I’m on a T580, great machine, basically a P52. Dual batteries. No TN screens (I think, make sure). I put the discrete graphics card cooler in my (integrated graphics) coz I live in a hot place and some TPN7950 on the CPU, and it never cracks 70C and usually stays silent. Upgraded the SSD to a 2TB nvme, and it’s basically been flawless for 2+ yrs, touch wood.