Latest posts of: causalloop

Question guys.

With 218.75 and 225 its necessary to use 4 PCIE? Or with just 2 PCIE its ok?? For 218.75 im sure i can just use 2 PCIE, but for 225 frequency im not that sure.

right now i have 4 PCIE for both, 716W total

My recommendation is to use four cables for better stability.
But its not a necessity. If you are overclocking I now strongly recommend(unlike earlier) to use 4 power cables.

I wanted to use Corsair CX750M for both, but yeah i have one at 225 frequency, so thats OC and i suppose with just 2 PCIE wont work very well maybe

Hey guys, just wanted to chime in here. I parsed through some of this thread but this thread is so big (so this may have been mentioned before - in which case I apologize)...

Anway, I have a CX750M and 2 S3+'s. Kept tripping the breaker (turned out to not be my fault), but in the course of tracking things down, I had my two miners OC'd to 237.5. Not a huge jump over the base 225, but its easy to forget that an overclock bumps the power usage up (quite a bit apparently).... anyway, I grabbed my ever-so-accurate kill-o-watt meter and had it display the amps/wattage usage and was floored that I was drawing over 850 watts! I've had it set up this way for almost 2 weeks! The fact that the power supply didn't eat itself I think is a testament to quality engineering... suffice to say, I'd like my PS to last so I dropped them back to the stock 225 and was surprised to see the meter only drop to about 775 watts. I'm sure there's some math in there that should leave me un-surprised, but even accounting for inaccuracy in the meter, its clearly pushing the PS to its limits.

Interestingly, (and un-surprisingly) the power cord was very warm - but the 6 pin connectors to the rails weren't. I'm guessing this is just a quirk of the 120v ac to 12v/5v dc conversion, but I was expecting the connectors to be hot.

ANYWAY... CX750M - just enough for 2 stock S3+'s, but I'm a bit wary. Unfortunately getting a bigger PS isn't going to solve the problem until the chick with the space heater under her desk decides to use a different outlet... Roll Eyes

I'm considering getting clever about it and getting the bigger PSU and setting some sort of timer, but I'm not sure how much effort I want to put into that when I can just sneak into her cube after hours and switch the plug (a circuit tester would be handy...)

cheers!