Walked into my mining room today and smelt something burning badly. I immediately shut down my farm and checked each rig. After 25 minutes, I found where the smell was coming from…
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This rig is running 6 x Sapphire 390 Nitros, with two Corsair AX1200i PSUs + Add2PSU, an H81 Pro BTC mainboard, and unpowered riser cables. Many people in the past said if you add additional power to this particular mainboard via the molex connectors on the main board, you won't need to use powered risers. Well, this is what happens after a few weeks of mining without the powered risers…
Maybe if I was using less powerful cards such as the 280X/380X, the unpowered riser setup would work okay, but I guess the 390 just demands too much power. Now I have a PSU that has melted connectors on both sides, the connector that connects the additional molex power has also melted, and the ATX power connecter on the main board has melted. One rig down and a valuable ~200MH of hashing power gone to waste.
One PSU and one main board now have to go for RMA. Not even sure if they will accept it when they see all the melted connectors. FML. I'm considering this a lucky catch - lucky in the sense that nothing went on fire!
Lesson learnt for today? - ALWAYS use powered risers, regardless of whether they say its needed or not.
This rig is running 6 x Sapphire 390 Nitros, with two Corsair AX1200i PSUs + Add2PSU, an H81 Pro BTC mainboard, and unpowered riser cables. Many people in the past said if you add additional power to this particular mainboard via the molex connectors on the main board, you won't need to use powered risers. Well, this is what happens after a few weeks of mining without the powered risers…
Maybe if I was using less powerful cards such as the 280X/380X, the unpowered riser setup would work okay, but I guess the 390 just demands too much power. Now I have a PSU that has melted connectors on both sides, the connector that connects the additional molex power has also melted, and the ATX power connecter on the main board has melted. One rig down and a valuable ~200MH of hashing power gone to waste.
One PSU and one main board now have to go for RMA. Not even sure if they will accept it when they see all the melted connectors. FML. I'm considering this a lucky catch - lucky in the sense that nothing went on fire!
Lesson learnt for today? - ALWAYS use powered risers, regardless of whether they say its needed or not.