freaksavior
To infinity ... and beyond!
- Joined
- Dec 11, 2006
- Messages
- 8,095 (1.27/day)
System Name | ZeroUptime | M.A.S.S / MM1 |
---|---|
Processor | Xeon 2659 v3 / Xeon 2683 v4 / ARM A14 |
Motherboard | Asus X99-E-10G WS / ASRock x99 usb 3.1 / Apple |
Cooling | NZXT Kraken / Noctua NH-L12 / Apple |
Memory | 16Gb DDR4 / 32Gb DDR4 / 16GB HBLM |
Video Card(s) | Powercooler ATI vega 64 / GT 7300 / ARM |
Storage | Samsung 970 512 Evo NVMe / A lot. / 256 + 512 External TB3 |
Display(s) | Acer Predator X34 / Headless / Acer X34 Non predator |
Case | NZXT H630 |Rosewill 8bay 4u server chasiss / MMM1 |
Audio Device(s) | Onboard / Onboard / Onboard |
Power Supply | Corais HX850 | Corsair TX750 / Internal 250w |
Mouse | g502 proteus core / Headless / g502 proteus core |
Keyboard | Corsair K95 Cherry Blue / Headless / K65 Cherry Red |
Software | Windows 10 / ESXI / Big Sur 11.2.2 |
I've been asking myself that question ever since i decided it was time to get a new psu. so
"With all the hype about multiple 12-volt rails (ads claim that two rails is better than one, five is better than four, etc.), you’d think it was a better design. Unfortunately, it’s not!
Here are the facts: A large, single 12-volt rail (without a 240VA limit) can transfer 100% of the 12-volt output from the PSU to the computer, while a multi-rail 12-volt design has distribution losses of up to 30% of the power supply’s rating. Those losses occur because power literally gets “trapped” on under-utilized rails. For example, if the 12-volt rail that powers the CPU is rated for 17 amps and the CPU only uses 7A, the remaining 10A is unusable, since it is isolated from the rest of the system.
Since the maximum current from any one 12-volt rail of a multiple-rail PSU is limited to 20 amps (240VA / 12 volts = 20 amps), PCs with high-performance components that draw over 20 amps from the same rail are subject to over-current shutdowns. With power requirements for multiple processors and graphics cards continuing to grow, the multiple-rail design, with its 240VA limit per rail, is basically obsolete.
PC Power and Cooling is once again leading the industry. All of our power supplies now feature a large, single 12-volt rail. The design is favored by major processor and graphics companies, complies with EPS12V specs (the 240VA limit is not a requirement) and is approved by all major safety agencies such as UL and TUV"
Read all the psu facts @ http://www.pcpower.com/technology/myths/
"With all the hype about multiple 12-volt rails (ads claim that two rails is better than one, five is better than four, etc.), you’d think it was a better design. Unfortunately, it’s not!
Here are the facts: A large, single 12-volt rail (without a 240VA limit) can transfer 100% of the 12-volt output from the PSU to the computer, while a multi-rail 12-volt design has distribution losses of up to 30% of the power supply’s rating. Those losses occur because power literally gets “trapped” on under-utilized rails. For example, if the 12-volt rail that powers the CPU is rated for 17 amps and the CPU only uses 7A, the remaining 10A is unusable, since it is isolated from the rest of the system.
Since the maximum current from any one 12-volt rail of a multiple-rail PSU is limited to 20 amps (240VA / 12 volts = 20 amps), PCs with high-performance components that draw over 20 amps from the same rail are subject to over-current shutdowns. With power requirements for multiple processors and graphics cards continuing to grow, the multiple-rail design, with its 240VA limit per rail, is basically obsolete.
PC Power and Cooling is once again leading the industry. All of our power supplies now feature a large, single 12-volt rail. The design is favored by major processor and graphics companies, complies with EPS12V specs (the 240VA limit is not a requirement) and is approved by all major safety agencies such as UL and TUV"
Read all the psu facts @ http://www.pcpower.com/technology/myths/