What will happy if the nonsuitable RAM was put into iMac?

[k8xy4]

Will the iMac be harmful due to the nonsuitable RAM?

 

[atl27426]

Will the iMac be harmful due to the nonsuitable RAM?

In most cases your system will not boot up. You will get a beeping sound when you try to restart.

Ram needs to be an so-dimm so its the right size to fit in the slot. Needs to be 667mhz, CL5 rated.

 

[yojitani]

... might want to consider proofreading your subject line....