Need Power Supply for AMD fx 8120 build.

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dairyman3833

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Oct 5, 2013
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I folks. New to Tom's...
I have a build im working on and my current power supply is not sufficient. I have a AMD fx 8120 8core 3.1 cpu running into an Asus M5A99X EVO R2.0 with 8gb Kingston 1800 ram, 4hd's, 1 2tb nvidia gt620 video card, and a maudio delta 1010 soundcard. Dual screens, 7 usb's in use at all times. I use this computer primarily for recording and mixing sound, in a studio. Now most think that video takes up a bunch of cpu power and all that. While that is true sound is as much or even more so cpu intensive, once we get closer to analog that is. So anyway I run my cpu most times at 95% it's max for mixing and my current psu is only 500watts. So I need an upgrade cause it's making everything too hot and spiking cause it's not getting enough power. What power supply should I go with? Any recommendations would be great.
 
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ko888
For a system using three GeForce GTX 760 graphics cards in 3-way SLI mode NVIDIA specifies a minimum of a 900 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 70 Amps or greater and that has at least six 6-pin PCI Express supplementary power connectors. Some of the GeForce GTX 760 cards have a single 8-pin or two 8-pin or one 6-pin and one 8-pin PCI Express supplementary power connectors.
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hybird9012

hybird9012

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Jan 29, 2013
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If you're concerned about temperature, you should look at that what is causing the high temperatures first before getting a PSU. Is it just your CPU that is getting hot? If so, what are the temps? You may have to reapply thermal paste, check your cable management so that there is good airflow or get a better performing HSF (I personally would get a new HSF and reapply thermal paste). If you don't correct that issue first then getting a new PSU won't help any.

As for your PSU, your 500W should be fine. Your mechanical hard drives tend to pull no more than 8-10W writing and 2-3W reading.. So you have a safe 40W, your graphics card pulls no more than 50W max which will be 100W for two. Your CPU is what draws the most power at 125W. So if you add all of those up you will come out with about 215W. Ram and other peripherals don't pull much power at all so that is negligible.

If you do want to ever upgrade your graphics card to something higher end, then I would recommend a new PSU. If you're worried about stability then you can get a higher quality PSU. What company manufactured your power supply?
 
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dairyman3833

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Oct 5, 2013
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Thanks for the answers y'all. It's a Rosewell 500w psu. Cables are all out of the way zipp tied to outer seams of case. Had a guy come out and take a look at my new build for some of these problems. I thought that maybe I didn't apply cpu fan good enough as well, but he said it was probably fine and that first change power supply. My sound cardj/cpu takes more power than 3 video cards. I know it sounds crazy but it's the truth. To recreate natural analog re verb in a digital domain you would need 4 of my cpu's running in parallel. And that's on 1 track only. Imagine placing that same digital plugin on 80 tracks? Crazy!! Oh and just in case it is confusing, not talking about mp3's cause that is only 5% of total audio, you loose 95% of the sound on mp3's. But yeah it's stock cpu fan. It was running about 120 F. Only when pushed though, and the cpu was spiking like crazy. Was told this could be due to not cool enough, and not enough power as well. I have a Cooler Master with 2x 120mm fans on it, and a clip on fan outside of the case running into the input fan. We tried cooling off the pc for 2 hrs then restarting and still the crazy cpu jumps from start up. No programs running on startup, it's recording only on this computer. After seeing how much power my audio projects take dude man said that since the cpu was cooled from shutdown and immediately did that it was the cpu trying to get more power and the lack of power coming in. Guess he had same problem on a previous build when one of the internet modules for power said that 550watts was good for his computer. Don't know which one he had but pulled up a different on from your link and it said I should be using bare minimum 700watts or 687 actually. Sorry for all the info, just figured I throw it all out there. Thanks for the quick response and I will be getting a new cpu fan, the silver arrow, but wanted to get the psu 1st to check if dude man was correct.
 
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ko888

ko888

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Feb 18, 2009
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For a system using a single GeForce GTX 620 graphics card NVIDIA specifies a minimum of a 350 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 18 Amps or greater.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

What is the Rosewill model number of your 500W PSU? Some of the low end Rosewill models are pieces of trash. The ones with a short warranty is usually a sign.
 
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dairyman3833

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Oct 5, 2013
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Don't know TBH, it's all hooked up to my mixing board so pain to take apart, but I can tell you that it's 6yrs old and on it's second build. Ahh, I get it about the power supply wattage ratings, not fully but same thing applies to audio. Analog stuff should sound like crap cause it's so damn noisy but that noise is what makes it awesome and musical to the ears. Since it's so old I was going to replace anyway, just couldn't at build time, if it is a shitty power supply. So would that wattage still be the same for let's say 3 evga gtx 760 video cards? Also found the site that dude man bro looked up on my psu stuff. Here it is.

http://www.extreme.outervision.com/PSUEngine

 
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ko888

ko888

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Feb 18, 2009
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For a system using three GeForce GTX 760 graphics cards in 3-way SLI mode NVIDIA specifies a minimum of a 900 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 70 Amps or greater and that has at least six 6-pin PCI Express supplementary power connectors. Some of the GeForce GTX 760 cards have a single 8-pin or two 8-pin or one 6-pin and one 8-pin PCI Express supplementary power connectors.
 
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