Quote from: klondike_bar on January 07, 2015, 03:49:45 PM

Quote from: Zich on January 05, 2015, 08:19:59 AM

Quote from: mrc_spot on January 05, 2015, 06:19:17 AM

My two S5 will arrive on Wednesday so I was thinking as using my one "Cooler Master Silent Pro 1200W Gold PSU" for both. Will that work? Also whats the difference between Gold & Bronze i.e. which one draws less power?

I don't think that will work. OgNasty review stated that with default setting the power consumption is about 661 watt.

the 661W number must be at the wall - the S5 spec indicates a draw of about 560-600W on 12V DC. I pushed a unit to 287.5MHz before it tripped my CS650M (gold ATX with 612.5W 12V rail - trips somewhere around 630W) and ran at 362.5MHz 24/7 for several days without issue, indicating about a 600-610W load on the 12V rail

a 1200W (GOLD - most are when over 1200W) PSU should be able to run two S5 units at stock, or if necessary slightly below. A bit of overhead is better (<95% load is a good target for the PSU), so a 1300W PSU would give you that overhead and likely allow a bit of overclocking to achieve 1.21TH/S5

dont o for a PSU any less than gold. The difference between gold and bronze at 90% load is about a 3-5% difference in efficiency (or ~50W on a 1200W draw) If this is ~$3/month more for electricity the savings will cover the higher PSU cost within a year or two, and the supply will be better quality and resale value

Thanks for the reply.
I already bought Corsair CX750M for each, its cheap but I will go for the gold next time.

I don't know for some reason one of them gets tripped even at 350 frequency (May be it was heat). Now testing with updated firmware.