Can anyone answer this? If its 2GB minimum, I will order a new card. Right now when I start mining, it starts and then promptly stops.
All I have right now is an old ATI 5850 1GB, but in market for newer card. Just wanted to get started mining until I got new card. I think I may need a 2GB card. I know ETH needs at least 2GB. Must be same for SIA.
Seems there may be something about the older cards like even the 6870's I have, seems they would not mine. I know the cores changed with the Radeon 7790's on up. So it may be the design of the GPU... Ill keep digging lol
The mining algo doesn't use gpu memory (except for passing parameters to the kernel, of course).
I guess you could do with a 256MB card as well.
I see no reason why the miner wouldn't work on a VLIW card like yours (the final OpenCL code is very simple and compact).