dungdungnickphu :
anyone can suggest a 850$ computer for me. i use autocad, solidworks, catia.
i want to ensure that in the next three year, that computer is not out of date
Have a look at this build.
PCPartPicker part list /
Price breakdown by merchant
CPU: AMD - Ryzen 7 1700 3 GHz 8-Core Processor ($179.89 @ OutletPC)
Motherboard: ASRock - B450M PRO4 Micro ATX AM4 Motherboard ($54.99 @ Newegg)
Memory: Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3200 Memory ($129.99 @ Amazon)
Storage: Inland - 240 GB 2.5" Solid State Drive ($32.99 @ Amazon)
Storage: Seagate - Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive ($54.99 @ Amazon)
Video Card: PNY - Quadro P1000 4 GB Video Card ($314.99 @ SuperBiiz)
Case: Fractal Design - Core 1100 MicroATX Mini Tower Case ($53.98 @ Newegg)
Power Supply: Corsair - CXM (2015) 450 W 80+ Bronze Certified Semi-Modular ATX Power Supply ($24.99 @ Newegg)
Case Fan: be quiet! - Pure Wings 2 140 61.2 CFM 140mm Fan ($11.49 @ SuperBiiz)
Case Fan: be quiet! - Pure Wings 2 140 61.2 CFM 140mm Fan ($11.49 @ SuperBiiz)
Total: $869.79
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-13 04:20 EST-0500
So I went with the most affordable Ryzen 7 CPU so that you can have lots of cores and threads so all your applications and software can run very smoothly and you can keep those rendering times to a minimum.
Coupled this with 16Gb (2x8Gb) of 3200Mhz RAM so that the CPU runs efficiently and you won't need to worry about keep too many things open. Motherboard I chose has 4 RAM slots so you can always buy another 16Gb the day you decide that you want to run a dual or triple monitor and have lots of things open simultaneously.
Managed to squeeze in a 240Gb SSD so that Windows boots faster and it's sufficient that have all of your software installed in there so run smoothly as well. I added a 2TB to save all your work files, which I know can get quite large (specially when working with 3D).
I took a compact-sized case to match the micro-ATX boart form factor and added a couple of BeQuiet fans so that your rig won't only be cool but also won't be too loud.
The most expensive piece here is the Graphics card. I went with Quadro as these GPUs include a precision technology that's not available on GTX or Radeon cards, which in my experience is very beneficial since you'll often be zooming extensively and you don't want inaccurate and blurry lines when working with precision (specially when working with 3D). You can also run several monitors on 4K with this video card.
Let me know what you think.