Running 3d with those cpus will make your Titan Xp looks like gtx 260... but should work for Time Spy Xt... with a decent cpu score around 10912 H2o vs. Ln2`s 3DMark - Time Spy Extreme score: 2400 marks with a Radeon R9 390
Regarding 2d you can not run GPUPI and both Geekbench because Intel Open CL or compatible program issue. As Ln2 not allowed here, that's the best I can offer you from Florida 24/7 0-Celsius, supermico lower temps recommended.