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mpreda | 1 year ago

Step the GPU voltage up to 48V. (anyway you make a new connector that's not compatible with existing PSUs. Why not actually fix a problem at the same time, once and for all! [48V should be enough for anybody, right?])

discuss

order

jmrm|1 year ago

Not a bad idea IMHO. There are already computers (servers mostly, but also integrated models) who only have 12V power connections and the mainboard does the step-down voltage conversion, and IIRC some companies wanted to do the same to regular desktops.

I would be totally happy if the next gen of computers have 12V outputs to the mainboard and CPU and 48V to the GPU and other power-hungry components. This would make the PCB of those cards a bit bigger, but also would have less power losses and less risk of overheated connectors on the other hand.

B1FF_PSUVM|1 year ago

> Step the GPU voltage up to 48V.

Meh. Might as well ask for its own AC cable and be done with it.

mpreda|1 year ago

But I want fewer cables, not more.

Kirby64|1 year ago

Until the US changes their AC power connectors, we just don’t have a use case for it frankly. When the entire system is going to always top out at 1200W or so (so you have an extra few hundred watts for monitors and such), we’re pretty limited to maximum amperage.

ielillo|1 year ago

The USA has 240 volt plugs. They are only used for high power appliances such as AC or ovens. If you want, you could add a plug for your high powered space heater AKA gaming PC.

mpreda|1 year ago

Now I must use lots of rather thick cables in my desktop (because I run GPUs).

Imagine that the GPU would instead suck up all the power it needs through the PCIe connector, without all those pesky cables. (right now PCIe can provied 75W at 12V, i.e. 6.25A; that same current would provide 300W at 48V).

RetpolineDrama|1 year ago

I pulled a fresh 20A (120V) circuit just for my 5090 build.