5800x or 5800x3d or 5900x whatever is cheaper
3080 ti or a 3090 ir 3090ti whatever you can get a deal on i've seen 3090tis as low as 899d
32gb of ram 3600mhz
Throw a decent 1000w or more psu for future proof
do whatever else you want for the remainder probly throw in a 280mm rad or 360rad if you have the avaliable funds left.
mobo you will get a lot of different opinions i personally recommend ASUS still or specific MSI boards.
cpu 5800x3d for pure gaming for the cheaper option the other option would be to go 7700x but that means going ddr5 and new chipsets
intel side 13600k
This is basically the best time to upgrade in 3 years. What resolution you want to play at will be a big factor. If you're trying to go with 4k and use ray tracing, the 4080/4090 are your only bets. At 1440p your options expand. Even more so if you don't notice a quality hit when using DLSS or FSR.
As far as sites to use, they're all good except the UserBenchmark comparisons. UserBenchmark unashamedly favors nvidia/Intel. For the rest, look at the power draw compared to price compared to performance. You'll need a 1000W PSU these days.
Also, about the noob questions - I've been thinking about how this forum has slowly lost activity. It's caused by a lack of noobs! Most of us are at a level where we can figure things out on our own and at the same time, no new users have registered here, so there's no one new to help (so thanks for the noob questions).
Intel 13900K/13700K
LGA 1700 AIO. See EK, ASUS or Corsair options
Z790 board. If not overclocking usually a TUF or entry level Strix is enough
RTX 4090/4080
1200-1300 W PSU
32 GB DDR5 6600 RAM
4K 144 Hz or higher monitor or LG C2 42 inch OLED
case of choice as long as it’s not Lian Li 011D variant
should be around 3.5-4K with the monitor.
If you are on a budget like me then:
5800X3D for 329
MSI Tomahawk X570 or latest ASUS X570S TUF or Strix board for about 230
DDR4 3600 C14 for about 220
rest of components can be same as above.
should come to about 2.5K
If you are OK with used then go for a pickup on Hard from people selling their AMD or Intel 12 gen setups. Should be about 500-700 bucks depending on combo (DDR4 vs DDR5) for board processor and ram.