Oil pressure raises after oil change?

[goldNSX]

Nothing that I'm worried about but after my oil change yesterday my oil pressure gauge is reading higher values when the engine is warmed up. Before I used the Honda/Motorex synthetic stuff 0W/40 that was mixed by our local oil producer and is sold by Honda dealers. Now I'm using Mobil 1 0W/40 fully synthetic.
The gauge was 1 bar at idle before and now is at 2 bar, at about 4k rpm it's 6.75 instead of 6 bar. I've replaced the oil filter with the OEM one and nothing else changed except for the valve adjustment.
Higher pressure means normally thicker oil, no?

 

[Tomrev]

"Higher oil pre = thicker oil" I'd agree, my experience there is not with the NSX, but noticing the difference while warming up the VW engined Supervee. With cold engine and Mobil-1 0-40 wt. it will show around 80 psi. at 1500 RPM. With 20-50 Kendal, start-up is instant, scary 115 psi. at same revs, when warm 60 psi above 5K.