I have a beautiful rig with three r9 Nano cards, all watercooled. However, there really is no decent way to hook a fan to the gpu without modifying the waterblock. Is there something I'm missing (even after extensive googling) that can help me use my computer? It appears that when the drivers don't get a return of the fan speed, they crash, and shortly after the entire computer crashes. It quickly leads to the windows error of "page fault in nonpaged area" and reboots. I may be able to fix the page fault by removing the three cards and booting without them, fixing the paging file and reinstalling all drivers. However, I suspect even after everything works I'll be unable to use cgminer because the lack of fan speed. Is there a simple device I can hook to the fan port after I modify the blocks to access them that will return a generic fan speed? Note: This is not an overheating problem by any means. This all happens entirely too quickly for the GPUs to warm the water in the slightest. I also don't believe mixing the brands of r9 nanos should be a problem as I had them mixed and installed watercooled with the stock fans poorly attached to the GPU fan headers. I was getting approximately 2.5GH/s on each card with the powertuning set to 50% in case anyone was curious about that. Rig stats: ECS Z170-CLAYMORE LGA 1151 XFX ProSeries P1-1250-BEFX 1250W Intel Core i3-6100 3M 3.7 GHz LGA 1151 BX80662I36100 Intel 535 Series M.2 120GB SATA III MLC Internal Solid State Drive 2X SAPPHIRE Radeon R9 Nano 100400SR 1X PowerColor Radeon R9 Nano AXR9 NANO 4GBHBM-DH 3X Aquacomputer kryographics for Radeon R9 Nano Phobya DC12-400 PWM 12Volt pump Generic 240mm radiator cooled by 2x repurposed fans from Antminer S3 1x Crucial 8GB DDR4-2133 (PC4-17000) 1x Crucial Ballistix Sport LT 8GB 288-Pin DDR4 SDRAM DDR4 2400
If you cant turn off the fan speed detect somewhere you might be able to wire up a custom wire harness. 3 fans leads going to 1 fan somewhere else? Typically speed sensing fans have 3 wires. 2 for power and 1 for the sensor. I am not positive if the 1 wire is all that is needed or if it is a combination of power/sensor being sent back to the card/motherboard? I would look at how it is sensing the fan speed and rig that to a fan somewhere. Then make sure you cool your water loop extra well. It the card water cooling lines are all inline the water temp at the 2nd and 3rd card may not be cold enough to effectively cool them.
I also got watercooled rig with 6 cards all working normal. Which OS r u using, which miner, which driver version?
I've disassembled my rig and hooked the fans up to it for troubleshooting. I can't even test cgminer because I can't get the amd drivers installed. I'm thinking it may be that the motherboard, even with five slots, won't work with more than two cards. I'm basically at a loss. It's a z170 claymore and I'm running Windows 10 on an M.2 ssd. When installing the amd drivers after an amdcleanuninstall, the screen goes black. I'm running into too many different errors to list them all, each one would be tldr.
I got catalyst 15.12 installed. also i've added this to the miner --no-adl try get it running at stock speeds etc. to see if it runs stable. Im running win 10 on ssd aswell so don't think its an hd issue.
Try one GPU at first, then 2 if that works. Then 3. That 1250 PSU may not be enough for all the MB and 3 cards. For 3 GPU, MB and water cooled setup you probably need closer to 1500 watts? I am guessing here from previous host builds. I have not built a 3 gpu miner.
I have a watercooled rig with three 290x cards. My Kill-A-Watt reads around 840-850 watts from the wall while mining. I have a 1200W PSU. Of course YMMV depending on which graphics cards you use, but you can compare the TDP of the 290x (~250W) vs your cards to get a rough estimate of your expected power consumption. A 1250W PSU should handle most 3 GPU setups unless you're running 7990 or 295X type of cards.
R9 Nanos use less power than 290X cards, so a 1250W PSU should be more than enough. When I was still doing PoW mining I was running an R9 Nano and an R9 290X and combined power usage was only 650W.
I'm 90% sure that my motherboard (with five pci-e 3.0 x16 slots) is only capable of running two video cards. REALLY disappointed in that. I suppose I'll have to put the original fan and heat sink back on one of my 3 nanos and heat my bedroom up like I had been before. Stake mining is earning me more than POW ever has anyway though. And doesn't cost any electric! Woot!