Here's some numbers I got from my new 2070 Super. Running the newest Ubuntu and one core kept free for the GPU. Times in seconds. The numbers in parentheses are the durations from my regular 2070 (though it is a Founder's Edition, so a tad faster).
AP27: 740 (849)
PPS sieve: 291 (161)* (1 task)
GFN15: 29 (25)**
GFN16: 56 (61)
GFN17Low: 188 (210)
GFN17Mega: 206 (231)
GFN18: 686 (818)
GFN19: 1675 (1917)
GFN20: 6432 (7603)
I also managed close to 700 P/day on manual GFN22 sieving (b13), cf. a bit over 600 for the regular 2070.
The Super is running driver version 435.21, with an i7-3770. The regular 2070 is running driver version 430.50 with an i9-9900k, on Ubuntu 18.04.
*Not sure why the regular version is so much faster here...?
**I'm assuming the numbers here aren't really all that indicative of performance, since GFN15 is very inefficient in GPU usage and maybe stuff like CPU and/or RAM comes into play?
Long live the sievers.