I just received two 500GB Blue drives from Amazon. But by looking at it and holding them it’s obvious they are different. One is lighter and they look completely different.
From the web apparently one drive has two 320GB platters and the other drive has one 500GB platter.
So now they have two different characteristics. The one platter drive has faster read rates, but slower random access. I’d rather have faster random access and slightly lower transfer rates. Now I need to order a third drive and hopefully I don’t get one with two 250GB platters. I need them to be the same so both identical PCs have identical performance, otherwise if one is faster I will never hear the end of it.