The PA-9E brick

Hey guys, I'm sorry for starting so many threads today on subjects that may have already been discussed but I just wanted info in one place to make things easier as well as for helping other people.

So as the title states, the M17x 240w power brick. I'm getting a 6970m and I have a 920XM and I'm afraid the PSU may buckle under the heavy overclocked pressure. Plus the 150w I have is mighty hot. Will getting on of these be harmful to the laptop? I know that the bios warning has to be disabled. I know that the 150w adapter can push more than that but I'm concerned about the heat problem. I'd rather have headroom over pushing the limits.

 

I have the M17x-R3/Precision M6500 Workstation 240W PSU. Different P/N, but only 240W PSU available from Dell that I could find. Works fine with the M15x. No apparent direct performance benefit, but runs much cooler under stress than the 150W brick. DELL 240-Watt 3-Prong Additional AC Adapter with 6 ft Power Cord for Dell Precision M6500 Moblie Workstation / Alienware M17x / Alienware M17xR3 Laptops : Laptop Accessories | Dell

Edit: The PSU itself says PA-9E family, but has a Delta label.

 

same as the rev. no help in performance but psu temps were great. i could prolly fry an egg on the 150watt psu when benching.

 

Same deal for me too, it just runs cooler.