P157SM NP8255-S AC adaptor big enough?

I saw some posts saying the AC adaptor at 180 watts was not big enough, so they got a bigger adaptor and had to rewire the notebook. So what is the story? Is it fine if you don't over clock, or is it so close that too much memory or too many HDDs would overload it. Specifically I am looking at the special edition NP8255-S, which had the 780M and 16 gigs ram, etc.

Thanks

 

No problems stock.

It more overclocking making a 100W perform towards that of a 230W card

 

This review showed it using 202 watts under full load, without over clocking (that I noticed).

Review One K56-3N2 (Clevo P157SM) Notebook - NotebookCheck.net Reviews

" The 18 to 27 Watts that we measured while idle are very decent. They are due to the Optimus graphics switching system, without which we'd expect the 15-inch laptop to need more than 30 Watts. During our 3DMark 06 benchmark, we measured 109 Watts. This is very much, but still feels almost negligible when compared to the 202 Watts it draws under full load. We actually wonder whether the colossal 180 Watt power adapter is sufficiently strong to handle such situations."

 

202 - 15% (Power brick losses are not included in its rating) = 171.7W so even if the brick is a bit more efficient that 85% it would still be in spec under full load (likely a CPU burn in and GPU burn in app causing higher than normal draw).

 

Additional power may be recommended if you overclock and/or overvolt. Otherwise the stock PSU is ample (pun intended).

Rewire what exactly?

 

I believe he is refering as in my guide, opening a higher rated brick and wiring in a capable that will fit the machine

 

Thanks. So 202 watts in and 171 or so watts out. Makes sense.

I was talking about this modification http://forum.notebookreview.com/sager-clevo-reviews-owners-lounges/720279-official-clevo-p157sm-p150sm-sager-np8250-owners-lounge-50.html#post9290345

 

170w+ isnt really comforting, even slight OC would make it cross the 180w mark. I think I will just go with the p177sm, it also might be a few degrees cooler too.

 

Agreed, that is scary. But I don't want a notebook computer that is even bigger than 15 inches. I am hoping this laptop will last me 7-10 years, as I am on an extreme budget. So I didn't plan to initially OC, but might have to down the road.

 

Be aware that this generation the 17 inch has a stronger CPU power delivery system so we don't know how the 15 inch will handle long term higher loads even with a more powerful PSU.