Quote from: BleepyEvans on October 31, 2015, 02:41:40 AM

I have an Antminer S5, overclocked and draws 660w from the wall. Can I use a two dual PCI-E cable to power both boards? Or is 330W too much to put through a cable with 18AWG wire?

330W is fine through an 18AWG cable rail. [Official spec would be a minimum of 300W due to 2x 8 pin PCI-E].

Quote from: BleepyEvans on October 31, 2015, 02:41:40 AM

The PCI-E cables I have are 8 pin at the PSU end, and 6 at the other. The CX750M I have on order only has two 8 pin PCI-E sockets and four 6 pin PCI-E sockets. All my PCI-E cables have 8 pin connectors at one end, so it appears the only option at the moment is to use two dual 6 pin PCI-E cables. Or can I buy some cables to make use of the 6 pin sockets on the PSU?

You seem to be confusing the PCI-E connectors and the modular connectors. CXMs have a fixed 8 pin connection that fits into the PSU. The CX750M has two such ports and two such cables. On the connector end of these cables are 2x 6 or 8 pin PCI-E connectors. Two of the pins are detachable depending on if you need a 6 or 8 pin connection, but don't worry about that. The 6 pin connections on your PSU are wired up for molex and sata cable rails, ignore them for mining.

There is only one choice of cables and it will fit your requirements fine.

Quote from: philipma1957 on November 01, 2015, 12:44:43 AM

A) it is a bronze it burns a lot of power.

Its actually about 86% efficient.

Quote from: philipma1957 on November 01, 2015, 12:44:43 AM

B) the cable issue you picked up on

There are no cable issues here, he was asking for clarification because the layout is different to his temporary PSU.

Quote from: philipma1957 on November 01, 2015, 12:44:43 AM

C) lots of better deals available.

Americans get spoilt by choice and price, there simply aren't other reasonably priced and non explosive PSUs in that price range in the UK (he is UK). The CX750M is as good as he's going to get.

Quote from: philipma1957 on November 01, 2015, 12:44:43 AM

If it is too hard to return the cx750m plug in all four jacks and under clock to freq 275 run for a day check cables every hour or two. then bump to freq 287.5 run for a day check cables every hour or two.

There is no reason to do this, the S5 is well within specifications for an S5.

Quote from: philipma1957 on November 01, 2015, 12:44:43 AM

but like I said if it is easy to return return it as it is a poor choice to mine a s-5 with.

It is most certainly not.