[SOLVED] Upgrading my PC and I don't know if the new component is compatible

[Felmorne]

Hello everyone!

First of all this is my current build:
CPU: Intel Core i5-7600K 3.8 GHz Quad-Core
CPU Cooler: Cooler Master Hyper H412R 34.1 CFM
Motherboard: Asus MAXIMUS VIII HERO ATX LGA1151
GPU: NVIDIA GeForce GTX 970 4 GB
PSU: Corsair 760 W 80+ Platinum Certified Fully Modular ATX
Memory: G.Skill Aegis 8 GB (1 x 8 GB) DDR4-2400 + G.Skill Aegis 4 GB (1 x 4 GB) DDR4-2400

I was thinking of buying a MSI Radeon RX 5700 XT Mech 8G OC since my GPU is getting a bit old.
Since the new GPU has PCI Express 4.0 and my current Motherboard only supports PCI Express 3.0 I don't know if it will work or if it does, if the performance will be far inferior.

 

[LordVile]

Hello everyone!

First of all this is my current build:
CPU: Intel Core i5-7600K 3.8 GHz Quad-Core
CPU Cooler: Cooler Master Hyper H412R 34.1 CFM
Motherboard: Asus MAXIMUS VIII HERO ATX LGA1151
GPU: NVIDIA GeForce GTX 970 4 GB
PSU: Corsair 760 W 80+ Platinum Certified Fully Modular ATX
Memory: G.Skill Aegis 8 GB (1 x 8 GB) DDR4-2400 + G.Skill Aegis 4 GB (1 x 4 GB) DDR4-2400

I was thinking of buying a MSI Radeon RX 5700 XT Mech 8G OC since my GPU is getting a bit old.
Since the new GPU has PCI Express 4.0 and my current Motherboard only supports PCI Express 3.0 I don't know if it will work or if it does, if the performance will be far inferior.

Nope the performance will be the same. We haven’t saturated PCIE 3.0x16 yet with the best cards on the market and PCIE is backwards compatible. You could jam it in a PCIE 2.0 slot of you wanted just the CPU wouldn’t be able to keep up the only thing PCIE improves is SSDs where PCIE 4.0 based ssds are faster than the old 3.0 ssds but even then they’re not worth it for 99.9% of people.