Replacement computer ATX power supply

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  • Updated 2 years ago
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I am thinking of upgrading my video card, which will also require replacing my computer's ATX power supply for a higher wattage unit with a 6-pin video card PS connector.  I am probably looking in the 500-600W category

My question is...which brands are most recommended, especially from these this order:

1) RFI generation  (I want an RF-quiet supply.
2) Fan noise  (I want an acoustically quiet supply)
3) Efficiency  (I want to be as good to the environment and my pocketbook as possible)

Any suggestions?


Ken - NM9P
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Ken - NM9P

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Posted 3 years ago

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Gerold Blossey

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Hello Ken,  I replaced a power supply in November with a Lepa MaxBron 800W 80PLUS...".  that I purchased from Amazon for approximately $80.00 plus tax and shipping.  Hope this helps.
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Ria - N2RJ, Elmer

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We used a corsair modular power supply for the last build. Very quiet, RFI wise. This replaced an old dell which had a noisy power supply that would wipe out 80m. Can't go wrong with Corsair or Antec. 
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Rob Fissel

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Second Antec. You pay for what you get. Default cheap PS that came with an enclosure I bought back in 2014 was absolutely filthy. I've done several builds over the last few years and Antec has yet to let me down. 
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EA4GLI - 8P9EH - Salvador

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Buy it from a place where you can return it... I bought a Corsair 750W modular (expensive) one because a lot of online recommendations and it supposed to be better shielded for RFI and guess what, it is the main source of noise in my station.
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Ria - N2RJ, Elmer

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It was from micro center here which has a good return policy. 
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George Molnar, KF2T, Elmer

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Antec VP-450 Power Supply 
by Antec 

This one worked well for me on my last Windows machine (quad core with heavy duty graphics card). Quiet physically and electrically, too.
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Scott N8UMW

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I've had excellent luck with CoolerMaster and Thermaltake supplies. Midline and higher. The cheapest supplies from most manufacturers are RF generators. Computer monitors certainly are not all RF free either.
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Ross - K9COX

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I will second for Thermaltake, electrically and mechanically quiet. Quality construction right down to the cabling. Very reliable.
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Keith Flint

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The Silencer MK3 500W works well for me (Amazon)
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NX6D Dave

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I use a 600W Corsair modular PS.  It's pretty old now, so I can't answer for what that company is doing these days, but it has worked well for me.  Use a good case and ground it well.
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Ria - N2RJ, Elmer

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I get them from Micro Center. They always have rebates for them.
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I have used Corsair in my last three builds

Keith - AC9S
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I've had great success with CoolerMaster.  There are levels of power supply performance.  You will find PSU designated such as 80 Plus Bronze, Silver, Gold & Platinum.  This is only a specification of PSU efficiency and has nothing to do with RFI or any other characteristics. 

If you add a high-end video adapter to many PC's it will typically draw more current than the rest of the rig.  For an i7-5960X, EVGA 980 video and 64 GB RAM I use a coolermaster 1000W Silver.  All of the the other rigs are i7-4770K or 4790K with EVGA 780 video and 32 GB RAM and they run off of a CoolerMaster 850W Bronze PSU. 

I try to have some headroom in the power supply unit.  Before I install a new PSU I check it on the bench with both a spectrum analyzer and scope (for ripple) and so far every CoolerMaster has been clean.

I once tested a Corsair 600W PSU that was going into a friends new PC build and it was very clean.
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Tim Nolen, KE4UK

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Antec EarthWatts Platinum Series EA-650 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Active PFC Power Supply - Intel Haswell Fully Compatible
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Marty Gibson

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yep ..corsair. cant go past them. a little more expensive than others in OZ but well worth it.
zero rfi.. quiet as a mouse, running 3 tower fans.

my samsung monitor ac dc adaptor produces more rfi.. now thats annoying. 73s
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Gary m0gme

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Marty you cut the adapter off and connect the monitor to your radio PSU, My monitor psu's output was 18vdc but still work just fine at 13.8vdc and no rfi.
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David Warnberg

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I'll throw my vote out there for a corsair as well.. using a corsair case and corsair HX750 power supply.. quiet and no RFI

Good Luck

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Clay N9IO

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Corsair will be my only ps since this last build went so well a few years back. Mondo quiet Ken...
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Steve Belcak

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Hi Ken..... I also support Corsair as a good curiosity....what video card are you looking at?

Steve K3WKM
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Ken - NM9P

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Haven't decided, yet.  I'm toying with something like an AMD Radeon R7 360.  I am not sure that is the right one, though.  I am in research phase, making long-term plans to move to a 40-48 inch QuadHD/4K, perhaps a Samsung, that will become the equivalent of 4 smaller monitors on one screen.  But these are very long term plans.  My first step may be to add a third monitor that I already have sitting around in the shack......

Ken - NM9P
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David Warnberg

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Ken.. Running a GeForce GTX 750 Ti here with triple HP 22" monitors.. love all the real-estate to work with..

Good luck

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I vote for Corsair also. As far as graphics cards go, you might want to future proof a little and go with either a Geforce 1060 or a AMD Radeon 480 series. Cost a little more but are fairly high performance cards. Speaking of Corsair, I am also using their Hydro H100i V2 water cooling system and their Carbide Series Air 240 micro ATX case.
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When I received my 6500, I upgraded my Dell desktop video card which had a benchmark under 1000, I needed a 1/2 length card, and did NOT want to upgrade my stock Dell power supply, so after some research for my Dell model, I purchased this:  My reason for selection was Tim's advice on the benchmark grade over a 1000, this card is 3259.  The web site is  has every known video card and its benchmark...   I also run triple monitors with this, it has a number of different output connectors.
R. Linder
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Donald Corrington

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I had a CoolerMaster 500 W supply that generaed s9+5 noise eevey 67 kHz on all bands. I went with a Corsair HX 750. To my amazement, no trace of noise anywhere.
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Brad A. Steffler

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Corsair. I have used Corsairs for my last 4 power supplies for my PC's. Usually I get an 850 to 750 watt supply. All are  efficient, quiet and RF quiet. I buy the HX line supplies.They ar expensive, but are worth every cent in quietness,efficiency and dependability.