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Do specified rails correspond to physical outputs on PSU?

Joined
Oct 2, 2004
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13,988 (1.84/day)
System Name Dark Monolith
Processor AMD Ryzen 7 5800X3D
Motherboard ASUS Strix X570-E
Cooling Arctic Cooling Freezer II 240mm + 2x SilentWings 3 120mm
Memory 64 GB G.Skill Ripjaws V Black 3600 MHz
Video Card(s) XFX Radeon RX 9070 XT Mercury OC Magnetic Air
Storage Seagate Firecuda 530 4 TB SSD + Samsung 850 Pro 2 TB SSD + Seagate Barracuda 8 TB HDD
Display(s) ASUS ROG Swift PG27AQDM 240Hz OLED
Case Silverstone Kublai KL-07
Audio Device(s) Sound Blaster AE-9 MUSES Edition + Altec Lansing MX5021 2.1 Nichicon Gold
Power Supply BeQuiet DarkPower 11 Pro 750W
Mouse Logitech G502 Proteus Spectrum
Keyboard UVI Pride MechaOptical
Software Windows 11 Pro
This might be a stupid question, but I don't have PSU's figured out entirely yet because no one ever asked this anywhere and I was wondering how to figure out what 12V rails correspond to for physical 12V outputs?

For example, this PSU in question (BeQuiet Dark Power 11 Pro 750W) has 2x 8pin, 4x PCIe outputs and 5x SATA outputs. I'd assume the 2x 30A 12V rails are dedicated for all 4 PCIe outputs because it's considered the most power hungry components or is it possible that they would use 25A rails on 2 of the 4 ? There is nothing marked and nothing in any documentation about this. How exactly does this work with PSUs?
 

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the manual breaks out the 12v "rail splitting"
12v1 - SATA, HDD, FDDD, 24 pin
12v2 - CPU1 & 2
12v3 - PCIe1&2
12v4 - PCIe3&4

and it is "rail splits" rather than multi rail (even the manual admits that)
 
It also adds this:

1000023450.png

This might be a stupid question, but I don't have PSU's figured out entirely yet because no one ever asked this anywhere

People definitely have, it's just that we've reached the end stage if the usable internet.
 
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