Mohammed Kayed,
My preference would be to have a basis as a workstation. I suggest using a Xeon proccessor and a Quadro graphics card. For Autodesk software a Quadro is best.
Here is a system that also has the benefit of being a proprietary brand- Lenovo. I think this is better than a system that is made from parts. All 6 systems will be identical and have a good warranty. It will be quieter and more reliable.
P300 Tower Intel Xeon Processor E3-1246 v3 | 30AH0025AX + K620 > 4450 AED ($1213 US)
This store is
dtcae in Dubai:
http://uae.dtcae.com/product/p300-tower-intel-xeon-processor-e3-1246-v3---30ah0025ax---k620
Inte Xeon Processor E3-1246 v3 (4-core at 3.5 /3.9GHz)
http://ark.intel.com/products/80916/Intel-Xeon-Processor-E3-1246-v3-8M-Cache-3_50-GHz
8GB (2 x 4GB) Non-ECC UDIMM
1TB 7200 RPM
DVD Recordable
SD Card Reader
Win 7 Pro 64 preload with Win 8.1 Pro 64 R-DVD & License
Nvidia Quadro K620 Graphics Card 2GB
3 Year On-site
E3-1246-v3 is very good with a speed up to 3.9GHz with a Passmark score of 9865. The Quadro K620 (2GB) is a very good card for the cost. The Firepro W4100 average Passmark score is 1581. The Quadro K620 score is 2264. Itf there is a choice between Windows 7 ,Windows 8.1, or Windows 10, please consider using only Windows 7.
When you have the opportunity, the system would be improved by adding another 8GB of RAM. A total of 16GB of RAM is important for computational work and also to run several programmes at the same time.
Cheers
BambiBoom