AMD cards with more than 4 GB RAM will now work without issues until DAG epoch 450 Added new -daglim parameter to allow a few more weeks of work for 4 GB AMD Polaris cards. Use -daglim 1 for automatic operation, or specify a concrete value for the maximum DAG size (example: -daglim 4000 will set max DAG size 4000 MB) Added -rxboost parameter (also accessible via -vmr) to boost the performance of GDDR5 based AMD cards (Polaris or earlier) Added memory straps support for AMD Vega cards. Use the -straps command-line option to activate it (example: -straps 1 will activate the lowest strap level) The Nvidia memory timing (straps) option is improved and now is turned off during DAG generation to avoid any possible instability issues Many other small improvements and fixes 이래 돼 있더라고요 제발 오타가 아니길 빌어야죵.
https://bitcointalk.org/index.php?topic=2647654.msg55544625#msg55544625