Is P570WM the only Clevo that support dual PSU?

Like the topic says, is it the only Clevo laptop that supports dual PSU?

I wonder if the P375S does it too.

 

It's not a support it's a need.

 

A P375S with 4940XM/880M SLi on heavy OC also need dual PSU but does it support it?

 

As far as i know this machine uses the same PSU as the P570WM and you can just buy 2 of them and the power converter box.
but i don't think it's needed.
found this discussion for you: http://forum.notebookreview.com/sager-clevo/727740-p375sm-upgradability.html

 

It's not required unless you intend to get I to some serious ocing.

 

yeah, so the mother board will support the additional current from a dual PSU setup?

 

It's a parallel current.
the voltage stays the same.
it won't damage anything.

 

Problem is that I dont really want a Hex CPU for the laptop, I wanna game and most of the games dont even support Quad CPU but high clocks and 3,79GHz is not that high. The P375S here in Norway only comes with the crappy 4700M CPU do I need to buy the 4940XM CPU seperate but with the 4940XM and twin 880M setup, I dont wanna run into power limitation problem.

 

well, the new Alienware 18 dont support dual PSU like the R1/R2 did so that makes me question the P375S

 

I can't see the problem. The single one it's comes with should be enough. If you want more, it's not a matter of support, you can have a hundred in parallel if you really want. PSUs are constant voltage, the current depends on the demand. That's pretty basic electronics.

 

A 4700M, which can have an extra 200mhz placed on it, so 3.4ghz on all 4 cores should not hold your games back. You could go for the 4800 or 4810 if you fancy a little more tweaking room.

 

You can get Prema's modded BIOS and turn off cores to increase your overclock. I got my 4940MX to 4.5GHz by setting it to 1 core in the BIOS and turning off HT. My desktop 4770k won't even do 4.2GHz so maybe you might want to look into the modded BIOS if you need the overclock.

I forget what I had the core voltage at but it wasn't terribly high.

My 4940MX will run 3.89-3.99GHz on all four cores with a 110mV undervolt but that isn't totally stable so I keep it at -50mV for every day usage which runs it at 3.79GHz.

Honestly, if I had gotten the 4810MQ, I probably would have been just as happy, since even with the unlocked BIOS, you can't adjust the base multiplier, only the turbo which you can do in Windows with XTU anyway.

The power supply has plenty of juice for a 4940MX and two 880Ms, I have no issues with it.

http://www.3dmark.com/fs/2251329
http://www.3dmark.com/3dm11/8409193

For comparison, my 4770k/780 Ti desktop:

http://www.3dmark.com/fs/2237636
http://www.3dmark.com/3dm11/8398465

 

The single PSU is fine unless you volt mod the 880Ms at all.

 

330W PSU means the output is 330W correct? So if going by 80% efficiency, I probably don't need to be concerned until I see the PSU consistently pulling 400+W from the wall?

 

Typically notebook supplies are 80-90% efficient. You have to add some range into your calculations and then maybe factor that running a PSU at 100% should be avoided if possible.

 

Right, so if I'm pulling on average 280W from the wall when gaming, the PSU is really only outputting anywhere from 220-250W ie 75% of capacity then.

 

At that level I would assume closer to 90% efficiency but yes.