Help us out a little more and we can help you.

What is your currency?
What do you plan on editing with? (premier, SV, etc)
Aesthetics? (case color/ color schemes, LEDs, ETC)
Do you plan on overclocking?
What monitor do you have?

Currency- Pounds
Premier and Sony, plus stream with obs
Black and red or white baby blue
Yes overclocking
Monitor- benq will take suggestions

Thank you

ashley2k10 wrote I'm looking to build my own gaming pc that will run most games in good quality, games such has rust, ark, Pubg and a bit of e I'm starting my own YouTube.

I've dont need anything such as monitors and mouses, keyboards I've got all that,

I've got £1000 to spend and looking for about 16gb ram, thank you. Will also rep for the best customisation

I think he requires the model name of your monitor, BenQ have a wide range.
To run PUBG while streaming you're going to need a powerful processor and graphics card, most likely not within your budget as PUBG is both very CPU and GPU intensive;
I play PUBG with a 1070 8gb DDR5 + 16gb DDR3 + i5 650 and I can assure you I would not be able to stream with this setup, I run in medium settings with 50fps.

What I would expect to be able to run PUBG steady for streaming would be a 1080 along with an i7 7700k, which those two items together cost £650-£700. That leaves you with £300 for a motherboard, PSU, Ram, fans and a case...

If you weren't streaming I'd suggest a 1070, i7 7700k, 750w PSU, 16gb/32gb ram and you'd be fine, with all that fitting under your budget, but the streaming aspect does hinder your budget.

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CPU: [ Register or Signin to view external links. ] (£225.00 @ Aria PC)
CPU Cooler: [ Register or Signin to view external links. ] (£42.95 @ Amazon UK)
Motherboard: [ Register or Signin to view external links. ] (£96.77 @ More Computers)
Memory: [ Register or Signin to view external links. ] (£159.99 @ Box Limited)
Storage: [ Register or Signin to view external links. ] (£125.94 @ Aria PC)
Video Card: [ Register or Signin to view external links. ] (£232.50 @ Amazon UK)
Case: [ Register or Signin to view external links. ] (£79.98 @ Amazon UK)
Power Supply: [ Register or Signin to view external links. ] (£69.98 @ Novatech)
Total: £1033.11

You can get a Phanteks Eclipse P300 for about £30 less than the Meshify C if you really need to get as close to £1k as possible. Add an LED strip and some nice cable extensions when you have some spare money, if you want. XFire support so you can add a 2nd RX 580 at any point if you want. You can get an 8GB RX 580 for about £30-40 more than the 4GB variant.