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Seasonic S12II 430 BRONZE ; SS-430GB 430W SLI ATX12V Power Supply
|Price:||$63.67 & FREE Shipping. Details|
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- Supports latest Intel & AMD processors
- Support Vista System
- Support SATA interface
- Over Power Protection
- Over Voltage Protection
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Top Customer Reviews
The five general parameters for a PC power supply are efficiency, wattage, noise, size, and cable modularity.
Fifteen years ago, most power supplies were about 70% efficient. For a 100W load, they would draw about 140W from the wall. Not anymore. We now have five major PSU ratings: 80 Plus, 80 Plus Bronze, Silver, Gold, and Platinum. These correspond to half-load efficiencies of 80%, 85%, 88%, 90%, and 92%. Efficiencies at 1/5 and 4/5 load are about 4% less than half-load.
This is an 80-Plus Bronze unit capable of 87% efficiency. Relative to a Gold unit, for a 24/7/365 system draw of 100W, you could expect to spend about $6 a year more in power costs at $0.12/kWH. Efficiency has other benefits, though: there's less heat to dissipate. Less efficient units require a faster, noisier fan.
This is a 430W unit. PSU fans generally run at idle speed until actual draw is about half the rated wattage. After that, the fan (and noise) ramps up. Optimal efficiency occurs at about half the rated capacity. Loads under 15% of rated capacity have poor efficiency. The optimal capacity choice would position idle load over 15% (for efficiency) and maximum load under 75% (for noise).
Idle draw for a recent, basic system without a fast video card is about 50W. Full load is perhaps 150W. With a fast video card and additional drives, idle load can be 100W and full load nearer to 350W.Read more ›
This PSU has a testing characteristic that owners and repair shops should be aware of: while unconnected to a computer and being checked on a bench with a power supply test tool, the very small power loading of the tester resulted in its showing an out-of-tolerance 10%-low voltage reading on the 3.3V rail only; however, when the PSU was plugged into a PC with a normal power load, then the 3.3V was good (this kind of voltage error under a light-load test may or may not show up in other models and makes, depending upon the design of their regulator circuits).
The power supply is super quiet. That's one of the main reasons I bought this one. Being the nerd that I am, I plugged my PC into my Kilawatt with the old power supply in it and then compared it after installing the new one. My findings were that the old power supply used 6w in standby where this one only used 1w. My PC at idle was 98w with the old power supply and is now 88w. This is on an older system with an old Q6600 processor a fairly weak, low wattage video card. It's just used for work, no gaming. If you have a high powered video card, you'll want more than a 430 watt power supply, which Seasonic does make.
Amazon was the seller on this. I got it in 2 days as I paid for and it was well packaged as always.
So I ordered another one for my latest build. The processor is an Intel i7-4770 (released in 2013, codename Haswell). What I didn't realize that it is not compatible with Haswell's low-power state that reduces power need to 0.05 watts. The work-around is to disable the low-power C6/C7 state in the BIOS. Minus one star.
I've put this PSU through its paces and like a good Seasonic PSU it hasn't let me down even with power fluctuations. This is despite the fact that it arrived to me in nasty shape (literally stunk like rat urine covered in dust) and shipped in a bubble wrap bag. I was deeply worried this unit would be severely damaged from that episode but to my surprise its fired right up and ran fine even without its PSU cable which the character I bought it from also failed to include(surprise surprise). I like this PSU but only get it if you can find it for the right price as it is after all a bronze unit but a good one.
It'll stomp most of the competition but just be aware of its limitations and that its not going to outdo a Seasonic gold rated PSU or have the amps for an intense dual GPU configuration. One should also keep in mind this unit is NOT modular so you'll probably have a fair amount of connectors left at the bottom of the case if this bothers you you might want to look for something else.
The case is also your standard flat black box so no frills there either. However the cables are sleeved which I like and are of good lengths and the connections themselves seem solid. The fan is of good quality and keeps the unit relatively cool while staying quiet.
It also comes with all the proper quality PSU safety features and good regulation overall.Read more ›
Most Recent Customer Reviews
Seasonic is the best there is when it comes to power supplies. This is their budget model, but it performs very well.Published 9 months ago by Timelord
Received in 2 days. I put the build together on a table and had to use a flashlight on the fan to see if it was on. It is very quiet. Read morePublished 14 months ago by James M
Worked great while I used it, but upgraded to a higher voltage output.Published 16 months ago by Jay
Seasonic has been the only brand that has not let me down with power supplies.Published 17 months ago by Seymoreholes