freaksavior
To infinity ... and beyond!
- Joined
- Dec 11, 2006
- Messages
- 8,095 (1.20/day)
System Name | Server. Gamer. Worker. |
---|---|
Processor | Xeon 2659 v3 / 9800x3D / m1 pro |
Motherboard | Asus X99-E-10G WS / ASRock steel legend x870 / Apple |
Cooling | Noctua low profile / Noctua NH-L12 / Apple |
Memory | 64Gb 2133 ecc ddr4/ T-force 6400 32Gbddr5/ 32GB HBLM |
Video Card(s) | Evga gt 7300 / zotac 3070 / m1 pro |
Storage | Samsung 970 512 Evo NVMe+3x14Tb /2Tb 990 pro + 1Tb HP 920 ex. / 1Tb |
Display(s) | Headless / Acer Predator X34 / Acer X34 Non predator |
Case | NZXT H630 |Rosewill 8bay 4u server chasiss / MacBook Pro 16” |
Audio Device(s) | Onboard / Onboard / Onboard |
Power Supply | Corsair TX750 / Corais ax860 | / Internal 250w |
Mouse | Headless / corsair m65 / g502 proteus core |
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/