Calculator suggests 1600w PSU?

[not_g]

OuterVision PSU Calculator part list

Motherboard: Desktop
CPU: 1 x Intel Celeron G3930
CPU Speed: 2900MHz
CPU Vcore: 1.2V
CPU Utilization: 90%
Memory: 2 x 4GB DDR4 Module
Video Card Set 1: 3 x AMD Radeon RX 580
Core Clock: 1257MHz
Memory Clock: 2000MHz
Video Card set 2: 3 x AMD Radeon RX 580
Core Clock: 1257MHz
Memory Clock: 2000MHz
Storage: 1 x SSD
Computer Utilization: Always On (24/7)
Gaming/Video Editing/3D Rendering Time: Game On! (24/7)

Load Wattage: 1292W
Recommended Wattage: 1342W
Amperage: +3.3V: 16.7A, +5V: 7.1A, +12V: 104.2A
Recommended UPS Rating: 2600VA
Generated by OuterVision PSU Calculator 2017-12-11 09:29:07

This is what I get from the calculator suggested in the sidebar.

Seems like everyone is using 1000-1200w max. Am I inputting something wrong?

Here is my parts list, is this good to go?

6 - SAPPHIRE NITRO+ Radeon RX 580 Video Card - 8GB 256-bit GDDR5 - PCI Express 3.0

ASUS PRIME Z270-P Socket 1151 Intel Z270 Chipset
Dual Channel DDR4 3866(OC), PCI-E 3.0, SATA 6.0Gb/s, M.2
USB 3.0, DVI, HDMI, ATX Motherboard
Intel Celeron G3930 Kaby Lake Dual-Core Processor
Socket LGA 1151, 2.9GHz, 2MB L3 Cache, 14nm

GeIL Super Luce 8GB (2x4GB) DDR4 2400MHz C16 Memory Kit (GLR48GB2400C16DC) Red

Biwin 2.5" 3D MLC 120GB Solid State Drive Read: 555MB/s, Write: 463MB/s

YIKESHU 6-Pack 6 pin PCI e riser card, PCI-E Riser 1X to 16X Riser Card 164P / 60cm USB 3.0 Extender Riser Adapter Graphics Card Ming ETH 6pin(6pcs 6pin)

Corsair CP-9020140-NA HX1200 1200W 80 Plus Platinum High Performance Power Supply

According to pcpartspicker I should be good to go. Any help is appreciated. Do not want to burn out any parts/house.

Thanks

[Proton2233]

1200 watt for 6 GPU rig is very small. Always use a power supply with a large power reserve. I have 2 rigs. 7 GPU is powered by two power supplies. 750 watt+1000 watt. 6, the GPU is powered by power supply 2000 watts. All my rigs are working without problems. So you can draw their own conclusions between the minimum and the maximum.

[X299]

Ideally, you should not exceed a load of over 70% of the power of a PSU.

[not_g]

I'm just not following how all suggested rigs have 1000-1200w PSU's yet this calculator suggests 1600w. What am I missing?

[Vann]

BBT has a good presentation and overview on what you need to know on PSU's for mining rigs.

https://www.youtube.com/watch?v=ZEedQT0oGYw&feature=youtu.be&t=194