They are pretty pointless aswell to be honest. Probably wont even cover the cost of the elctricity they use.

So how many 12v fans are you going to need to match the CFM of that many machines in one space?

Thats a good error rate. Your only limting factor now is the psu. What psu are you using?

Not really. You need to chexk the pinout of the each plug.

Have you enabled 4G decoding in the bios? Have you set pcie config to gen1 or gen2?

You are wrong the EVGA has ONE 12v rail but thats irrelevant as the psu has not got enough connectors and would require adaptors which are just not worth the risk really.

Yea heres a tip, dont buy them.  They are not HOME miners. They are designed for industrial areas. If you have a waterproof garage and live in a temperate climate then you best bet is plug them in out there. Also make sure whatever electrical circuit you have them running on is able to cope with the 6Kw+ of juice they will be pulling.

Also there is nothing you can buy that will do a decent job of making them quiet. You cannot really chane the fans, you would have to build a soundproof cabinet within a room and have more fans and ducting to provide cool air and exhaust the hot. You will need to work out CFM of the existing miners then work out soze and speed of fans to supply enough airflow.

Im currently running 5x EVGA 1070Ti SC and using 720w sonif you are planning on using a 1000w psu you will need to make sure your clocks are as efficient as possible.

Have you changed the pcie speed to gen1 or gen2 in the bios/uefi?

No the temp is based on the ambient temp of where the miner is. You can still go over the top woth OC even if its cool. For example, you can OC the S7 and have it sitting in the Arctic and the temp will be ridiculous like 5c but that doesnt mean its not really stressed out.

60c is about the ideal temp to keep them at. If you turned the fan speed down they would get to that temp faster and then get too hot. Its about finding a balance for the temp while simutaneously watching the HW errors and how much power is being drawn so you dont blow your PSU aswell.

+1. The airflow path is too restrictive.

Yea thats basics of overclocking. The more you increase the Freq the more power it uses and the hotter it will run. Most antminers ive had are happiest around the 60c temp mark.  Also watch your HW error rate aswell upto 5% is fine if it starts to increases dramatically then its pointless going that far with the OC.

If you have done any research on the forum which is vast, you should quickly realise that ive your suggestion was possible then everyone would be doing it. But instead EVERYONE buys mobos with as many pcie slots as possible or use products that expand existing slots with other pcie hubs.

Check out my post in this thread:-

https://bitcointalk.org/index.php?topic=2648814.0

Same sort of rules apply for currency exchanges (not including paypal deals as no one can protect someone from a reversal of payment).

No

As said. Post a picture of what you are selling with your forum name and date on. Guve details about it, i.e any problems it may have (if any), basically be as transparent about it as possible. Use an escrow service such as Ognasty or phillipma1957, who will charge you a fee. They will hold the funds until the person you sell too has comfirmed receipt of the item and it is what you said it was. Then you will get the funds from the escrow.

Its the best way to deal with sales on the forum.

Ive recently switched to gen2 pcie in the bios settings snd it has sorted a similar provlem i was suffering with.

As far as I know yes. But I have no experience with this type of unit. Only ATX and server psu with breakout boards and picos

Im in the UK and have no problems.

No idea to be honest. The cheap chinese stuff is all a gamble. At least with the dual server psu type you know that youcan swap out the psus for good quality ones and the only failure area is the connectors and the cabling provide by the manufacturer of the unit