Upgrade advise please, will upgrading GPU be enough?

[VelocityNine]

Im new to upgrading and the game im wanting more fps out of is Bannerlords, i understand its still in EA and that may hinder performance but im hoping for just a little more for the big siege's.

Here is my current setup:

CPU- Intel Core i5-6600k
GPU- Nvidia GTX 1070
SSD- Samsung 850 Evo 250GB
RAM- Corsair Vengeance LPX DDR4 3000 C15 2x8GB
MBD- Asus Z170-E

With the GPU i've seen on UserBenchmark that could improve things by 25%:

Nvidia RTX 2070

Would i need to upgrade any other parts for a great increase or is my rig suitable for my current needs?

Any other recommendations or advise would be greatly appreciated.

 

[VelocityNine]

Surely it's not worth changing from a 3000mhz C15 kit to a 3200mhz C16 kit? The tighter timings on the 3000mhz kit should make up for the extra 200mhz.

OP, what res do you game at?

1440p

Thanks

 

[VelocityNine]

Id keep the 1070 and upgrade the rest. What is your psu ?
My basket at Overclockers UK:

• 1 x AMD Ryzen 7 3700X Eight Core 4.4GHz (Socket AM4) Processor - Retail= £299.99
• 1 x Gigabyte X570 GAMING X (AMD AM4) DDR4 X570 Chipset ATX Motherboard= £169.99
• 1 x Team Group Dark T-Force 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Black/Grey (TDGED4= £68.99

Total: £549.47 (includes shipping: £10.50)
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Not sure on the Brand as last one died and i took it to a shop for a new fit and didnt record the name nor can i see due to my case hiding it im certain its 750w 80plus bronze tho.

 

[VelocityNine]

Sorry chaps im confused should i look to upgrade the CPU then or GPU and if i go for either would i need to change any other parts or am i right in assuming it depends on specific compatibility?

Appreciate all the help.