Can I trust psu's that come with a case?

theDoItYourselfAmeture · Nov 20, 2013

I'm only going to use around 371 watts (used thermaltake's psu calculator) and the case I want comes with a 500 watt psu. Although I have heard that psu's that come with cases can be unreliable, are my chances better because I'm not trying to pull upwards of 400?

Dark Lord of Tech · Nov 20, 2013

Most bundled PSU's are very poor .

littleleo · Nov 20, 2013

Depends on the brand of the case. What case are you going to purchase?

hunter315 · Nov 20, 2013

No, the only exception to this rule is antec cases that are bundled with their earthwatts PSUs, those are of decent quality, but most raidmax/coolmax/coolermaster units that are sold preinstalled in cases as so bad that they would be hard pressed to convince people to buy them if they weren't bundled.

What case in particular are you looking at?

theDoItYourselfAmeture · Nov 21, 2013

hunter315 :

http://www.newegg.com/Product/Product.aspx?Item=N82E16811144230

going to put a i7 2600k and a gtx 650ti into it along with all fan options.

hunter315 · Nov 21, 2013

If you look at the pictures for the case you will see its an apevia PSU with a blue fan, the only blue fanned 500W PSU Apevia offers is this one
http://www.apevia.com/ProductsInfo.asp?KEY=WIN-500XSPX

Best case you have 34A available on the 12V rail, not great, but alright, likely only 30A from their normal current rating, the corsair 430CX has more current available. Other issues are the max ripple numbers, ATX spec states that you can have 120 mV of ripple on the 12V rail and only up to 50 mV of ripple on the minor rails, they are speccing 100mV of ripple on the 3.3 and 5V rails, 100 mV of ripple on your 3.3V rail is going to toast your ram very quickly, along with other components down the line. A good PSU should be able to keep those numbers below 70 mV and 30 mV, some of the great ones can keep it below 30% of the ATX limits. It also advertises efficiency >70%, thats pretty sad for a modern PSU when we are now seeing units that can do >85% from 0-100%.

I'd say overall that is a POS PSU and that case is a trap. I'd see if they sell the same case without that PSU and then get a cheap but good 500W unit to put in there, that apevia unit will likely damage things.

theDoItYourselfAmeture · Nov 21, 2013

hunter315 :

If you look at the pictures for the case you will see its an apevia PSU with a blue fan, the only blue fanned 500W PSU Apevia offers is this one
http://www.apevia.com/ProductsInfo.asp?KEY=WIN-500XSPX

Best case you have 34A available on the 12V rail, not great, but alright, likely only 30A from their normal current rating, the corsair 430CX has more current available. Other issues are the max ripple numbers, ATX spec states that you can have 120 mV of ripple on the 12V rail and only up to 50 mV of ripple on the minor rails, they are speccing 100mV of ripple on the 3.3 and 5V rails, 100 mV of ripple on your 3.3V rail is going to toast your ram very quickly, along with other components down the line. A good PSU should be able to keep those numbers below 70 mV and 30 mV, some of the great ones can keep it below 30% of the ATX limits. It also advertises efficiency >70%, thats pretty sad for a modern PSU when we are now seeing units that can do >85% from 0-100%.

I'd say overall that is a POS PSU and that case is a trap. I'd see if they sell the same case without that PSU and then get a cheap but good 500W unit to put in there, that apevia unit will likely damage things.

thanks for the info, Im on a very tight budget and just trying to save $40 on a decent psu, even though its kinda important.
So ill just wait for Christmas and see if I can get a 450 watt psu.

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Can I trust psu's that come with a case?

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