Topic: 8 GPU Mining Rig : IS THIS CORRECT? (Read 753 times)

Ah ok
taking that in consideration, Ill add an other PSU .
Thanks

Thank u this is quite helpful, its less expensive.

Thank u Ill think about 2

I have a rig that is running 6 GPUs just fine with that PSU. I have a 7th card installed, but it just wont stay online. I will be swapping it out for a G2 1300 tomorrow to see if that fixes that. I know that it is running at least 1000 watts with just 6 cards, so i would suggest going with a dual PSU setup.

I have been experimenting with dual PSU rigs as well due to the shortage of the very popular G2 1300w PSU. I have 2 rigs that are nearly identical running 2 different PSU setups. 1 with 2x eVGA P2 750w and another with 1 eVGA P2 750 and a 1200w HP server PSU.

From what i have read you want all the risers powered by the same PSU as the MB/CPU. It works for me. Some good reading here: https://bitcointalksearch.org/topic/multiple-psus-and-grounding-57914

With the dual 750w setup, there aren't enough plugs to run all the GPUs on the secondary PSU (without splitters), so i have a 3 on the primary, and 4 on the secondary. Unfortunately the primary is pulling 740w, so it is not at peak efficiency.

For the other rig, i have the server PSU running all the GPUs, and all the risers/MB/CPU running on the primary 750w. Note that this way the primary PSU is only pulling 450w or so. You can get the server PSU for a good price here:  http://www.parallelminer.com/product/hp-1200-watt-power-supply-kit-for-gpu-mining-platinum-94-zec-dash-eth/ I prefer this method, and have ordered several more of these server PSUs for upcoming builds. The only thing to remember is to power on secondary first, and primary last. When powering down, it is reverse. Power off the primary first, and then the secondary. That's it!

It depends on the GPU's and if you plan on dual mining. I recently did a build of the BBT mining case below out of two 8ft pieces of 1/8" x 3/4" angled aluminum, one 8ft 1" x 2" piece of pine and #8 1/2" self-tapping screws. The case will fit up to 7 RX 4XX/5XX if you put them about 1 inch apart. For 8 GPU's I would increase the length of the longest frame section by 4 inches from 19.2 to 24 inches and I would also increase the frame height by 2 inches from 9.25 to 11.25 inches, which means you will need to use three 8ft pieces of 1/8" x 3/4" angled aluminum instead of two.

https://www.youtube.com/watch?v=D5xNrlxsCVs

The only tools needed were a drill with a 3/32" hex titanium drill bit to drill pilot holes and a #2 phillips screwdriver bit. A hacksaw with a 32 tooth blade and a plastic miter box to cut the aluminum and wood. It took about 4-5 hours since it was my first time building one. The case is very sturdy and can support up to 7 GPU's. You could also use wood or 1/16" angled aluminum pieces if you want to save money. Way cheaper and quicker than ordering a case online.

I would probably opt for a 1500w or two 750w PSUs. 1200 may work, but it'll definitely be pushing it.

Depending on what spacing you want, ~24" width should fit 8 with a couple of inches in between.

Hi, after more than 2 weeks going through Internet, I finally order items for building my 8 GPU rig (Thanks to Nokia555 and NetopyrMan for the suggestions), Ive choosen gigabyte gtx 1070 g1 gaming rock edition, for the PSU I ordered Corsair AX1200i (1200 W).

- Is this PSU enough for the 8 GPUs?
- Please if somebody have mesurement to build 8 GPU frame?

Thank u.