Lenovo ThinkPad P50 (ThinkPad P1 Series) certified Refurbished.

Processor Intel Xeon E3-1505M v5 4 x 2.8 - 3.7 GHz, Skylake
Graphics adapterNVIDIA Quadro M2000M - 4 GB VRAM, Core: 1137 MHz, Memory: 1252 MHz, GDDR5, ForceWare 354.88, Optimus
Memory32 GB
, ECC-DDR4-2133, Single-Channel, 1/4 Slots occupied, up to 64 GB
Display15.60 inch 16:9, 3840 x 2160 pixel 282 PPI, LQ156D1JW05, IPS, glossy: no
MainboardIntel CM236 (Skylake PCH-H)
StorageSamsung SM951 MZVPV256HDGL m.2 PCI-e, 512 GB
Weight2.59 kg ( = 91.36 oz / 5.71 pounds), Power Supply: 670 g ( = 23.63 oz / 1.48 pounds)