Originally Posted by
Gaucho100K
Im getting ready to retire my ageing Lenovo ThinkPad W520.
Which processor in the W520?
The Surface Book models are going to have somewhat similar performance to the dual core W520, but if you have the quad core W520, any of the ultrabook CPUs in the Surface book will be a disappointing step down.
If you want to stick with a quad core, have a look at the Dell XPS 15 9560 (or last-gen 9550, or the Precision M5520/M5510 which are the "business" versions of the same machine) or the HP Zbook Studio.
The Dell E5480 (and E5470) do also have quad core options available, but both are not much lighter/smaller or as-equipped with the higher end process, much cheaper than the XPS/Zbook (when new; as refurbs, they're hugely cheaper) and they are much less well-built.
The Dells, in particular, stuff a full 15" screen into an amazingly compact package.