Well, I can't say personally how well either overclock, however they probably provide virtually identical options as far as overclocking goes. It's not very important, no. You may or may not notice a performance increase with a larger buffer. Likely only if you perform very repetitive tasks. What you should keep an eye on, is the actual media transfer rates of the drive which you can view on the manufacturers website. This thread might be useful to you: https://www.techspot.com/vb/topic102623.html.