Gastarbeiter

I think we've got enough context for this thread to be safe.

Yea. Unless you have a need to go NVIDIA, safe the bit of money and go AMD. They'll be just fine enough.

As said above by @filpo mostly it'll come down if you need CUDA or not. AMD has productivity cores but pretty much the whole industry's forgotten about them. Need productivity? Get NVIDIA. Don't? Safe the cash, get AMD.
 
Only slight factor here is the marginally better performance in Starfield for NVIDIA cards. If you're planning only playing only one playthrough then don't let it be a factor unless you're planning to spend hundreds of hours in Starfield, NVIDIA would be a bigger benefit.

does your productivity work benefit from nvidia? If so then get the 4070 ti. If not then get the 7900 xt
 
An adapter will do

https://uk.pcpartpicker.com/product/4ymmP6/pny-verto-geforce-rtx-4070-ti-12-gb-video-card-vcg4070t12tfxpb1
 
https://uk.pcpartpicker.com/product/VgtLrH/gigabyte-windforce-oc-geforce-rtx-4070-ti-12-gb-video-card-gv-n407twf3oc-12gd 
 
https://uk.pcpartpicker.com/product/wRpzK8/zotac-gaming-trinity-geforce-rtx-4070-ti-12-gb-video-card-zt-d40710d-10p

You can hold off on upgrading your GPU as it should suffice for about 2.5 years. However, if needed, consider the 4070 for ray tracing capabilities(https://www.amazon.co.uk/dp/B0BZDYZ4V5?tag=pcp0f-21&linkCode=ogi&th=1).
 
If you plan to use an AMD GPU, consider the 7800 or 7800XT as good options(https://www.amazon.co.uk/dp/B0CFWM1LNH?tag=pcp0f-21&linkCode=ogi&th=1&psc=1).
 
 
Consider upgrading the CPU to a 5800X3D for your 3rd gen Ryzen 7 setup, though other CPUs are also viable choices.
 
In summary, go for the Ryzen 7 5800X3D, and consider upgrading to a 4070(PSU is enough).

I would go CPU the 3070 is still an ok gpu and it should be fine for the next year or so. I would upgrade the CPU to a ryzen 7 5800x3d.

Another day, another person is introduced to the concept of "new old stock."

Yes the RMx is a Tier A PSU with 10-year warranty, I have owned several Corsair PSU's over the years, including an RMx, all of which have served me well and issue free. I can highly recommend the RMx.
 
It comes in an all white versions with white sleeved cables as well. So while it is a price premium (only £10 right now),  if you wanted to buy sleeved cables anyways it justifies the minor price increase. 
https://uk.pcpartpicker.com/product/dnhKHx/corsair-rmx-2018-850-w-80-gold-certified-fully-modular-atx-power-supply-cp-9020188-na

The RM850X is great PSU. I have a Corsair RM1000i in my personal rig and another Corsair SF600 in the wife's computer, their PSUs, particularly in the price range that you are looking at are great. There is a white version of the RM850X -> https://www.corsair.com/us/en/Categories/Products/Power-Supply-Units/Power-Supply-Units-Advanced/RMx-Series-White/p/CP-9020188-NA
 
Super Flower also have some white PSUs, which are good quality under their Leadex lineup, might be worth looking into. 

the power supply isnt very old and nothing in the system uses 750w so you should be able to use it.

The wattage should be fine for your new build so in that regard it's completely fine. However, if you want something with higher efficiency and better quality, then yes, go ahead and change it. 

While 750W is enough power, the primary concern here is the quality of this unit and how it would hold up with voltage spikes etc. I highly recommend upgrading if you are getting a 3070. Not worth keeping a cheap PSU that could potentially damage your hardware. 
Refer to this list:
For a 3700x / 3070 build I would recommend no less than a Tier A unit, and 750W is more than enough. (Current PSU it Tier C)
 
I can personally recommend either of these:
https://uk.pcpartpicker.com/product/JfBrxr/corsair-txm-gold-750w-80-gold-certified-semi-modular-atx-power-supply-cp-9020131-na
https://uk.pcpartpicker.com/product/6Y66Mp/corsair-rm-2019-750-w-80-gold-certified-fully-modular-atx-power-supply-cp-9020195-na
 
850W:
https://uk.pcpartpicker.com/product/vfBrxr/corsair-txm-gold-850w-80-gold-certified-semi-modular-atx-power-supply-cp-9020130-na
https://uk.pcpartpicker.com/product/jtm323/corsair-rm-2019-850-w-80-gold-certified-fully-modular-atx-power-supply-cp-9020196-na

Went with the corsair after all. 

I agree with ProjectBox, no real difference there.
Either keep your CPU and spend that money on a PSU or go for a 3000 series CPU or wait and gor for a 4000 series when they come out

Just practice for when you get the real deal.

These small keyboards do look cool but I know I would go bonkers without the arrows and 6-key block so I'm resisting buying one.

Deep cool captain white
Rog asus LC white
 
Between the 4 cooler each will have a some pros and cons.

I see news regarding RDNA2:

 
I see news regarding RDNA2 being teased in f0rTn1t3:

If you want one asap then sure.
 
I am after one however I am going to wait for the benchmarks and reviews with real world figures.  It's not like the release ones will be the final cards ever made is it?

Nice 
Glad its all working 

UPDATE:
I ordered a set of white extensions anyway as I wanted the cables to suit the build
 
The motherboard worked fine with only the 8 pin but the CPU would not boost to 4.4GHz. I added the 4pin and everything works fine now. 

So I upgraded my Motherboard, RAM and CPU today. 
I kept the same PSU, drives, case and, for now the same GPU (will upgrade when 30series and RDNA 2 are out).
 
The system is
CPU: Ryzen 7 3700X
Motherboard: MSI X570 Tomahawk
RAM: 16GB Corsair Vengeance 3200 CL16
GPU: AMD Vega 56
PSU: XFX 750Watt semi modular 80+ Bronze
Case : Lian Li Lancool One digital
M.2: AData 250GB nvme
SSD: Crucial 250GB sata3
HDD: WD Green 2TB
Monitor 1 : AOC Agon 32" 1440p 144Hz
Monitor 2 : Acer 27" 1080p 144Hz
 
And it went from this:

 
to this:

FloEFD (CFD)
ANSYS Fluent (CFD)
ANSYS Mechanical (FEA)
Creo Simulate (FEA)
 
I could use all the cores you have! Set up a VM to use one of the XEONs run Fluent on one and FloEFD on the other
 

RGB is the tool of the Devil. Resist his infernal ways and embrace the darkness. 🤪
What were the old specs?