AntecHCG, CORSAIR-CX XFX-XTR / Need help buying a PSU and telling if I've been sold refubrished.

fedefrasis

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Hello, Tom's hivemind.
So, I'm in a bit of a pickle.
I have bought a 980 Strix and a 4790k, along with a Z97-A from Asus and 16gb of 1866 ddr3 ram from Gskill. All locked in a closet.
All well... but I'm not sure about the psu.
See, I have an Antec High Current Gamer 750 Modular which is great on paper, but I get the weird feeling that the reason my current pc is running a little worse everyday is the psu. A way to test this would be great! (probably just me though)
Also, I always shut the psu off after I shut off the pc (Is this a problem?) and, while the computer was running, the powe rwnt out two times, and people accidentally unplugged about four.
I bought it last december.
Is there cause to think it might not be up to scratch?
I was going to replace it, but the stores I trust simply don't have psus that good right now.
The best I've found is a Corsair CX750m listed here as a Tier Three.
They also carry a lot of Sentey for some reason, but all from the Metal Blade Power series which I don't know jack about and is not on this site's list.

Buuut... I've found a great one, the Xfx XTR 750 Gold 80... in a shop that people badmouth constantly and some said refubrishes stuff.
So, there is the thing. Whatever I do, I need a new one for the pc I'm leaving to my brother (970 with oc from Zotac and fx 8350)
Do I keep the antec and put the Corsair in that?
Do I go to the other place because refubrishing PSUs is quite hard and spottable?

Is it really that risky to use that corsair?

Thankson beforehand!
I'm from Argentina and we get very little choice
Also, we use 220v for our electricity, not 110v.
 
Solution
The Corsair will be ok; they're problem is durability due to the inferior capacitors used in them. Not stressed, and getting good airflow to stay cool, they're ok.
Remove and reload Chrome. It is somewhat buggy, and I've known this to fix crash issues before.

fedefrasis

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It's just more sluggish. Also, I used to be able to open about 400 tabs of chrome (no, really, I measured it with session buddy and, no, don't ask why, I'm just weird), and now it gets all weird after about 150...
And I get the feeling the games look and run worse with time, like it's degrading performance or something. Again, it could be me, I DO suffer from a minor form of ocd (litteraly, not like "internet i have ocd omg"), so...
Also, since I bought this system I get some weird tearing in video playing and, separately, in the monitor. I assumed some interference static or something, I don't know. I did some tests and I'm not 100% it's the monitor, the video thing, methinks, is the vga.
None of this sounds like the psu?
Also, I STILL have to purchease one for the old system (970 oc and fx 8350, would the corsair do for that or should i risk the shop with the xfx? is tier three really bad if you use the pc a lot?)
 
The Corsair will be ok; they're problem is durability due to the inferior capacitors used in them. Not stressed, and getting good airflow to stay cool, they're ok.
Remove and reload Chrome. It is somewhat buggy, and I've known this to fix crash issues before.
 
Solution

fedefrasis

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It will be used on a 970 oc with an 8350 for gaming about 5 hours on avergae session.
does that count as stressed?
The airflow in the case is quite good, it has 5 fans
 

fedefrasis

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Then I guess I'm taking the antec and the corsair will stay put in the other pc for now.
Thanks!

Just in case I do buy the xfx from those weirdos, is there a quick way to tell if the psu is actually brand new?
 

fedefrasis

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So, its always been there and no issue? Or did it melt or something?
 


It's absolutely normal. Seasonic put the glue on those components to hold them in place.