If your laptop doesn't need to come with you, I would consider a desktop.
I use CAD, image editing and 3D software. I have a laptop, but if I had to choose, I would pick a desktop over a laptop every time. The main reason for me is that components can be replaced/upgraded without buying an entirely new computer, which is cheaper. Also, I can't possibly imagine having to do design work on a 15" screen! Especially photo editing!
No matter what you buy, these are some of the things you need to consider in a new system, lap top or desktop.
Display (screen and graphics card/graphics processing unit or GPU) and CPU
These are the first things I would consider when addressing your lag time issue. I'm assuming this is primarily a problem with Lightwave, and depending on the complexity of the renderings.
Because photo editing and design software is so memory demanding, definitely get best processor you can afford. Unfortunately, this does mean one of if not the most expensive. However, a top of the line CPU won't necessarily solve the lag time issues. If the lag time is a problem particularly with 3D design work, you're laptop probably doesn't have the graphics card and/or display screen you need that can handle those demands.
Resolution needs to be at least 1920 by 1200.
Response rate at least 6ms, the lower the better
Contrast ratio at least 80,000:1
Compatible with industry color standards
Color gamut, the highest you can get
Custom color adjustment for photo editing
Graphics card/ Graphics Processing Unit (GPU):
This is the biggest thing to consider, after the CPU, if you want to eliminate the lag you refer to
Should have it's own RAM
DO NOT get an integrated one!!!
RAM Bandwidth, the more the better ( The more complicated your 3D renderings are, the more you need) Bandwidth is roughly equated to how fast images can be processed. If you are moving around in 3D space on you computer, this is important!! If it's too low, you have lag time.
There's a lot more to consider in a GPU, but IMO, as a designer, these are the most important and the first things I consider. As for the rest of it, it depends on how much technology you want to take advantage of. Because of gamers, graphics technology is improving faster and faster. I just stumbled on G-sync, some new technology developed by Nvidia. My current GPU isn't up to par. My monitor I'm about to buy will be. If I want to take advantage of this new, better technology, I have to upgrade my GPU. But a new GPU will be far less expensive than buying an entirely new system to stay on top of the latest technology.
The best advice anyone ever gave me about buying a PC for my work is to look at what gamers are using. I've found that it's best to build your own system or start with something you can add on to or upgrade. If you do, start out with the best MOBO, processor and power supply you can get. Everything else is cheaper and easier to upgrade later. If one component needs to be replaced, it's also typically going to cost a lot less than a new system. And get a good monitor.
Edited by Booh-kitty, 04 November 2018 - 04:54 PM.