my 2 gb 380 nitro is still mining eth in a win7 rig. it only will mine in a 3 or more card rig though.
may depend on card position, manufacturer and/or driver version.
Weird.
All my rigs with 2gb cards cant create DAG.. no matter what miner i use.
They do mine EXP fine tho... but not ETH/ETC
Card position shouldnt affect dag size
i wouldnt think so either.
it wont create dag when its 2nd gpu in 2 gpu system. but it will as 3rd/4th in 3/4 cards system. at least under win7.
only thing i can think of is win7 reserves some part of a 2nd cards memory even if not being used for display. but will ignore any cards after that.
doesnt make much sense to me either but as long as it mines im cool with it.