PC development

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Joined
22 Sep 2018
Posts
62
Hello!

Since my new monitor became an LG OLED C2 42" TV, I was forced to buy a new video card.

My current config:

Processor: Intel Core i7-10700K
Motherboard: MSI MAG Z490 TOMAHAWK (MS-7C80)
Memory: 16 GB DDR4
Video card: I am replacing an RTX2080 with this: ASUS TUF Gaming Radeon™ RX 7900 XTX OC Edition 24GB
Power supply: Seasonic Prime Ultra 650 W

Question: What I have managed to find out so far is that the power supply will be small. How can I calculate the size of the power supply unit I will need?
Question: What is better to do? Replace the processor, memory, motherboard as well or just buy + 16 GB of memory?
How much can a new generation processor throw on average in a 4K game at ULTRA settings?

Thanks!
 
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