Bobotie1

The prices are wrong with your build, with pounds you still have 42£ left.
and as Jurrunio said, the PSU isn’t the best and the 212 evo is old.
here’s an “modified” build; (BTW, you could go for a 500Gb M2 if you don’t need that much storage and want faster storage)
 
PCPartPicker Part List
CPU: *AMD Ryzen 5 3600 3.6 GHz 6-Core Processor  (£159.00 @ Amazon UK) 
CPU Cooler: ARCTIC Freezer 34 CPU Cooler  (£23.73 @ Overclockers.co.uk) 
Motherboard: Asus ROG STRIX B450-F GAMING ATX AM4 Motherboard  (£114.98 @ CCL Computers) 
Memory: Corsair Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 CL16 Memory  (£67.39 @ CCL Computers) 
Storage: Crucial BX500 240 GB 2.5" Solid State Drive  (£28.98 @ Amazon UK) 
Storage: Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive  (£33.95 @ Amazon UK) 
Video Card: Gigabyte GeForce GTX 1660 SUPER 6 GB OC Video Card  (£209.99 @ Amazon UK) 
Case: Corsair SPEC-DELTA RGB ATX Mid Tower Case  (£64.95 @ AWD-IT) 
Power Supply: Corsair CXM 550 W 80+ Bronze Certified Semi-modular ATX Power Supply  (£102.62 @ Amazon UK) 
Total: £805.59
Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2020-07-29 20:38 BST+0100

The prices are wrong with your build, with pounds you still have 42£ left.
and as Jurrunio said, the PSU isn’t the best and the 212 evo is old.
here’s an “modified” build; (BTW, you could go for a 500Gb M2 if you don’t need that much storage and want faster storage)
 
PCPartPicker Part List
CPU: *AMD Ryzen 5 3600 3.6 GHz 6-Core Processor  (£159.00 @ Amazon UK) 
CPU Cooler: ARCTIC Freezer 34 CPU Cooler  (£23.73 @ Overclockers.co.uk) 
Motherboard: Asus ROG STRIX B450-F GAMING ATX AM4 Motherboard  (£114.98 @ CCL Computers) 
Memory: Corsair Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 CL16 Memory  (£67.39 @ CCL Computers) 
Storage: Crucial BX500 240 GB 2.5" Solid State Drive  (£28.98 @ Amazon UK) 
Storage: Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive  (£33.95 @ Amazon UK) 
Video Card: Gigabyte GeForce GTX 1660 SUPER 6 GB OC Video Card  (£209.99 @ Amazon UK) 
Case: Corsair SPEC-DELTA RGB ATX Mid Tower Case  (£64.95 @ AWD-IT) 
Power Supply: Corsair CXM 550 W 80+ Bronze Certified Semi-modular ATX Power Supply  (£102.62 @ Amazon UK) 
Total: £805.59
Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2020-07-29 20:38 BST+0100

If listed it for 5 bucks, if it doesn’t sell within a week I’ll throw it away

if you are planning to build, would recommend waiting for nvidia ampere and zen 3.
 
but to give you an opinion, just get the 3700x and OC it, not worth paying the extra

Nope definitely not. The 3100 will be fine with the GTX 1650S

Owh I didn’t know that thanks for telling!

You're basically screwed. Try selling it on reddit might get most of the money back. Ebay is complete shit especially in the middle east and africa. try /rhardwaresales tho.

I ran my 3700x on the same board for a couple weeks and it went fine.
 
 
Edit: one thing to be aware of is that I had some issues with getting higher than 3000Mhz memory to work properly, so keep that in mind

Totally agree on this one;
Your cheap-ass PSU is going to give up on you fast, and if it ain’t the PSU it’s the dirt cheap OEM board in there.
 
£300 can get you quite a good 2hand gaming system with a “gaming” motherboard, trustworthy PSU and upgrade options. But I’m just repeating the other guy.
 
If you do go with just a GPU upgrade; 1030 sucks and has performance worse than a 750 ti. Since you’re buying used, a used 1650 is overpriced atm in my experience, so a 1050 ti low profile is the best you can get, if you want something lower priced look for a 750 ti low profile.

Just dump it. The oven trick is a temporary fix as most cards fail within a couple weeks anyways.

you can gi with 240gig ssd for now to afford the build. that case is decent for the moeny

i'd go with this
PCPartPicker Part List Type Item Price CPU AMD Ryzen 3 3100 3.6 GHz Quad-Core Processor €113.90 @ Azerty Motherboard MSI B450M PRO-VDH MAX Micro ATX AM4 Motherboard €84.95 @ Megekko Memory Corsair Vengeance LPX 8 GB (2 x 4 GB) DDR4-3000 Memory €55.66 @ Azerty Storage Crucial P1 500 GB M.2-2280 NVME Solid State Drive €72.95 @ Megekko Video Card Asus Radeon RX 570 8 GB STRIX GAMING OC Video Card €159.95 @ CD-ROM-LAND Case Fractal Design Core 1000 USB 3.0 MicroATX Mid Tower Case €37.95 @ Paradigit Power Supply be quiet! System Power 9 400 W 80+ Bronze Certified ATX Power Supply €49.45 @ Azerty   Prices include shipping, taxes, rebates, and discounts     Total €574.81   Generated by PCPartPicker 2020-05-22 14:29 CEST+0200    

I mean, you can get equivalent GPU performance and 5 times better CPU performance for your money. Not to mention a MUCH more reliable HDD.
PCPartPicker Part List
CPU: AMD Ryzen 3 3100 3.6 GHz Quad-Core Processor  (€113.90 @ Azerty)
Motherboard: ASRock B450M-HDV Micro ATX AM4 Motherboard  (€67.85 @ Megekko)
Memory: *Corsair Vengeance LPX 8 GB (2 x 4 GB) DDR4-3000 Memory  (€55.66 @ Azerty)
Storage: *PNY CS900 120 GB 2.5" Solid State Drive  (€29.99 @ Paradigit)
Storage: Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive  (€43.94 @ Megekko)
Video Card: Asus Radeon RX 570 8 GB STRIX GAMING OC Video Card  (€159.95 @ CD-ROM-LAND)
Case: *Cooler Master MasterBox E300L MicroATX Mini Tower Case  (€39.99 @ Paradigit)
Power Supply: *SeaSonic S12III 500 W 80+ Bronze Certified ATX Power Supply  (€49.90 @ Azerty)
Total: €561.18
Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2020-05-21 20:20 CEST+0200

1. Is the pcie slot confirmed working?
2 . Is the gpu confirmed working?
3. Is the screen/cable confirmed working?
4. Is your screen on auto detect or HDMI?
5. Do you have the latest BIOS?

I’ve had issues with older monitors and older cards combined with newer drivers and newer OS.
 Things that might or might not matter:
 
the port type on the monitor.  There seems to be serious compatibility stuff with DVI. Hdmi seems reliable regardless but a lot less love is being lavished on dviD.
 
Age of the driver.  I had a monitor literally just turn itself off on loading several times when I upgraded.  The generic video driver no longer considers itself compatible with my monitor for one thing.
 
age of the OS build.  Win10 apparently has several versions and they don’t all work the same.

Anything from an good brand (kingston/Corsair/etc...)
will Vega 8 run RSS tho?

An open case will always generate noise, and thus the reason I’d recommend closing it. Having the case fans is a better idea, since the extra temperature control will allow you to keep it cooler when needed, or, to have them very slow when not needed. This is however my opinion tho.