Depends on a lot of different factors. IMO, how volumized your muscles are is probably the biggest one. If you are already volumized then you probably won't notice much of a strength gain. If you are pretty flat and start using either CEE or AEE you will notice a jump in strength right away. From y experience, this jump in strength usually levels out after several workouts..but I still appreciate it.
CEE and creatine in general is geared more towards strength gains not so much because of the volumizing effects but because of the increase in ATP within the muscle cells..equates to a higher working capacity.