Help me decide. 3080 or 4070?
I'm currently in the process of building my first ever gaming pc, I have everything except the GPU and PSU and I have a really difficult decision to make, I have a Ryzen 7 5800x with 32gb ddr4 ram and i can't decide if I should buy the 3080 10gb for £300 or wait two weeks and be able to buy a 4070 12gb for £450. I currently have a 1080p 144hz monitor and don't plan to buy a 1440p and if I play on the 4070 I don't think the GPU will be used to its full power because of the monitor so it would be a waste? I plan to play a lot of different AAA games like cyberpunk and a lot more new and old ones.
They're both from eBay so they're used but I talked with both of the sellers and asked for multiple photos and they both seem in excellent condition, the only problem I have is if I wait for the 4070 someone else might buy it, so I either buy the 3080 now or wait and pray no one buys the 4070.
I'd love any kind of help. <3