first off those molex connected to the motherboard aren't needed if your using powered risers which by the looks of the pics you are, so you know you can kill your hardware under certain circumstances
Well before i use gigabyte gaming 3 without molex
stock rom - card freez after 5/6 h mining
oc rom - card freez after 1 h
not inaf power Vol at pci-e.
vdrop+ rom - card freez or system crash after 15 min
i change for asrock h81 and all good at xmr. are u sure disconect this molex ?
try using the original bios.. make a copy of it and tweak that bios.. use HWINFO and see for any GPU memory error.. make sure no memory GPU error.. i got 1 card that cannot use other bios.. had to remake and tweak it until get 0 GPU memory Error. after that all clear.. now already 4day non stop running without any crash..
Will try now.
Well but ..
1. Format and instal fresh system
2. Install Crimson 16.6
3. Instal amd skd 3.0
5. System update drivers and at system no error 41/31 all GPU work ok.
6. Start miner
7. All gpu show 29 mh/s +
9. efry one shares one gpu going down with has
10. after 5 mins one gpu show 4.50 mh/s - turn off at miner
11. leave for night for mining ETH.
12. Today morning - After 7 h mining ETH at 5x480 (1-off) all works 147 mh/s with 800 wats at wall
the sam card make problem. Try reflash for stock oryginal and i make test - result put here when finish
This is because Monero algo is not so resource hungry, it can run with very high core clock with no issues, but if you put eth or zec, which uses much more power and heavy loads the gpu core, it crashes. You have to low your gpu speed or you need to up the voltage of this card, to fix the problem! If you take a look at msi afterburner you will notice that every 480 card at the same speed has different core voltage! So up the voltage of the card and you will be good to go!
As for the power draw, it is the same reason, they are just much more heavy for the gpu and draw more power!
Well i dont use msi or strixx but wull try. But how u explain this if i switch off card all works fine ? All cards have the same rom .. all cards was flash the same method and platform and time ;/ ... I understound if all card crash .. but why just one ?
When i change klick bios for OC + (1344-200 i thing dont remeber) rebot and start miner .. zcash show nice result 305 kh/s but after 15 min i se in Monitor bad display some like bad pixel when i open a folder was lots of shit arround window.. like crash but all works .. mining no freez just display some shit.