MojoKid writes: To look at the Dell Precision 15 5510, you wouldn't know that it sits in the middle of Dell's workstation lineup. The laptop is thinner and sleeker than you might expect a workstation-class laptop to be and the premium carbon fiber palm rest gives the system a decidedly high-end vibe. Not to mention, like the XPS 15, Dell equipped this machine with its 4K IGZO Infinity Edge display that has almost no bezel on three of its sides. However, the Precision 15 5510 is actually Dell's mid-range mobile workstation that also supports Intel Xeon E3 processors and NVIDIA's Quadro M1000 series GPUs. It's essentially a mobile workstation version of Dell's XPS 15 line but along with an NVMe PCIe Solid State Drive, delivers professional grade performance and the pro app certifications that go with it. Compared to Lenovo's ThinkPad W550 line, the Precision 15 is a more sleek, stylish machine and in testing it packs more punch as well. Lenovo may already have their Skylake Xeon refresh in the works for the ThinkPad W series, however.