yes the backplate on the back side. on the coolermaster 212 evo it will fit using the lga standoffs without the backplate. just remove the little metal peg where the heatsink meets the front plate.
was just wondering if it could cause warpage or damage
What causes high error rates? 30-40% on minepeon
I've never seen one with 40% error rates. Can you try on a computer using cgminer? It sounds like I might have to finally pull my Pi out of the antistatic wrap to test with.
Also, can you post a picture of your Hyper 212 setup? I'd like to see that.