best for gaming is high end latest i7.
best for video editing is threadripper.
better mix of the two with moderate gaming and video editing would be R7 2700/2700x.
If he can afford the extreme edition 9th gen CPU's then those would offer best gaming and video editing mix (still not better than threadripper for editing alone) being better than the R7, but in my opinion not worth the extreme cost.
If he is an avid gamer but needs CPU power for video editing at the same time then my recommendation would be to go with R7 2700 or 2700x
only difference that matters being higher base clock on the X version, but when overclocking they are the same. The X does come with a couple extra little technical things internally, but it's more like extra PCIe lane support or slightly higher L2/L3 cache, etc. but not enough to make a huge difference. So it's up to him whether or not he wants to spend the extra $50 for the X varient.
Be noted though, should only use B450 or X470 chipset motherboard.
anything lower end shouldn't be considered, especially for some overclocking.
I personally feel a B450 motherboard is more than enough for some overclocking past 4Ghz (assuming he uses a decent cooler) and will of course have all the standard features you need for other hardware in the system.
Here's the parts he's gonna need.
He can of course not purchase any RAM if he already has a system that uses DDR4 memory. But if he's still on DDR3 then he needs to get the RAM.
In this list below I have provided the recommended CPU and Motherboard.
In regards to the RAM, I put in both 16GB kit and 32GB kit for him to choose from.
If doing video editing of 4K projects, I would advise having 32GB of RAM. Although 16GB is enough, it's not ideal.
Also provided a cooler recommendation if he feels he want's to try overclocking the CPU past 4GHz since anything past that will be too much for the stock cooler it comes with.
PCPartPicker part list /
Price breakdown by merchant
CPU: AMD - Ryzen 7 2700 3.2GHz 8-Core Processor ($264.90 @ OutletPC)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler ($94.99 @ Amazon)
Motherboard: ASRock - Fatal1ty B450 GAMING K4 ATX AM4 Motherboard ($93.99 @ Amazon)
Memory: G.Skill - Trident Z 16GB (2 x 8GB) DDR4-3200 Memory ($124.99 @ Newegg Business)
Memory: G.Skill - Trident Z RGB 32GB (2 x 16GB) DDR4-3200 Memory ($249.99 @ Newegg Business)
Total: $828.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-05 16:37 EST-0500