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my PSU died and I need a replacement recommendation

post #1 of 12
Thread Starter 
Found the HTPC dead this afternoon. It smells like the PSU smoked. We had overnight thunder with some lightning, but nothing else connected to the same surge "protector" seems to have been affected. Thus, I'm not sure of the cause, but I do know I need a new one. I have an old spare ATX PSU I'm powering the HTPC with right now, but it doesn't fit in the case.

The system is just under 11 months ago. It's an ASRock H77M Micro ATX with an i3 3225 using only the onboard GPU. It's inside an Lian-Li PC-C37U, which came with a 300W TFX12V PSU build by FSP Group (labeled FSP300-62LD).

I'm basically looking for a recommendation on another TFX12V PSU, probably 80+ and on the quieter side (fanless is not necessary). The original PSU was 300W, but the system pulls well below 200W (I've estimated max at ~166W and when I measured with a kill-a-watt it never showed > 70W). I'm fine with anything between 200-300W. I'm somewhat sensitive on price... preferring < $50 if possible.

But, I'm got one worry. The 24 pin main power connector of the temporary PSU I've got in there does not reach all the way to the socket on the motherboard. The connector is all the way on the RHS of the motherboard, and the wires leave the PSU all the way on the LHS (which is different from the dead PSU, where the wires all exited on the RHS side). The picture below shows the original PSU sitting on top of the temp PSU. In addition, the main power connector on the original PSU is about 1" longer.



So, I'm basically worried that any PSU I buy might have a main power connector that is too short. How can I make sure it isn't?

Any suggestions appreciated!
Edited by jlv - 9/1/13 at 4:07pm
post #2 of 12
Seasonic 350 watt or Rosewill Capstone 450 watt ( Superflower OEM)

Any Seasonic variant as second choice:

OCZ MkIII or Antec Neo 400 watt for example

Cheap option: Coolermaster Elite for $20
post #3 of 12
Thread Starter 
I see two FSP and two Seasonic PSUs at NewEgg. These look promising:
SeaSonic SS-300TFX $44
SeaSonic SS-300TGW $55
post #4 of 12
Thread Starter 
Quote:
Originally Posted by Mfusick View Post

Seasonic 350 watt or Rosewill Capstone 450 watt ( Superflower OEM)

Any Seasonic variant as second choice:

OCZ MkIII or Antec Neo 400 watt for example

Cheap option: Coolermaster Elite for $20
Will those have long enough cables?
post #5 of 12
post #6 of 12


Andy beat me to it ^

biggrin.gif

I use those on the mobo ones since my case is a Coolestermaster Cosmos II (desktop)
post #7 of 12
I still recommend the Corsair CX430 for HTPC use, if you can wait a week or so til it goes on sale again.

Here's an ongoing article from Toms Hardware regarding budget PSU's:

Part 1

Part 2

The CX500 is reviewed, and is basically the same build.
The Antec HCG-400 is also earned high marks.

The SeaSonic SS-300ET should run about $38.25 after 15% off at NewEgg with code EMCXMVN256
and the Antec Earthwatts 380 is $45 at the moment.
post #8 of 12
I got the Corsair CX430 on sale from Newegg some time ago. As mentioned it does go on sale periodically.

These reviews mention the cable length.
http://www.hardwaresecrets.com/article/Corsair-CX430-Power-Supply-Review/1200
http://www.techpowerup.com/reviews/Corsair/CX430_V2/2.html

Here's the official manual which states the cable lengths.
http://www.corsair.com/en/media/cms/manual/49-000036_revAA_CXv2Manual.pdf
post #9 of 12
Thread Starter 
I didn't even think to look for extension cables. Thanks for that!

The remaining question in my mind: Since I don't need more than 200W... why would I consider a 350W or 400W PSU?
post #10 of 12
Quote:
... why would I consider a 350W or 400W PSU?

The way I look at it, the PSU is like the engine in a car. So, to turn your question around: Why do I need a car that goes 100 mph, if I'm only going to drive it at 60 mph?

Just think of the extra wattage as overhead. There would be less wear and tear on a PSU that has to put out at 25% load, compared to 75% load over time.
If you get a quality 80 plus PSU, that's properly rated, you'll still get a good efficiency rating (80+) for the power you use. You'll also have room down the road if you either upgrade to a better CPU, add a graphics card, etc.

The bottom line then is price. The sweet spot (I feel) for a PSU is at the 400w range. The Corsair CX430 is an 80+ Bronze rated PSU that can generally be has for $20 A/R when on sale.
Now, would I use that same PSU for my desktop, probably not. But I think, for the average HTPC, it's perfect.

Right now, the best bang for buck is probably the SeaSonic SS-300ET I mentioned above (with the discount) if you had to order today.
You can't go wrong with a SeaSonic, Antec, or Enermax PSU.

The OCZ PSU's (I believe) are based off the PC Power and Cooling PSU's.
post #11 of 12
Thread Starter 
OK, given the lack of a sale (today) on the CX430 vs. the SS-300ET (15% off), the price difference is negligible ($38.25 vs. 40). But, I'm afraid the cables in the CX430 are *too* long. I need the main power to be about 14"... and it's 24" in the CX430. It's not that big a case. I do like the look of the fully-sleeved cables, though.

I think I'm going to get the SeaSonic while it's still got the 15% off.

Thank you all for your help!
post #12 of 12
A picoPSU-90 with a 90W AC adapter would run this system if you don't have an array of hard drives hooked up to it.
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