Xaularis Posted April 12, 2016 Share Posted April 12, 2016 (edited) I got a akitio thunder 2 attached to the MBP using included thunderbolt cable. 750ti is used with the akitio thunder 2. Everything works fine until... it restart itself randomly. Sometimes while I was playing a game. sometimes while I using Xcode or other things. Both of the os x and Windows 10 got almost the same symptom. Windows 10 give the driver stop working and has recovered, but the osx give the double restart every time. I used 120 watt psu which can connect to the akitio thunder 2 directly. Anyone got any idea ? Many thanks. Edited April 12, 2016 by Xaularis Quote Link to comment Share on other sites More sharing options...
Dschijn Posted April 12, 2016 Share Posted April 12, 2016 Try and lower the power limit clock speed in Windows with EVGA Precision X or MSI Afterburner. Maybe even the 120W PSU is at its limit with the 750Ti. The card doesn't have any 6-Pin PCIe power plugs on it, right?! Quote Link to comment Share on other sites More sharing options...
Xaularis Posted April 12, 2016 Author Share Posted April 12, 2016 10 minutes ago, Dschijn said: Try and lower the power limit clock speed in Windows with EVGA Precision X or MSI Afterburner. Maybe even the 120W PSU is at its limit with the 750Ti. The card doesn't have any 6-Pin PCIe power plugs on it, right?! No, there is no 6 pin power plug there. Is there solution for OSX ? Quote Link to comment Share on other sites More sharing options...
Dschijn Posted April 12, 2016 Share Posted April 12, 2016 Unfortunately not an easy one. You can try to test the stability with lower power settings in Windows. If you have them you could use that to create a new GPU BIOS and flash that to the card in a normal PC. But please try to find that settigns in Windows. Just to make sure, that it really is a power issue. Quote Link to comment Share on other sites More sharing options...
Xaularis Posted April 12, 2016 Author Share Posted April 12, 2016 I'll try. BTW, thanks for your advice. And can it be the cable issue ? Quote Link to comment Share on other sites More sharing options...
Dschijn Posted April 12, 2016 Share Posted April 12, 2016 Could be multiple things, so we need to test 1 Quote Link to comment Share on other sites More sharing options...
toxec Posted April 14, 2016 Share Posted April 14, 2016 (edited) I have two 2011 macbook pros and have two different akitio2 setups and I started to face the same problem with all different configurations. Egpu randomly restarts the machine or sometimes I return to win10 desktop with a gpu driver error message. I am cross testing two akitios currently but interestingly issue occurs randomly. I have run 2 hour stress tests and they haven't failed but when I play games or do graphical rendering, sometimes it instantly restarts but sometimes it takes several hours before any error. Comparing to several months before (I was using them without any issue) I have updated to latest win10 and using nvdia 364. My scenarios: Electric consumption exceeds power supply - I have one 750 ti and one 970 oc. Both have 220 watt da2 and 4x 4700mf capacitors. 750 ti does not have additional power socket. 970 not used to have any electric issues, during stress tests gpu runs at 94% full performance for the duration of the test (no issue recorded). During heaven benchmarks no issue occurred as well.I am testing with 57% less performance. CPU heat restarts macbook - I see temp tops 100 degrees occasionally. Lowering GPU performance reduces overall cpu heat as well. (CPU temp is my second best bet, couldn't reduce it much) Video Driver Failure - This is my best bet, I will downgrade to older drivers to test. I used to work fine with nvidia 350 - 359 series drivers. GPU Cooling- Not an issue for my setups. Both run at max at 60 degrees. Dell da2 socket - I am using 8 pin socket which is soldered to akitio's board. Maybe some of the pins moved back (I assume not). Cabling - No any issue Edited April 14, 2016 by toxec Quote Link to comment Share on other sites More sharing options...
Xaularis Posted April 14, 2016 Author Share Posted April 14, 2016 Thanks for your sharing, I will try changing the driver. Quote Link to comment Share on other sites More sharing options...
Xaularis Posted April 18, 2016 Author Share Posted April 18, 2016 (edited) I tried to change the driver to the old version (around 343.01.02) which cannot be used due to the version changed. But, I cannot try lower the frequency because I don't have the windows for lowering the gpu freq. Edited April 19, 2016 by Xaularis wrong version Quote Link to comment Share on other sites More sharing options...
Xaularis Posted April 19, 2016 Author Share Posted April 19, 2016 (edited) I've tried flashing the new bios, lower the freq down to 1020 core and 1080 boost, which is around the oem clock, still get the kernel panic. Do you have any idea ? Btw, I tried firestrike 2 times, and got no restart. Edited April 19, 2016 by Xaularis Forgot to quote Quote Link to comment Share on other sites More sharing options...
Xaularis Posted April 19, 2016 Author Share Posted April 19, 2016 Sorry, I forgot to quote. On April 12, 2559 BE at 5:56 PM, Dschijn said: Could be multiple things, so we need to test Oops, so sorry. I was confused with the quote system. Quote Link to comment Share on other sites More sharing options...
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