1. Best option is to have 8GB+8GB (from kit).
2. Less desirable - 4GB+4GB+2GB+2GB.
3. Least desirable - any other config.
Options #1,#2 preserve dual channel mode.
With option #2 you get slight loss of performance and may encounter ram compatibility problems.
With option #3 you loose dual channel mode, get slight loss of performance and may get ram compatibility problems.
1. Best option is to have 8GB+8GB (from kit).
2. Less desirable - 4GB+4GB+2GB+2GB.
3. Least desirable - any other config.
Options #1,#2 preserve dual channel mode.
With option #2 you get slight loss of performance and may encounter ram compatibility problems.
With option #3 you loose dual channel mode, get slight loss of performance and may get ram compatibility problems.