Re: What's an "OEM version" in this picture?
You're right - you'd have to be extremely handy with a soldering iron to make use of one of these on its own.
I read elsewhere that the actual difference between the 5Y10 and 5Y10a is that one can be configured for an even lower TDP if required.
If configured for the same TDP they'll perform identically.
Biting the hand that feeds IT
