UPS n.1 Nilox Line Interactive 2100VA
same as for antec
Why UPS? I would not put my money on UPS, unless there are VERY big generator allso outside that auto-starts on power-out + also BIG mining-farm.
RAM n.1 Kingston Technology HyperX 4GB DDR3 1600MHz
May i will need 8Gb if use more than 3 gpus?
I have four GPU's 3x5850 and 1x7850 on one MB with 4Gb of ram. They work just fine, and only 2Gb is used.
Cables powered risers usb 3.0
Do i need also > PC Motherboard On/Off/Reset/HD LED/Power LED switch ?
Yep, you can use usb-risers,, but traditional will do the same. Especially when you're putting your first-three GPU's. There aren't such big distances to the motherboard.
You won't need those leds, but an powerswitch would be nice if you dont want to re-start or force-boot your rig by screwdriver.
then i will expand to 6 GPUS i hope there is a tutorial step by step to solve issues of error 43.
I must admit that I don't know anything about this error. What is it and where does it come from, and only windows?