What exists for super high efficiency, lower wattage power supplies? Ideally in the 300-400W range, if not 275W. Both SFX and ATX form factors are fine.
I'm trying to avoid any rackmount-oriented PSU in particular unless they are provably silent (or silent at 2m) at 150W -- likely 100-120W -- or lower load. For example, total system idle may be as low as 40W. Cost not really a factor, but ideally it shouldn't be bananas (like 2x or 3x price) for TCO reasons.
For connectivity I need the usual ATX 20+4, CPU 4-pin, and four Molex connectors for a storage backplane. Modular heavily preferred, but not required.
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80 Plus Platinum power supplies are rare in lower wattages, and I've yet to find a Titanium one. Corsair has the SF450, but with 115V I may only hit 91.5% efficiency under my expected load (150W or less is expected peak), and only 87% efficiency at idle (probably 40-45W).
Seasonic has the Focus PX-550, but since the expected load is so low, efficiency is considerably worse compared to the Corsair SF450.
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I appreciate what you all can come up with!
I'm trying to avoid any rackmount-oriented PSU in particular unless they are provably silent (or silent at 2m) at 150W -- likely 100-120W -- or lower load. For example, total system idle may be as low as 40W. Cost not really a factor, but ideally it shouldn't be bananas (like 2x or 3x price) for TCO reasons.
For connectivity I need the usual ATX 20+4, CPU 4-pin, and four Molex connectors for a storage backplane. Modular heavily preferred, but not required.
-- -----
80 Plus Platinum power supplies are rare in lower wattages, and I've yet to find a Titanium one. Corsair has the SF450, but with 115V I may only hit 91.5% efficiency under my expected load (150W or less is expected peak), and only 87% efficiency at idle (probably 40-45W).
Seasonic has the Focus PX-550, but since the expected load is so low, efficiency is considerably worse compared to the Corsair SF450.
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I appreciate what you all can come up with!