PSU for 12 x GTX1050 ?

[igotek]

GTX1050 needs 75W. I have 12 x GTX1050. So total power needs 900W.

I will use Biostar TB250 BTC PRO.
I will use 750W ATX PSU for the motherboard. The motherboard needs two 4-PIN power connector from the PSU.
I will use 1200W server PSU to power the 12 x USB Risers.

is it suitable choice ?
There is no any power connectors on the GPUs ?
GPUs will use the power from the PCIE ?
GPUs will use the power from the USB Riser ?

[MagicSmoker]

When you use PCIe risers any power the GPU would draw from the PCIe bus on the mobo will instead have to come through the riser.

[igotek]

When you use PCIe risers any power the GPU would draw from the PCIe bus on the mobo will instead have to come through the riser.

GPU will use the power from the PCIE or usb riser ?

[MagicSmoker]

When you use PCIe risers any power the GPU would draw from the PCIe bus on the mobo will instead have to come through the riser.

GPU will use the power from the PCIE or usb riser ?

Hmm, I thought I explained that clearly even assuming that English is not your native language... 

The riser will supply power, not the mobo; only data travels between the riser and mobo.

[igotek]

Got it. Thanks 

1200W server PSU will be enough to supply power to USB riser.
750W ATX PSU will be enough to spply power to mobo.

[Set Ready Go]

GTX1050 needs 75W. I have 12 x GTX1050. So total power needs 900W.

I will use Biostar TB250 BTC PRO.
I will use 750W ATX PSU for the motherboard. The motherboard needs two 4-PIN power connector from the PSU.
I will use 1200W server PSU to power the 12 x USB Risers.

is it suitable choice ?
There is no any power connectors on the GPUs ?
GPUs will use the power from the PCIE ?
GPUs will use the power from the USB Riser ?

Because Your 1050s taket the power directly from the risers you should go with the 6pin pcie risers.

As for power supply i think you should go the easy way.

Buy a cooler master v 1200 Platinum power supply.
Not to expensive and has 12 6+2 pin pcie cable.

[patofet]

GTX1050 needs 75W. I have 12 x GTX1050. So total power needs 900W.

I will use Biostar TB250 BTC PRO.
I will use 750W ATX PSU for the motherboard. The motherboard needs two 4-PIN power connector from the PSU.
I will use 1200W server PSU to power the 12 x USB Risers.

is it suitable choice ?
There is no any power connectors on the GPUs ?
GPUs will use the power from the PCIE ?
GPUs will use the power from the USB Riser ?

I think you need more power, only the gpu consumes like 1920w, I'd recomend you to put 1200W plus 1200W or something like that

[Set Ready Go]

GTX1050 needs 75W. I have 12 x GTX1050. So total power needs 900W.

I will use Biostar TB250 BTC PRO.
I will use 750W ATX PSU for the motherboard. The motherboard needs two 4-PIN power connector from the PSU.
I will use 1200W server PSU to power the 12 x USB Risers.

is it suitable choice ?
There is no any power connectors on the GPUs ?
GPUs will use the power from the PCIE ?
GPUs will use the power from the USB Riser ?

I think you need more power, only the gpu consumes like 1920w, I'd recomend you to put 1200W plus 1200W or something like that

Thats incorrect.
12 gtx 1050ti @ +150/+500  with 75% tdp = around 8-900 watts depending what algo u mine.

[Michael20]

750W psu only for Mainboard, is not really efficient.

Would use the server psu, and seperate on pcie power cable to a micro psu for example https://www.aliexpress.com/item/24pin-DC-ATX-PSU-12V-DC-Input-250W-Output-Switch-Pico-DC-DC-ATX-PSU-MINI/32826517978.html?spm=2114.search0104.3.1.5572dc1eCcnSlN&ws_ab_test=searchweb0_0,searchweb201602_5_10320_10152_10321_10151_10065_10344_10068_10342_10547_10343_10322_10340_10548_10341_10193_10194_10084_10083_10304_10615_10307_10302_10180_10313_10059_10314_10184_10534_100031_10319_10604_10103_10186_10142,searchweb201603_25,ppcSwitch_3&algo_expid=c265af9d-d9ad-48b9-9cb0-c2399892026a-0&algo_pvid=c265af9d-d9ad-48b9-9cb0-c2399892026a&priceBeautifyAB=1

If you have too little pcie's, use a good splitter. 8pcie is for 150watt.