Not true. My sites have an A+ on SSL Labs with a 2048-bit RSA cert. Edit: you may be thinking of one of the numeric scores, which probably requires 4096-bit R

Not true. My sites have an A+ on SSL Labs with a 2048-bit RSA cert. Edit: you may be thinking of one of the numeric scores, which probably requires 4096-bit RSA to max out. But you'd be best served ignoring the numeric scores and just focusing on the letter grade. You really do not need a 4096-bit end-entity RSA key to have "A+"-level security.