1st Time Building, Components Check Please

[PHNX]

Hi, I bought my first pre-built 10 years ago, and have since transferred the components to a larger case, upgraded the cooling, RAM, GPU, PSU, PCI USB3 ports, and added/swapped various drives including an SSD.

The PC is getting a bit slow these days and so I'm wondering if it's feasible to overhaul it using my existing case, PSU, HDDs, and cooling setup which are:

1. NZXT Phantom 410 Black - Mid Tower Gaming PC Case, Upto ATX CA-PH410-B1
2. Corsair Gaming Series 2013 Edition GS 700W ATX/EPS 80 PLUS Bronze Power Supply Unit
3. Corsair (CW-9060021-WW) Hydro Series H100i GTX 240mm Extreme Performance All-In-One Liquid CPU Cooler
   
4. A combination of 6 x Corsair Air Series SP/AF120&140 fans.
5. 5 x HDDs

but replacing the MoBo, CPU, GPU, RAM, and adding in an M2 SSD with:

1. ASUS ROG STRIX Z490-E GAMING, Intel Z490, S 1200, DDR4, SATA3, Dual M.2, SLi/CrossFire, 2.5GbE/ax Wifi, USB 3.2, ATX
2. Intel Core i7 10700K, S 1200, Comet Lake, 8 Cores, 16 Threads, 3.8GHz, 5.1GHz Turbo, 16MB Cache, 125W, Retail
3. Gigabyte GeForce RTX 2080 SUPER WINDFORCE OC 8GB GDDR6 Ray-Tracing Graphics Card, 3072 Core, 1650MHz GPU, 1830MHz Boost
4. 32GB (2x16GB) Corsair DDR4 Vengeance LPX Black, PC4-28800 (3600), Non-ECC Unbuffered, CAS 18-22-22-42, 1.35V
5. 1TB Samsung 970 EVO Plus, M.2 (2280) PCIe 3.0 (x4), NVMe SSD, MLC V-NAND, 3500MB/s Read, 3300MB/s Write, 600k/550k IOPS

Could someone more learned than me please tell me if this seems like a sound plan, comment on the compatibility of the above components and recommend replacements if better bang for buck is available?

 

[PHNX]

Thanks very much for the advice everyone. Much appreciated.

@Tetras Interesting reading thanks. Think I'll go with the i7 10700 then. Re: the SSD I picked the Samsung as I've found their stuff to be pretty reliable in the past but am definitely open to other recommendations. Resolution-wise think I'm playing at 1680x1050 currently. That might be limited by my 2010 monitor though? I've always stuck with Corsair stuff but thank you for the heads up about that. Who would you recommend for decent RAM at the moment?

@MissChief I'm just having a look at the Sabrent Rocket drive now. Might be one to go for.

@VortexA1 Thanks for the warning. What might be a good PSU to go for, for this setup?