Crossfire Vega 64 issues

[Dafriz]

I know this will sound a bit weird but here is a confusing issue

 

two vega 64's trying to play nice with a intel 2600k

 

(please note this is temporary... had an odd issue with my motherboard that was sent out for RMA and just got the 2nd vega on a sale and trying to get crossfire to act at least stable for most of the time while not playing games then test in games)

 

issue I have is (right now) windows only sees 1 graphics card -   i managed to break windows last night and it saw 2 and worked for a while but it went back to being yea... weird

crash here , crash there, now stable boot... light shows up that it should be running crossfire especially considering I feel quite warm right now... but windows sees 1 card and catalyst center doesn't detect it either...

 

not sure what is causing this and until i get my x399 board (or new one) back I feel I won't be able to really test this out

 

so..... anyone seen this in action somewhere or any thoughts/ideas that may be the cause of the 2nd gpu not showing up ???

 

 

(also... if anyone wants to know the vega 64's are meant for something other than gaming so please no you should of bought a 1080ti or something...)

[GamerDude]

Didcha try swapping the cards? I mean taking the detected card out and swapping positions with the 2nd card? This is to eliminate the possibility of faulty card. What mobo are you using? I have two VEGA 64's in CF myself, on an X79 mobo that gives me dual PCIE x16 3.0 lanes, no issue so far. I did have an issue with one card going into ULPS (Ultra Low Power State) mode which did cause a crash when I tried gaming. Oddly enough, that issue has gone away. 

[Dafriz]

btw, umm... not sure how but they are working now

 

and yea i swapped them out and tested the new card beforehand

(still waiting patiently for my x399 board to come back from RMA...)