mark0spasic wrote:Hi Resmas, thank you for info about results with risers, could you tell me what model of risers you have? Maybe give some link, I`m planing to buy but I`m not sure which one. Thank you
hello mate, well in this test i was using the ribbon Pci 16x to 1x Powered risers, brand Flyconn, like this:
I have tested several setups...but with not the best success.
My gpus are trully insane
....hehe...they draw a lot of power and they are very hot. Taking in consideration that gtx590 is from 2011, the power management is not the best...so risers and motherboards are very punished. And many erro43 happens(Windows OS), random crashes and Octane freezes.
My personal workstation can take on almost everything, I'm very happy with it and is from 2011. with some power and gpu pgrades in this last year.
The Asus WS Revolution p8p67, its truly amazing board...with 4 pci x16 slots and 3 pci x1 slots allows a lot of configurations and tests. Its very stable and it was the best part of the workstation. Allowed me crazy setups...and lots of fails without destroying the components.
I can plug 4 gtx590 (double slots, and 8gpus) and it runs like a charme. But because they suck air from the middle and draw the hot air to the back and to inside the case....it gets insanely hot ina few minuts. So risers is the solution.
Risers and gtx 590 is also insanely hard....
because of the power they draw.
In my system I have tested usb risers x1, ribbon risers x1(powered),ribbon risers x1(unpowered),ribbon risers x16(powered),ribbon risers x16(unpowered)....some worked...another didn't. The strange part is that they all did work at some point but not with full system.
I belive that with another GPUs its simple and more straightforward but with 590 its hard.
my 2nd system (still in beta testing....lol) is a simple render machine. The point is to get the max rendering power from little
cost, and in the case of 1 system failure I can switch to the other to continue working.
Asrock BTC h81 - intel i5 4590 - 8gb ram - 120gb ssd
In here the problems are bigger, I don't think that the aAsrock can handle the power draw from the 590. I have tested almost everything I can imagine from, usb to ribbon the best setup I managed to get there is 3 gtx 590 running ( 1 pluged in the motherboard and the 2 other out with ribbon pci x1)
I will see how much I can put in there to make it stable.
Considereing the risers, I belive that almost all work, depending on you system but go to powered ones, because its safer...I got 1 time the smell of fire and never used the non-powered.
From the x1 options go to USB type they are simple to use...bigger cable. I have some problems with them...some work in my workstation and not in the 2nd system....and vice versa...so is a compatibility issue.
about performance....rendering power is the same....loading times are different.
Using SU pluggin and Blender, im allways closing and opening the live Octane Viewport, so you notice the difference. (but is a only a few seconds depending on the model size)
What I do is use the GPUs that are connected to the x16 motherboard slot to live editing, and when I want to render final images I
just enable all gpus.
in this test:
3 gtx590 connected to MB x16 score around 311
2gtx590 connected MB x16 and another gtx590 in
a riser x1 the score is around 308I done it with a USB riser and with a Ribbon riser (both pci x1) and the score is the same. So loading times are equal in pci x1 risers (USB and Ribbon)
cheers
resmas