Desktop gaming to laptop build

As difficult as it may seem there are and and Intel platforms of higher power than most laptops that offer a 12v ac/DC adapter plug like a laptop with a pci-e x16 slot now with that being said a charge controller DC/DC convertor and a single deep cycle lawnmower battery with 120amp hours at 200watt will give roughly 3 hours of life. A lawnmower battery being about 5-10 lbs there are lithium ion rechargables with better amp hours like multiple laptop batteries in a series setup will allow the same voltage with higher amp ie the DC/DC convertor. I have tested the lawnmower battery on a 450watt system and it lasted 1.25 hours while pushing the system with prime 95 and I was able to get stable current from said battery with an automotive capacitor.

Exactly, the system you want to build will weigh in between 15 to 20 pounds at the least versus a laptop with a external graphic card weighing in at about 8 pounds. when I am out in the rv and running movies threw my projector at the campground weight is my concern. My Alienware with external graphic card works but right now I am hoping to win the build Ben did last week or buy a Raspberry Pi to build a media center so I have light machine for movies and use the Alienware to game on. Together these would be only 9 pounds versus 15 pounds. Balancing power versus weight is the name of the game. Plus I get 8 hours of my laptop versus 3.

I personaly cannot get along very well with laptops, so a system like this is still prefferable compared to a laptop, despite the extra weight. The extra weight is also not too bad for me. In the past I have carried a 24 pound ossiloscopoe as hand luggage on an international flight. Don't get me wrong, I understand that this device will be very impracticle, but I stiill feel it is worth trying to build.

Samuel Doye said: "I personally cannot get along very well with laptops, so a system like this is still preferable compared to a laptop, despite the extra weight."

You did read the title, right? The author wants a LAPTOP made with the motherboard of a desktop. Its still a laptop that will be unwieldy, costly, heavy, and not very heat efficient.When I did a preliminary price run down you are looking at around 2000 dollars versus my alienware and external graphic card costing me 1800, and I maxed out specs on the alienware and not the device suggested. Using two power supplies, high end graphic card (or two), a battery charging system, and a decent CPU will spike heat inside to high levels. The size alone will not make it practical since a standard power supply on the short side is still two inches, most cpu heat sinks get thick (around 2.5 to 3 inches), if you used a water cooling system it would be thinner but you would need more power from the power supply. Using a briefcase would not be large enough you would need something the size of this at the very least 11 In x 7 In x 4 In Aluminum Case but more likely you will need this http://www.harborfreight.com/tool-storage/tool-boxes/18-in-x-6-in-x-13-in-aluminum-case-69315.html and that will not fit very well on a airplane tray to use.

For all of these reason I belive this is not a good build idea for Ben.

Ah, when I talked about disliking laptops I was referring to myself. I agree that the build would not be a good fit for Ben, but for about a week prior to this post I was considering attempting a proof of concept version of this mod using various outdated parts that I have lying around. I also agree that this will be very impractical to use, but I am interested in doing it largely as an engineering challenge to myself. I was also looking at just running off of mains for my build since battery power actually does not matter that much to me. I understand why you are trying to dissuade people from attempting this build, and I agree that most of your points are perfectly valid, but I feel that in my case, purely as a hobby project this build is worth attempting, even if the end result Is going to be a little disappointing.

Ah, when I talked about disliking laptops I was referring to myself. I agree that the build would not be a good fit for Ben, but for about a week prior to this post I was considering attempting a proof of concept version of this mod using various outdated parts that I have lying around. I also agree that this will be very impractical to use, but I am interested in doing it largely as an engineering challenge to myself. I was also looking at just running off of mains for my build since battery power actually does not matter that much to me. I understand why you are trying to dissuade people from attempting this build, and I agree that most of your points are perfectly valid, but I feel that in my case, purely as a hobby project this build is worth attempting, even if the end result Is going to be a little disappointing.