Yes, AMD had bad cpu's but the cores DO NOT AFFECT IN MINECRAFT! Minecraft only uses 1/2 cores and Intel had a very good single core preformance, that's why intel will be better even if the rest of the cpu specs are exactly the same. Also, minecraft is more cpu intense then gpu. When i use mc my cpu load goes from 2-3% to 30%, my gpu goes from 20% to around 40% (no shaders), ofcourse when you use shaders your gpu load is around 90% but thats totally something else!