hp z800 with either gtx 1050ti 1050 or 1060 3/6gb

[kurtzgodel]

I'd like to upgrade my hp z800 with either gtx 1050ti 1050 or 1060 3/6gb. Main usage would be gpu computing for Deep Learning libraries. Let me know if any of the above cards would work. I'm ready to remove the hard drives to increase available power. Below are my current specs:

PSU
850 watts

Operating System
Windows 10 Pro 64-bit

CPU
Intel Xeon X5650 @ 2.67GHz 53 °C
Westmere-EP 32nm Technology
Intel Xeon X5650 @ 2.67GHz 49 °C
Westmere-EP 32nm Technology

RAM
24.0GB Triple-Channel DDR3 @ 665MHz (9-9-9-24)

Motherboard
Hewlett-Packard 0AECh (CPU0 PROCESSOR) 50 °C

Graphics
ASUS VS247 (1920x1080@60Hz)
MONITOR (1920x1080@60Hz)
768MB NVIDIA Quadro FX 1800 (NVIDIA) 59 °C

Storage
111GB Samsung SSD 840 EVO 120GB (SATA (SSD)) 32 °C
931GB Seagate ST31000528AS (SATA ) 30 °C
465GB SAMSUNG HD502HJ (SATA ) 31 °C

Optical Drives
hp DVD-RAM GH60L

Audio
High Definition Audio Device

[DGroves]

all of the cards listed should pose no issues power wise with the stock 850 watt supply, the 1060 card can draw 120 watts

with the 1050 series not even needing a aux pwr connection as they are under 75 watts, and powered directly by the pci-e bus

[kurtzgodel]

I appreciate the response. Thanks. My PSU has got only one 12A rail, do I need to use an aux power line for 1060/70/80? can you pls forward me to an online resource how to do it? also, is it wise to do so?

[DGroves]

again, please download the z800 "service manual" and read it

the z800 has a multirail type power supply not a single rail, the supply is a custom unit that only fits the z800

and depending on the power supply  two or three six pin GPU aux connectors

the stock 850 watt has two gpu aux

the optional 1250 watt has three aux