PSU tier list 2.0

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Guys, need some help. EVGA 750 B2 or EVGA 650GS, for a system that will mainly have an i5-6500 and R9 390? the GS is more expensive than the B2 for around $15 dollars here in México.
 
EVGA has gone the Corsair route with trying to get as many model lines as possible on the market here recently. As I'm not privy to either companies business models I can't say why it makes sense but it does to them. I'd guess market saturation plays into it.

Superninja while there is a difference in quality ( and warranty length ) the real world difference is pretty small. None of those units are in any danger of being out of spec and damaging components or anything like that. Regulation is good enough for all but extreme overclocking etc.
 



I 2nd that ^^^
 

I'd grab the B2. Quality should be comparable, just not modular and slightly less efficient.


That's what I've heard.
 


• I only got to the first PSU when I realized it was $110 on newegg. Great job reading.

• The broken PCB was specific to his unit

• Really, just yes
 


I really don't :/
 


I don't believe lethal would be the correct word, this unit is pretty much functioning as a tier 2, plus a tier 3 unit isn't even lethal to parts. It's also got great reviews on newegg, high quality capacitors, and great ripple suppression. The only "issue" is the voltage stability, which is average on the Photon. You can read the review on JohnnyGuru
 


I like the Photon. It is just as good as the EVGA GS series.
 


Which just happens to be just about the single BIGGEST problem you DON'T want to see a power supply have. A little noise or a little ripple can be tolerated, somewhat, but "a little" voltage regulation gone bad can mean the end of everything in your case, in very short order.
 


So you're saying that if I gave YOU a PCB and a handful of Japanese capacitors, along with the rest of the components required to build a power supply, and the necessary soldering tools, you could assemble one with the same quality as say, Seasonic? Exactly, not. Just because component selection is good, does NOT mean that build quality is good. Poor soldering, bad placement in the design phase for internal arrangement of components, lack of heatsinks, poor cooling configuration or scheme and fifty other things can all result in a poorly built/designed unit regardless of whether it uses nothing by rubycon caps or some third rate brand.
 
Don't mistake efficiency labels as anything other than that. Just because a unit is labeled with 'Gold' doesn't mean it's any better or worse than a unit labeled 'Bronze'. It's just an efficiency rating of somewhere over 80% at 20%/50%/100% loads.

On the flip side, chances are good that a gold unit is better designed than a Bronze unit, use of tighter spec'd circuitry, better caps etc all leading to better efficiency. But thats just design. Says nothing for the actual build or the ability of the design. There are plenty of gold units with such poor implementation that they honestly should never have been built. The Corsair RM 750/850 for example. Excellent ripple, voltage, everything but thermal. Such poor implementation that thermally reaching 100% load was a serious issue. Failure after failure on load testing, but rated gold and priced way over reality. Give me a Seasonic or xfx 750 anyday.

The tier ratings are a guide. They are based on reviews from ppl who know what a psu really is, down to its bones. But they remain opinions based mainly on new tested units. The one thing the tiers represent over just the reviews is also user opinion. Take the Corsair CX line. Most tested very well when new, easily tier 3 or better. Time being used however has shown average lifespans to be around 18 months. That's pathetic, so is factored into tier rating. Why choose a tier2 bronze over a tier1 gold? Apart from price, usage and other considerations, that tier2 bronze unit is proven. It's been through the wash and come out shining. The tier1 hasn't.
 
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