Hello 
My aging setup might be due for an upgrade. Built summer 2016. Only internal upgrade since is OS SSD and the addition of an M2 for storage. I am wondering if I should upgrade my current setup, or go for a new one?
OS: Windows 10 Pro 64bit
Monitor: AOC 27" something 1080p 144Hz
Motherboard: ASUS MAXIMUS VIII RANGER
CPU: Intel Core i5-6600K Skylake
GPU: Palit GeForce GTX 1070 Super JetStream - 8GB GDDR5
RAM: Corsair Vengeance LPX DDR4-3000 DC 16GB
Storage: Samsung 870 EVO 500GB SSD (OS)
Storage 2: Kingston NV2 M.2 NVMe SSD, 2TB (Storage)
Power supply: Cooler Master V 750W
I see that the best CPU I can put in this configuration is an I7 7700K, but that does not seem like a huge difference performance-wise. I also read that an RTX 3070 could be installed with little degradation of performance with the MB I have, but I have no clue regarding other potential bottlenecks. If I understand correctly the PSU should be able to deliver enough power, but I am not sure if there might be other things to take into account. I am currently running 1080p. Might upgrade to 1440p. The PC is mainly used as a workstation but I like the possibility to do some gaming now and then. What would be the best solution here? Just get a new GPU? Get a new MB to upgrade both GPU and CPU? Just build a new one?
All inputs are appreciated
Cheers!

My aging setup might be due for an upgrade. Built summer 2016. Only internal upgrade since is OS SSD and the addition of an M2 for storage. I am wondering if I should upgrade my current setup, or go for a new one?
OS: Windows 10 Pro 64bit
Monitor: AOC 27" something 1080p 144Hz
Motherboard: ASUS MAXIMUS VIII RANGER
CPU: Intel Core i5-6600K Skylake
GPU: Palit GeForce GTX 1070 Super JetStream - 8GB GDDR5
RAM: Corsair Vengeance LPX DDR4-3000 DC 16GB
Storage: Samsung 870 EVO 500GB SSD (OS)
Storage 2: Kingston NV2 M.2 NVMe SSD, 2TB (Storage)
Power supply: Cooler Master V 750W
I see that the best CPU I can put in this configuration is an I7 7700K, but that does not seem like a huge difference performance-wise. I also read that an RTX 3070 could be installed with little degradation of performance with the MB I have, but I have no clue regarding other potential bottlenecks. If I understand correctly the PSU should be able to deliver enough power, but I am not sure if there might be other things to take into account. I am currently running 1080p. Might upgrade to 1440p. The PC is mainly used as a workstation but I like the possibility to do some gaming now and then. What would be the best solution here? Just get a new GPU? Get a new MB to upgrade both GPU and CPU? Just build a new one?
All inputs are appreciated

Cheers!