Precision 7670

The 7670 works pretty well, that is what I use. I have it upgraded to 128GB CAMM RAM memory module and a second 4TB m.2 SSD. I also have a Ilano V13 laptop cooler that really helps out. The new Dell Pro Max 16 Plus should be an upgrade, but it will cost more. It can get to 256GB of RAM though. In ge

Dell precision 7670, 7680, etc. Because what you're describing is called a "workstation" and Dell makes high end workstations. I usually buy them refurbished because their new cost is crazy high

You won't find anything within your budget range brand new for the work you do. You need that massive amount of ram to handle the tasks you do. For a GPU stand point find a laptop that has a 5070ti. For slimmer models Lenovo Legion's are good for this and might be able to find one within your price

for a new purchase i would recommend the Dell Precision 7670/7680 if your budget doesn't allow for new then i would suggest a used or refurbished Dell Precision 7540/7550