I have access to HP server Power Supplies and found them great for miners.They are very
compact (24-26cm x 8.5cm x 5cm),
highly efficient (up to 94%) and
built to work 24/7 for years.
Comparing to typical ATX PSU you could save 10% or more on electricity!750W Gold 92% with
4x 6-pin PCI-E cables
£59 in BTC shipped to UK, £67 in BTC shipped to EU HSTNS-PL181000W Bronze 85% with
4x 6-pin PCI-E cables
£47.5 in BTC shipped to UK, £62.5 in BTC shipped to EU DPS-800GB A1200W Platinum 94% with
4x 6-pin PCI-E cables
£69 in BTC shipped to UK, £84 in BTC shipped to EU DPS-1200FB-1 A5% discount on two or more bought together.BTC rates for £ from
Coindesk If you need more cables PM me for price as they are significant cost.
I cover 30 days RTB warranty.
When choosing PSU have in mind that they reach best efficiency when
not pushed to maximum load and same applies to miners.
For example running my SP20 (1.7TH/s max) at
1.3TH/s draws under
750W at the wall (instead of over 1200W), and with above 1200W PSU makes them both working most efficiently.
I power three SP20 miners using those Power Supplies for several months now:
I been working with electronics and computer hardware for over 30 years.
I am top rated (100% positive) eBay user, selling computer related stuff for over a decade.
My profile
http://www.ebay.co.uk/usr/geniuslaptopsI prefer BTC payment, and Escrow is welcomed of course.