These guys are great!!! I had just had a really bad experience with a larger, more well known, supplier who was unable to supply a RAM upgrade kit for my Mac after 3 weeks of waiting. Canada Ram had the RAM in 3 days! And the salesman dropped it off at my door!!!. I guess not everybody will get the door to door. . .but that was truly impressive service. And, oh yeah, the RAM kit of 4 8GB chips works perfectly!! Best service I've seen from an on-line supplier in years!