Final Thoughts and Conclusions
Seasonic has taken one of their best Platinum certified power supplies and packaged it in a gloss-white enclosure. The new Snow Silent-750 delivers high efficiency and tight voltage regulation with low AC ripple and the ability to operate in silent-fanless mode at low to mid power levels. Throw in a good assortment of all modular cables and a 7-year warranty and you have a very nice power supply.
Most of these features are shared by other Seasonic top-tier, Platinum certified power supplies except the new white color scheme with silver and gold accents. If you have a white PC enclosure the new white color may well appeal to you, otherwise it might not be of great interest.
The Seasonic Snow Silent-750 power supply should start entering North American retail channels in July 2015 with an expected MSRP of $159.99 USD. The Snow Silent-1050 is currently available and selling for $219.99 USD.
Strengths:
• Unique gloss-white finish with silver and gold accents
• Silent, fanless operation at low to mid power levels (Hybrid S3FC Fan Control)
• Quiet operation at mid to upper power levels
• Outstanding voltage regulation
• Excellent efficiency across a broad range of loads (80Plus Platinum certified)
• Low AC ripple even at 100% load
• Seasonic X-Series DC Connector Panel with integrated VRMs
• Single +12V output can deliver up to 62A (744 watts)
• Four PCI-E connectors (6/8-pin) and two 4+4 pin/8-pin ATX/EPS12V
• 7-Year warranty
• Active PFC with universal AC input
• All modular, flat ribbon-style cables with gold-plated connectors
Minor Weaknesses:
• Quiet fan profile results in higher operating temperatures
• Unique white color may not appeal to everyone
Seasonic Snow Silent 750W Power Supply
I would like to thank our friends at Seasonic for sending us the Snow Silent-750 PSU to review – thank you!
The only thing I would like
The only thing I would like to see is 2-4 fan headers for semi-passive case fans.
Also 15-20% passive operation threshold (X-series) makes more sense then 50% as it is kind of hard to dissipate 375W out of the case without a fan.
I’m sure that you’re mistaken
I’m sure that you’re mistaken about the 375 watt dissipation. At 92% efficient, it would be something like 30 watts, before the fan kicks on.
I have had zero issues with any of the Seasonic power supplies that I’ve purchased and have an older 750 watt model in my main rig. I would definitely consider something like this for a future high-end build.
Exactly. The rest of the heat
Exactly. The rest of the heat is energy used by the PC though it would be more than 8% heat dissipated by the PSU since it would suck some heat back into the power supply.
That’s why it is also based on the temperature.
I was talking computer case
I was talking computer case not power supply case. If you deliver 375W to power your computer you need to get rid at least this amount of heat from the computer case.
Would it be easy to swap the
Would it be easy to swap the fan out for something like a Noctua? I believe some of their 140mm fans work in 120mm openings.
Why would you do that when
Why would you do that when one of the main reasons is to get the special fan? Does Noctua even make fans or do they just rebrand too?
Very nice, but why is it
Very nice, but why is it upside down? Everything is oriented as if the fan is expected to be pointing up, but in almost all cases it will be installed with the fan pointing down. Old cases put the PSU above the CPU with the fan down, and modern cases put the PSU at the bottom with the fan pointing down to pull in outside air from underneath. Why would they be expecting the fan to usually point up?
Valid question is why there
Valid question is why there are so few cases where motherboard is turned 90 degrees.
Actually, there might be more
Actually, there might be more people than you think installing the PSU with the fan up (myself included). With a PSU mounted in the bottom of an ATX case with the fan up – it adds to overall case cooling. This can help suck warm case air out of the sometimes stagnant area below the GPU card. The trade-off is causing the PSU to run a little warmer than it would with the fan down (sucking cool, outside air) but good PSUs like the Seasonic, are rated for up to 50 deg C operation. Not for everyone, but a good option for some.
The fan is sucking air in,
The fan is sucking air in, not pushing air out. It’s blowing over the internals of the psu. If it was installed on the top of a case it would act as an exhaust. Which would be optimal as heat rises.
At page 3, I think that fan
At page 3, I think that fan curve hysteresis is actually increased. Reducing hysteresis actually increasing the frequency of fan switching on-off when temperature is near equilibrium at setpoint.