning software.  Not sure it would apply here...

[undeath]

NVLink would hold no benefit for hashcat. Cards don't need to communicate with each other. Sounds like they relabeled the old SLI stuff.