Logisys  PS550AC psu

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the g1 and b1 series is made by fsp whereas the b2 and g2 are made by super flower, bit better quality inside the b2 even if it's bronze instead of gold... but ok, both are worlds better compared to the first one you had in mind 😀

http://www.realhardtechx.com/index_archivos/Page2293.htm
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=393

couldn't find a good review on the g1

the semi modular psu-s are just as good as fully modular ones, it's not like you're ever not going to plug the 24pin power connector or the 8pin atx. the only place were fully modular may be needed is in very small enclosures if you plan to change them to shorter cables

i stand corrected, with 10 years warranty instead of 5 the g1 does should...

System Power Supply Requirements for two MSI GTX 970 Gaming 4GB graphics cards in 2-way SLI mode
a minimum of a 700 Watt or greater system power supply is recommended. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)
the power supply must also have a maximum combined +12 Volt continuous current rating of 50 Amps or greater
the power supply should also have at least two 75-Watt 6-pin and two 150-Watt 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

EVGA 600B Bronze (100-B1-0600-KR)
OEM: HEC
maximum combined +12 Volt continuous current rating: 49 Amps <===== Sufficient
two 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Insufficient
Modular Output Cables: No
Meets Official Intel Haswell Compliance: No
• 80 PLUS BRONZE Efficiency Certification
• 3 Year Limited Warranty
 
EVGA SuperNOVA 750 G1 (120-G1-0750-XR)
OEM: FSP
maximum combined +12 Volt continuous current rating: 61 Amps <===== More than sufficient
four 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
Full Modular Output Cables: Yes
Official Intel Haswell Compliance: Yes
• 80 PLUS GOLD Efficiency Certification
• 10 Year Limited Warranty

EVGA SuperNOVA 750 B2 (110-B2-0750-VR)
OEM: Super Flower
maximum combined +12 Volt continuous current rating: 62 Amps <===== More than sufficient
four 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
Semi-Modular Output Cables: Yes
Official Intel Haswell Compliance: Yes
• 80 PLUS BRONZE Efficiency Certification
• 5 Year Limited Warranty

Either one is way better than what you were selecting before.

Electrical conversion efficiency isn't that important as long as it's BRONZE or better.
 
the g1 and b1 series is made by fsp whereas the b2 and g2 are made by super flower, bit better quality inside the b2 even if it's bronze instead of gold... but ok, both are worlds better compared to the first one you had in mind 😀

http://www.realhardtechx.com/index_archivos/Page2293.htm
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=393

couldn't find a good review on the g1

the semi modular psu-s are just as good as fully modular ones, it's not like you're ever not going to plug the 24pin power connector or the 8pin atx. the only place were fully modular may be needed is in very small enclosures if you plan to change them to shorter cables

i stand corrected, with 10 years warranty instead of 5 the g1 does should like a better option
 
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