so, the real question is, did I do it properly? and how else can I test it?
Looks like a nice OC. I usually use this technique:
Start by increasing solely the core clock in 15Mhz increments whilst testing with a stress test in between each jump. Leave the memory alone to eliminate variables. Once the stress test crashes/artifacts, reduce 10MHz and retest. Repeat until stable then perform the same procedure with the memory.