Originally Posted by ACleverName
so if the new parts fry on the mother board, intel still makes us buy another mother board? Why does this feel similar.
Originally Posted by PriestOfSin
My thoughts exactly...
SFF PCs in HP, Dell, and other office computers have been using 12v only PSUs for a while now.
In my personal experience over the last 5 years, we have had maybe five PSU or MB failures out of thousands of deployed PCs. The pros (size, cost, efficiency, complexity) outweigh the cons given how extremely few things use not-12v.
Originally Posted by JackCY
If those voltages are still needed for these systems then moving them to motherboard helps nothing much at all. Unless I don't know, you want to run a 10 meter 3.3 V cable that will push 20 A but that was never the case even when such voltages and currents were in use.
It's more about cutting costs, making desktop PCs same as laptops when it comes to power supplies. Feed them 12 V from PSU or battery, the rest is the same. Low power devices with barely sufficient power parts.
Most laptops and micro desktops use 19.5v. Type-C charging is also 19.5v in the 100w spec. The batteries in the laptops I support range from 7.4v to 11.4v;
Laptop Model Battery Type Watt Hours Voltage Dell Part Number
Latitude 5*50 G5M10 51Wh 7.4v #451-BBLN
Latitude 5*70 NGGX5 47Wh 11.4v #451-BBUJ
Latitude 5*70 6MT4T 62Wh 7.6v #451-BBTW
Latitude 5*80 GJKNX 68Wh 7.6v #451-BBZG
Latitude 5*90 GJKNX 68Wh 7.6v #451-BBZG
Latitude 7280 F3G33 45Wh 11.1v #451-BBFX
Latitude 7270 J60J5 55Wh 7.6v #451-BBSY
Latitude 7280 F3YGT 60Wh 7.6v #451-BBYE
Originally Posted by skupples
this came up a few weeks back.
sounds terrible, even in the office space... n im'a keep thinking that until someone can convince me otherwise. Now you're gonna be swapping entire main boards for YET ANOTHER ISSUE.
no one better tell the govt about out of spec processor power consumption. they'll shut the whole hobby down!
Dell's office SFF PCs have been using these PSUs since the 20-series, so about 6 years now. The 10-series before it, which had a standard 24-pin, was the one with all the failures. HP has been on 12v-only for a while as well.
How many MB failures do you get on a regular basis? They are really not all that common, and even when there is a swap it's like 5 minutes of work. They do a good job of making these things repairable.