Think cheaper putting together a system from OCuk components site, and letting them build it. Think the cadmium is overpriced, and for gaming DDR5 makes no sense as you can buy 32GB Vengeance RGB RT 3600C18 white ram for £150, whereas your paying £330 for the stuff in the cadmium.
Couple questions,
1) Obv you want a white build, but do you want lots of rgb etc. As you stream, will you be doing it with you and pc on display..ie, is it a showpiece as well?
2) As above, I'd change out the storage completely, it's sub par for that price point
3) 3080 is more than enough for 1440p gaming but at the mo if you want a white card, the 3080ti gigabyte is only one available but you'll be paying £350 more for the privilege
4) If you go for a 3080ti, I'd be tempted to get something like the RM1000X psu, and either buy white cables to go with it or buy the strimmer plus cables for the mobo and gpu(hence why asked if a showpiece). Those 2 cables are the main on view, others barely see so not a problem is they black
For example build below is complete overkill.... is missing the ram(ocuk don't sell the new corsair ram for some reason, but it's £150 for stuff below
or you can get 32gb (2x16gb) 3200C16 pro vengeance rgb white for £140 and 2 sticks of the white pro vengeance rgb light enhancement kit for £30 if you want all 4 ram slots occupied)
Also has gen4 nvme, both firecuda 520's, 1tb for OS etc, 2tb drive for your games..whatever you do , you need a pcie gen3 nvme or higher for directstorage to work when it gets implemented in games, so don't go with a sata drive for your games etc, as it wont work
Build has a 1000W gold rated psu with 10yrs warranty, added both strimmer plus kits(check with OCuk the gpu is a 3 x 8 pin card,otherwise need to change to a 2 x 8.
Also added 2 sets of QL120 fans, so you can change front if you want and put another 3 on the side as intake, then 6 intake with the aio exhausting out the top
You could have course just buy the white cable bundle for £40 and save on the strimmers and use the 3 fans that come with the case, so saving £265, and also drop to the 2018-2021 white RM850X psu, as OCuk selling that on offer at £99.95, saving another £55 for psu and dropping the white cable bundle so £40 there...so doing that price drops to £2743(plus £1509 for Ram)
Think Ocuk charge £200 to £250 for building, but you do get a 3yrs free return and fix warranty with it for peace of mind if you don't want to build yourself, but below with all flasking lights etc will be same price as cadmium with better storage/psu for pretty much same performance, and below without strimmers etc still has a better psu, the storage and will be cheaper than the cadmium
Think DDR5 gives a 3 to 7% gain overall, but not worth over 100% price increase compared to DDR4 and the 3080ti GPU more than compensates and is still way more than you need to 1440p gaming
My basket at OcUK:
Total: £3,063.54 (includes delivery: £14.70)