Benchmarks for Nvidia's new 4000-series GPUs

[Dr.Elemental]

Considering the hardware upgrade over the 3000-series, would anyone please consider estimating what kind of performance we could expect to see with new 4000-series GPUs?

Also, are there any known bottlenecks in software or the supporting hardware (bus speed, Memory, CPU etc.) one would need to consider?

Any help would be appreciated.


Thank you!