thecatch wrote:Hello i'm planing to build a mult gpu workstation with the max amount GPU you can fit in to it without cutting or other modding if possible.
I have 2x1080 that are hybrid watercooled from EVGA and a 750W seasonic unit lying around. If those components can be of use that would be great, if not then i'l get everything from scratch.
The ideal answer would be the cpu + mobo for the max amount of gpu's and the needed wattage for it to work. Thanks,!
If you'll be using the system only for Octane rendering then you should be able to use your Seasonic PSU in almost any event. If you need more power than the Seasonic yields, then PSUs, like your Seasonic, can be used additively if other than the one powering the motherboard, they are connected by a dual multi-power supply appliance such as this - [
https://www.ebay.com/sch/i.html?_from=R ... r&_sacat=0 ], but you must install it so that it doesn't cause an electrical short. This device prevents you from always having to turn on the PSUs in the power chain serially (turning on the PSU connected only to a few of the GPUs first, then powering up the computer by next powering on the PSU that additionally powers up the motherboard)
*/. But please keep in mind that a few other 3d renderers stress the GPUs more than Octane does and fewer still 3d renderers also allow simultaneous GPU & CPU rendering, requiring much more power. If you are using just 2 to 4 GPUs then explore single CPU i7 motherboards with four double wide spaced PCIe slots so you'll have room to add up to 2 more GPUs in the future. I'm using a few old Gigabyte X79 systems, each in Silver Stone Raven 3 cases, each with i7s such as with i7-4820k's, for 4 GPU tasks, but none of them are using GPUs with hybrid watercooling. Using hybrid water cooling demands that you pay a lot of attention to whether the case has sufficent grill surfaces close enough to the GPUs to attach the radiators to exhaust the heat from each radiator outside of the case. If I were using hybrid GPUs I'd prefer first a case which would allow me to exhaust the GPU radiators' heat out the rear of the case at as low to ground level as possible and allowed me to induct as much cool air blowing from front to rear as possible. I don't have any particular case in mind that satisfies this first preference. However, secondly I'd then prefer a case with as much front (and top) grill space as possible to exhaust all, or as much as is possible, heat out of the front and top of the case. Here's one 8 fanner for your consideration (
https://www.newegg.com/Product/Product. ... lsrc=aw.ds ;
http://www.corsair.com/en-us/obsidian-s ... r-atx-case ). But I can't vouch for it since I've never tried or seen one up close; so you should read all the user reviews and try to find one that, at least, accomodates the hybrid GPUs that you currently own.
If you want to build a system to run more than 4 GPUs in it, just let me know; but that may likely involve a lot more modding or your paying even more money for a system specifically made for that purpose, e.g.,
viewtopic.php?f=40&t=62487&start=10#p324880 .
*/ You connect the dual multi-power supply appliance's sata male connector to a female SATA port on your master PSU's sata cable and connect your GPU-only power supply's main male motherboard connector to the dual multi-power supply appliance's female motherboard connector. I wrap all of my dual multi-power supply appliances completely in two or three layers of electrically insulated tape and check them periodically for security.
Because I have 180+ GPU processers in 16 tweaked/multiOS systems - Character limit prevents detailed stats.
