Just remember to have a beefy enough CPU with atleast 2 cores to supply work for those GPUs, specially if you go 2x7990 or more. And as I said earlier, 4GB of RAM is not enough for that amount of GPUs on anything else than SHA256 mining. Plan on having +1.5GB/GPU of RAM (7990 might need +3GB/GPU) for scrypt. You can find more info in scrypt mining in other topics regarding CPU and RAM requirements.
Corsair 1200AX is something to consider, someone said not to cheap on a PSU and still they offer 1000W unit when you talk about top-end 7990s and 7970s
I'm using my rig also for hashcat so I understand your point of not making just a bitcoin miner. I used to run BOINC too some time ago.
Corsair 1200AX is something to consider, someone said not to cheap on a PSU and still they offer 1000W unit when you talk about top-end 7990s and 7970s
I'm using my rig also for hashcat so I understand your point of not making just a bitcoin miner. I used to run BOINC too some time ago.
Thanks for the input! I am probably going to use an AMD 6-8 core processor to start with considering that they are realtively cheap and have a good general utility for the cost (of course with an open system design such as test-bench, this can be swapped out on a whim if a more powerful CPU is ever needed for anything). RAM, being one of the cheapest components, I was looking at 8GB minimum which also adds to the multi-use aspect. I will also check out the Corsair you recommend.
That hashcat looks pretty cool, I had not seen that before. I am hoping to get back to BOINC at some point, I would really like to have three to five rigs to cover differing specialties at some point i.e. a miner, HTPC, BOINC, General Use, but that is not happening anytime soon which is why multi-use is important to me.