Not enough voltage for desktop gaming computer

They pull plenty of watts, certainly more than an underfed 1500 watt inverter can supply. If only one of his batteries us subpar he's going to have issues. a 1500 watt inverter is not designed to supply that sort of continuous draw that a 1,000 watt power supply demands. It will pull the batteries down quickly, and for every little bit of DC voltage drop you get, you get about double that in AC output drop. High-end power supplies won't tolerate dirty or insufficient voltage very long.

And as you mention you have to high-idle to do anything extensive with any inverter for any length of time. But still you better make sure you have all your crap insured because you're pushing it

 

I type in power converter on lowes. It comes back with power inverter.
You're having problems with both the APU and engine running?
If so.... you got problems.
Geesh.... To begin with....
The alternator on a vehicle generates 120ac. Inside the alternator is what is called a bridge. It converts to DC. Also cuts the voltage down to 12vdc. The APU probably does the same. Simply because an ac generator is much more efficient than DC.
Very old cars had DC generators. They gave up on them. Went to alternators.

Also.... I agree. Computers use nothing in power.
Forget a bigger inverter. You got problems ahead of that.
I might suggest an auto transformer. But you got too bad of problems ahead of your inverter. So forget an autotransformer. You got a power problem. Not just a voltage problem.

 

CPU's don't pull all that much power as the super high power GPU's in gaming machines that demand the high capacity power supplies. A 1,200 watt power supply for instance will supply 1,200 watts continuous to the board and rail, but they can/do provide more during and peak power demand surge needs. I'm not sure what their peak amperage pull is but it's significant.

Also, you'll need 4 good batteries, 3 will be very marginal. (Some companies only run 3)

I had a Alienware gaming 17" laptop once several years ago that I ordered the car-charger for. If the big GPU ever engaged, it would shut down the cig-lighter circuit if it wasn't idling, regardless of the laptop battery level, and that truck had 4 big batteries. Got rid of that power hungry POS and never had any problems since.

 

for some additional perspective
Hardcore PC gamers use an insane amount of electricity every year

How Much Does it Cost to Run Your Gaming Rig or PC? - TopTenGamer

 

I think you're confusing converter and inverter anyways. An inverter goes from 12v to house power, while a converter goes from house power to 12v to put it simply.

 

I admit. Added up. The PC gamer is using a bunch. But it's still only 444watts.
It's really not much when compared to other things. Like a microwave, Air Conditioner, and refrigerator.
You want bad? Try a tanning light. 1,500 watts or more. Yowza!

 

Wow.

Stop

before anything else, what kind of computer are we talking about, desktop means nothing?

AND what are YOU using it for?

AND yes I have a computer that will take up to 1000 watts without a problem when everything is on and running - from the raid sets to the processors doing hard work.

 

I gotta see this one. 1000 watts is 1.34 horsepower. What is it? The subwoofer on the sound system to shake you when you crash your gaming car?

I forgot to tell you people. I had a career testing electrical apparatus. Did electronics as a hobby with a general class ham license. I know electricity well.