Forum Post: The Pros and Cons of caching

I recently discovered that frame buffers used for an LCD should not be cached (I experienced bad groups of pixels). Since memory in our environment (RZ/A1M without any external RAM) is tight, I may need to use frame buffers in the first 1MB of the on-chip RAM.  Is it "safe" to disable caching for that first MB?  I'm executing out of NOR Flash and caching there is crucial. I realize the answer is "It depends", but I'm hoping to better understand the pros and cons, so any advice/comments are appreciated. Thanks.