I had a 1620 Pro. My brother has it now and I have a 1640. 1640 is the better drive.
I think ill go for the 1640 pro since itÂ´s cheaper than the 1640 here
There is no 1640 pro, the 1640 is only available as OEM/bulk/retail. The “pro” labeling is caused by lazy, underpaid (or is that over-?) webmasters. Just go with the cheapest option (and/or from a reputable source), you’ll get the same hardware.