So i want to make a computer with an external power supply with an internal DC/DC power converter like the Pico PSU.
I've been looking for a high watt 12v external brick so i can use powerful graphics cards. My plan is to run a 12v line to the Pico PSU, and then separate 12v lines directly to the graphics cards' PCI-e power connectors.
In my search, the highest watt 12v brick i could find was 220w. I found a 330w brick, but its 19v which means i wouldn't be able to run it straight to the graphics cards' power connectors.
EDIT : thought i found a high watt linear PSU, read the specs wrong. Anyhow, question still remains below.
I looked up the differences between Linear and Switching PSU's, and this is what I came up with.
Linear Pro's:
Better load regulation
Better line regulation
Better ripple
Better transient recovery
Better EMI
Better leakage
Switching Pro's:
Better efficiency
Smaller Size
Lighter weight
Linear PSU's only get up to around 60% efficiency instead of 90% like in switching. And then linear PSU's have a lower power density (larger) and weigh more.
Are there any other issues with plugging a 12v line from a linear PSU directly into a graphics cards' power plugs?
Are there any other issues with linear PSU's? Are those 3 negatives the only reason PC's dont use linear PSU?
I've been looking for a high watt 12v external brick so i can use powerful graphics cards. My plan is to run a 12v line to the Pico PSU, and then separate 12v lines directly to the graphics cards' PCI-e power connectors.
In my search, the highest watt 12v brick i could find was 220w. I found a 330w brick, but its 19v which means i wouldn't be able to run it straight to the graphics cards' power connectors.
EDIT : thought i found a high watt linear PSU, read the specs wrong. Anyhow, question still remains below.
I looked up the differences between Linear and Switching PSU's, and this is what I came up with.
Linear Pro's:
Better load regulation
Better line regulation
Better ripple
Better transient recovery
Better EMI
Better leakage
Switching Pro's:
Better efficiency
Smaller Size
Lighter weight
Linear PSU's only get up to around 60% efficiency instead of 90% like in switching. And then linear PSU's have a lower power density (larger) and weigh more.
Are there any other issues with plugging a 12v line from a linear PSU directly into a graphics cards' power plugs?
Are there any other issues with linear PSU's? Are those 3 negatives the only reason PC's dont use linear PSU?
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