For video editing (and rendering final product, especially in Premiere Pro) the CPU and RAM are important.
For Blender and other real time 3D rendering/modeling applications the GPU, RAM, and VRAM are important.
For gaming the kinds of simple old games you plan on playing you are more than overpowered so no worries there.
All in all, you have a good system put together.
The CPU is high core/thread count and plenty of power for video editing/rendering with GPU assistance from a 3070 it'll be fantastic.
Even with a lesser card like a 10 series (1070 or something used) you'll have good GPU assistance for this.
For Blender and other 3D modeling/rendering applications, GPU horsepower is king, and depending on what card you decide to use as a temporary card, your mileage will vary.
32GB is recommended.
16GB is just a little too small for the bigger things you plan on doing with the system.
While 16GB is still perfectly fine for the average user and gamer, it's not going to be the best option for video editing and 3D modeling.
64GB would be best, but 32GB is fine.
Don't do 16GB.
Make sure it's 3200MHz.
While you can go for higher speeds, you will get diminishing returns and overall for stability and compatibility it's best to go with 3200MHz.
Dual Channel of course (2x16GB or 4x8GB, whichever you can get at a better price)
I would personally recommend to stick with Corsair Vengeance RAM 3200MHz CL16 if you can get that in your budget.
In regards to the GPU, it would be better to get a card that has higher amounts of VRAM.
The 3070 only comes with 8GB which isn't a lot in regards to Blender and such.
Since you will be waiting to get said card anyways, I would recommend waiting until the 30 series balances out in the market, and you can snag a used 2080 Ti for a good price so you can get the extra VRAM.
And lastly, I agree with what others said, an NVME would cost basically the same, but be a better choice.
Be careful which one you buy though, not all NVME are the same. some of the more budget offerings use TLC NAND instead of QLC NAND and cheaper controllers and whatnot as well as not having a cache.
I personally have the ADATA XPG SX8200 Pro 1TB.
It has good performance, good build quality, good components, and uses QLC NAND and has a DRAM cache.
Here is an SSD tier list to help guide you if interested
Welcome to the SSD tier list. SSD or Solid State Drive is a storage device containing non-volatile flash memory, used in place of hard drive because of its much greater speed. Unlike a hard drive, a solid state drive doesnt have any moving parts. It has two main components - A flash controller an...
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