i think it was videocardz that leaked rtx 2080 timespy extreme tests, granted the test pc had a 7900x cpu and unspecified ram speed but was using a 16gb kit, with nvidia 411.35 drivers (i think), the machine posted a aleged score of 4980 total, granted the cpu proberly helped out a load with that result.
it just so happens that i have a 7900x and a quad channel 16gb kit of 3600mhz ram, i'm also running a ftw3 evga gtx 1080 ti with stock gpu clock of 1949mhz, my ram is at 12.2gb's per second (6100mhz) driver vesrion 399.07, i started up 3d mark and ran timespy extreme and afterwrds my end result was just over 5100 points total.
now the alleged 2080 result was on a stock clocked card but if that thing was able to hit nearly 5000 stock, it could be worth it in my opinion purly down to power draw my overclocked 1080ti pulls over 300watts peak load and the 2080's should come in around 215-225w which is a massive saving for what looks like better overall performance, dont forget slap waterblocks on them and they will be more efficient and run faster due to lowerr temps, thus improving scores across the board.
could be very intesting times ahead, for those of you who would like proof here is the link to my result
https://www.3dmark.com/spy/4408872