I have had this as well. Memory management, Page file crashes
The 5500 is a cut-down 5600.
-half the L3 cache
-only PCI-e 3.0
At this point, I'm surprised the chip was even released. Mine has had one core outright fail recently, and it turns out the seller I got it from isn't on the partnership list, so I have no warranty.
I'm not sure if these 5500 chips were tested as thoroughly as they should have been before release certification. The quality control on them seems rather crap.