I have a new computer (Dell precision tower 3620, Intel Core i7-6700k CPU @ 4.00GHz 4.00Ghz 32GB RAM 64 bits).
When I run my model (using Xpress 8.0) the computational time is 1200s.
However, if I run the same model in my old pc (Asus Intel Core i5-3450 CPU @ 3.10Ghz 3.10Ghz 6GB RAM 64 bits) the result is 560s (with the same version xpress 8.0).
How is it possible? Do I have to configure something in xpress, or on the PC?