@anema said in GTX 1070ti:
Btw What about molex to 6 pin is it okay to use it ? connect it directly to the PSU
“Molex” is a company name, not a specific pin configuration. The single row 4-pin used for old-school IDE/SCSI hard drives is a molex design, as is the 2-row 3-wide 6-pin config used for 75W GPU connectors. Either one will have heavier gauge wires, usually 18AWG or lower, as opposed to 26AWG or worse used in those SATA plugs.
Given the same amperage, the amount of heat generated in a wire drops with increased thickness of the wire. Physics 101. The lower the gauge number, the thicker the wire. The 16 or 18 gauge wires used in 4 or 6 pin molex connectors will generate much less heat than the 26 gauge wires used in some SATA connectors, which have much lower current ratings.
IF YOU KNOW WHAT YOU’RE DOING and have the proper measurement tools, you can check the current draw from your cards when fully utilized AND o/c set to max. If it’s below the current rating of your connector of choice then you’re ok to use it. Otherwise, best to err on the side of common sense and spend the few relative bucks and use the proper stuff, especially when you’re spending many hundreds of dollars per gpu. ;)