Need MOAR watts! Alternative charger?

So as much as we all love our Delta bricks for their size and reliability and obviously impeccable build quality I was searching for a more budget option.
I'm reaching the limit of my 330w adapter and with the cost of another adapter plus having to carry the thing around and adapters etc I wondered about alternatives.

While on an unrelated fact finding mission regarding Li-Po batteries I stumbled upon a couple of very interesting power supplies. Namely these, now I'm in the EU but I'll link both 220-240v and 100-120v supplies for those who use the lower voltages.
Now yes, the voltage range means they aren't using switched power designs however the savings in adapter cost would make up for efficiency (probably) and ATX power supplies didn't feature them until 80+ Certification became popularized.

Note these are suggestions, I'm sure similar products could be found. I don't want this to come off as advertising.

The chargers themselves:
HobbyKing 540w Power Supply (13.8v~18v - 30amp) (100v - 120v) (220v - 240v)
Turnigy 1080W Power Supply (13.8V~18V - 60amp) (100v - 120v) (220v - 240v)

Now Turnigy is generally a well respected, or at least well known brand and the total cost of one of the 1080w monsters delivered is ~$160 or ~€140.

So a way to deliver the power to the laptop would be needed.They use a female Kycon connector (aka DIN-Power) and soldering up a cable and connecting to the main cable doesn't seems pretty straightforward.

I've been researching the Kycon 4pin connectors and the datasheet states that they can handle 360w. This raises an eyebrow for me since there are already dual 330w adapters using the single input on the laptop and there's no reason the output from one of these PSU couldn't be spread across a few output if that's where the issue is.

So what are people's thoughts? Provided the output voltage is stable and fairly ripple free (or suppressed with a few cable capacitors) we could have all the power we could ever want.

I'm not saying this is a brilliant idea, maybe it's entirely insane but I'd at least like to know why!
@Stooj you're electrical engineering knowledge would be valued.

 

http://www.adapter.cc/products/HP-Firebird-20V%2d17.5A-350W-Adapter.html

 

You'll need to find something capable of 19-20V output. 18V will probably be too short of the mark. Additionally, you could probably get away with up to 20.5V models as the voltage will probably drop into range when drawing from it. Usually it's safer to go +1V than -1V. Going lower on voltage means drawing more current through some components which may not be able to handle it.

I'm far short of an Electrical Engineer. Appreciate the comparison though

What I can tell you though, is that the P870DM has a seemingly more robust power system which would suggest to me that modifications were made to take the extra current. Makes me wonder, if you throw more than the existing 330W at the P750/P750 whether there's another point of weakness in the power delivery.

 

https://www.techinferno.com/index.p...at-do-you-want/&do=findComment&comment=140905

 

The problem with having more power plugs is the required (and precious) board space it takes up when there is a solution to link them up that does not take a huge amount of space.

 

Wow and what a form factor! If I can find somewhere a little more trust worthy to pick one of those up for a reasonable price I might just have to have a play with one of those. Something you stubled upon or a proud owner?

ou'll need to find something capable of 19-20V output. 18V will probably be too short of the mark. Additionally, you could probably get away with up to 20.5V models as the voltage will probably drop into range when drawing from it. Usually it's safer to go +1V than -1V. Going lower on voltage means drawing more current through some components which may not be able to handle it.

I'm far short of an Electrical Engineer. Appreciate the comparison though [/QUOTE]

Naturally you're right that 18v may well be below the cut-off, particularly if it sags under load; and considering the price of these units it would have to be expected.
I'd be interested in a tear down of one these. Since they're adjustable by design and they would have a more useful range (i.e sellable) between 13.8v (a typical cutoff for a 3s/4s lipo charger) and 18v (possibly another relevant number in the LiPo world) that it, It's possible they're already capable of 19v at the revised wattage yet and would be constrained by a couple of resistors and pot though that may be clutching at straws

Was the P7x DM not intended to take the 2x 330w arragement? That would certainly make sense, I was just always under the impression it was, or at least advertised as being compatible.
It would add little of value to the consumer so I can see why they wouldn't need as powerful a delivery system. It's may well be the same platform and the P7XX could possibly be populated to the same standard though with scattered reports of 980m cards failing in sli it may be that Clevo is using the exact same under-configured platform, or just the
It would certainly be cheaper that designing a whole new one surely when designed originally they would have considered a need for future expansion.
Then again yes. I think the weak point would be found in the P7x rather quickly drawing 1080w without modification.

Voted. Personally I'd be happy with 600w in a nice single unit but then agin I don't have to deal with the demands of SLI.

Sorry I wasn't clearer, I wasn't proposing more plugs on the laptop itself, simply running the output to multiple connecting units, each limited to say 400w and then effectively replicating the current mod for high power delivery, A single one of these adapters along with a single box to boost the voltage, possibly some rudimentary ripple supression. a series of high capacitors could do there!

This was less than an entirely serious question but more a curious discussion. Likewise using a SFX form factor PSU and combining the +12v, +5v and -5v rails before using wiring itself and in line capacitors to bring it towards spec. Enough 24 awg and a hell of a connector block and you're in business![/quote][/QUOTE]

 

There is a current box that allows you to link up to two 330W units together.

 

Not that I know of. The 2x330w using a splitter is simply offering more current to the system. MY worry is that if you allow the system to draw that much more by overclocking you'll soon find where the weak spot is (there always is) in a bad way. ie burning something out. The power delivery is clearly over-engineered to a degree in the P700 but if you were to actually attempt to draw 500W+ into it, I would not be surprised if something burnt out.

What most people forget, is the power systems are designed for stock use cases. Exceeding it is really only done with overclocking which is by all definition out of spec.

Thing is, the power consumption of the 6700K and GM204 chips can approach double when you throw enough power at it. You simply can't design a laptop around that in any reasonable way. Especially for multiple configurations which aren't the super high-end.

 

There is always a balance to be struck with engineering, be it weight, cost, cooling etc.

 

So, maybe let the buyer choose which ports is it absolutely necessary for him?

 

Sadly you end up with the Homer Simpson car if everyone gets to make the model as the cost of producing multiple chassis and motherboards for the same "model" would be huge.

 

Who said that the I/O and PWR ports must be soldered on the motherboard?
It can be placed on exchangeable and configurable extension board. Then you can use one motherboard for many laptop model and one damaged socket does not eliminate the entire motherboard.

 

How big is that board? You still need all the associated power supply circuitry to work with that incoming power and requires a different chassis for the ports.

 

Would be interesting to know why you need more power?

 

Spoiler: The power consumption from a 330w psu on my laptop in benchmarks with a single graphics.

330W is in the borderland for a laptop with OC'd Gtx980M too.

 

I love the idea of something akin to an EVGA E-Power providing VRMS for the entire laptop. It could be populated according to users choice - even if two options were provided (full and semi). I don't think the solution need be an ugly one but it would require an entire overworking of the power delivery system currently in place. I just wish I haven't saved and sprung for the P870DM-G even if it only had the 980m. Certainly would have had a better upgrade path. I think I've reached the limit with this one besides a bit more RAM.

 

Wow, okay I didn't realize that the laptop could consume that much power!

 

+405w in power consumption is not much for a laptop running at full capacity At least not if you buy something that function as you want
This laptop can use +900w http://forum.notebookreview.com/thr...0-owners-lounge.707507/page-392#post-10236936

 

X79 with many, many cores does tend to get quite hungry