First Build Runs On 350w PSU, But Not 600w PSU

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Light_R

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Oct 30, 2015
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Hello.
My brother has just put together his first home built system and has run into a rather strange issue. He planned to use an old 600w power supply from a disused computer we had lying around and it seemed to work on start up. It ran for about 20 minutes before the entire thing went dead. We hooked up a 350w to see if the PSU was the problem and it ran just fine.
So we went and bought a new 600w Thermaltake to replace it. But now the new one won't work either where the 350w still does.

The PC specs are:
PC Mate LGA 1150 Intel Motherboard
EVGA GTX 970 graphic card
Intel Core i5 Devil's Canyon Quad-core processor

If anyone could give us some insight as to what is happening, it would be very much appreciated. Thank you.
 
Solution
Karadjgne
There are no guarantees in electronics that everything will work, will work to theoretical standards or beyond. Psus are no exception. There are some OEM designers like Seasonic, Delta, Chicony etc who go above and beyond to minimise DOA, bad performance, limited lifetimes etc and these units made usually end up in the top tiers. Other OEM's are more interested in the Almighty Buck, so mass produce anything, good and bad, because the profit made far exceeds any refunds. These units often end up as lower or lowest tier units. And then there is resellers, the 3rd party Brands, whose engineers spec out a psu. Some of these, like xfx or Antec, take an existing design and do basically nothing more than slap a coat of paint on it, so ending...
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Light_R

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Oct 30, 2015
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We tried that already, same result I'm afraid.
 
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KingDingDong

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Sep 10, 2015
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Then put it in your PC and record the results. This data will be very valuable in determining where the point of failure you are experiencing is.
 
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Karadjgne

Karadjgne

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There are no guarantees in electronics that everything will work, will work to theoretical standards or beyond. Psus are no exception. There are some OEM designers like Seasonic, Delta, Chicony etc who go above and beyond to minimise DOA, bad performance, limited lifetimes etc and these units made usually end up in the top tiers. Other OEM's are more interested in the Almighty Buck, so mass produce anything, good and bad, because the profit made far exceeds any refunds. These units often end up as lower or lowest tier units. And then there is resellers, the 3rd party Brands, whose engineers spec out a psu. Some of these, like xfx or Antec, take an existing design and do basically nothing more than slap a coat of paint on it, so ending up with some really great units, or not so good, depending on the original design and OEM.

All of this adds up to nothing more than chance. Anyone using a given psu has a chance of failure, and a chance of not. Depending on what any given unit is determines the chances. Thermaltake psus are mediocre designs, spec'd out to decent to miserable OEM's, where the entire thought process is oriented around profit, not customer satisfaction. This ends up with mediocre to worse psus that have a greater than average chance of failure, in some cases going as far as catastrophic failure. But that also means some units will work just fine, within certain limitations.

It's Russian Roulette. Seasonic tries to make sure the gun isn't loaded, with Corsair the chances of the gun being loaded is determined by series, and with Thermaltake, you know the gun is loaded and how many bullets is determined by series. With the TR2 series, you are looking at 4-5 bullets in a 6 shot revolver.
 
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